Expertiza_Wiki - User contributions [en]

CSC/ECE 517 Fall 2014/ch1a a7 ch

2014-09-15T04:50:10Z

Cthinkel: /* Comparison to other Frameworks */

= Web2py Framework =
Web2py is a free open source full-stack framework for rapid development of fast, scalable, secure and portable database-driven web-based applications written in Python.<sup><span id="1body">[[#1foot|[1]]]</span></sup>
== Background ==
Web2py was originally introduced as a teaching tool to used to demonstrate ease of use and deployment. It was modeled after [http://en.wikipedia.org/wiki/Ruby_on_Rails Ruby on Rails] and [http://en.wikipedia.org/wiki/Django_(web_framework) Django], and as such focuses on rapid development and adheres to the [http://en.wikipedia.org/wiki/Model%E2%80%93view%E2%80%93controller Model View Controller] architecture pattern.

Here are some of the features of Web2py<sup><span id="3body">[[#3foot|[2]]]</span></sup><sup><span id="4body">[[#4foot|[3]]]</span></sup>:
* Web2py runs on Windows, Mac, Unix/Linux, Google App Engine, Amazon EC2, and almost any web hosting via Python 2.5/2.6/2.7/pypy, or Java with Jython.
* Accessible anywhere, without any installation required
* Open source licensed under the [http://www.gnu.org/licenses/lgpl.html GNU LGPL v3.0 License]
* Support for mutiple databases including: SQLite, PostgreSQL, MySQL, MSSQL, FireBird, Oracle, IBM DB2, Informix, Ingres, and Google App Engine
* Equipped with a Data Abstraction Layer that removes the requirement of knowing how to write SQL by doing it for you in real-time
* Role-based authorization of resources
* Error logging and ticketing system
* An web-based administrative interface for ease of interaction

== Examples ==
There are [http://web2py.com/poweredby several websites] currently powered by Web2py, including a [http://pymines.appspot.com/ website] hosting the ever-popular game [http://en.wikipedia.org/wiki/Minesweeper_(video_game) Minesweeper].

As previously mentioned, Web2py doesn't require that you install anything, you may access and demo the capabilities online through their [http://www.web2py.com/demo_admin/default/site demo administrative interface]. At the time of this article's writing, the save demo is not fully-functional.

You may download and run web2py by following the instructions on [http://www.web2py.com/init/default/download this page].

===Code Examples===

A complete list web2py-provided examples can be found [http://www.web2py.com/init/default/examples here].

====Hello World====
Creating a web2py application can be as simple as writing a few lines in a single controller file (default.py):

<pre>
def index(): return "Hello World"
</pre>

====File Upload<sup><span id="3body">[[#3foot|[3]]]</span></sup>====
In the Model:
<pre>
db=DAL('sqlite://storage.db')
db.define_table('image',
Field('name', notnull=True),
Field('file','upload'))
</pre>

In the Controller:
<pre>
def index():
form = SQLFORM(db.image).process()
if form.accepted:
response.flash = 'image uploaded'
return locals()
</pre>

In the View:
<pre>
{{extend 'layout.html'}}
<h1>Image upload form</h1>
{{=form}}
</pre>

[[File:ImageUpload.PNG]]

====Forms<sup><span id="5body">[[#5foot|[5]]]</span></sup>====

In the Model:
<pre>
db = DAL('sqlite://webform.sqlite')
db.define_table('register',
Field('first_name', requires=IS_NOT_EMPTY()),
Field('last_name', requires=IS_NOT_EMPTY()),
Field('email', requires=IS_NOT_EMPTY()))
</pre>

In the Controller:
<pre>
def display_your_form():
form = SQLFORM(db.register)
return dict(form=form)
</pre>

In the View:
<pre>
<center>
<br /><br /><br />
<h1>Web Form</h1>
<br />
<h2>Inputs:</h2>
{{=form}}
<h2>Submitted variables:</h2>
{{=BEAUTIFY(request.vars)}}
</center>
</pre>

[[File:Webform.png]]

==Architecture==

Web2py follows a Model-View-Controller (MVC) architecture.

* '''Model''' - The data
* '''View''' - Presents the data in a user-friendly way.
* '''Controller''' - Acts as the glue between the model and view and handles the logic for displaying the data.

[[File:MVC-Process.png]]

This diagram shows an example of how web2py handles requests and renders the request to the browser:

[[File:Architecture.PNG]]

==Comparison to other Frameworks==
Since web2py was inspiried by Rails and Django, it draws ideas from each.

The creators of web2py borrowed the Ruby on Rails approach of convention over configuration and Django's approach of generating forms from database tables and including a large amount of validators out of the box.
===<u>Controllers</u>===

====Ruby on Rails====
<pre>
class MyTestController < ApplicationController
def index
render_text “Hello World”
end
end
</pre>

====Django====

Django requires the user to specify all of his/her imports in the code:

<pre>
from django.http import HttpResponse
def index(request):
return HttpResponse("Hello World”)
</pre>

====Web2py====
<pre>
def index():
return "Hello World"
</pre>

===<u>Models</u>===

====Ruby on Rails====
<pre>
class Article < ActiveRecord::Migration
def self.up
create_table :articles do |t|
t.column :name, :string
t.column :description, :text
end
end
end
</pre>

====Django====
<pre>
class Article(models.Model):
name = models.StringField()
description = models.TextField()
</pre>

====Web2py====
<pre>
Article=db.define_table(‘Article’,
SQLField(‘email’,’string’),
SQLField(‘description’,’text’)
</pre>

===<u>Views</u>===

====Ruby on Rails====
<pre>
<table>
<% @recipes.each do |recipe| %>
<tr>
<td><%= recipe.name %></td>
</tr>
<% end %>
</table>
</pre>

====Django====
<pre>
<table>
{% for recipe in recipes %}
<tr>
<td>{{recipe.name}}</td>
</tr>
{% endfor %}
</table>
</pre>

====Web2py====
<pre>
<table>
{{for recipe in recipes:}}>
<tr>
<td>{{=recipe.name}}</td>
</tr>
{{pass}}
</table>
</pre>

== References ==
<span id="1foot">[[#1body|1.]]</span> http://www.web2py.com/init/default/index <br>
<span id="2foot">[[#2body|2.]]</span> http://en.wikipedia.org/wiki/Web2py <br>
<span id="3foot">[[#3body|3.]]</span> http://www.web2py.com/init/default/what <br>
<span id="4foot">[[#4body|4.]]</span> http://wiki.expertiza.ncsu.edu/index.php/CSC/ECE_517_Fall_2013/oss_SocialMediaFeeds <br>
<span id="5foot">[[#5body|5.]]</span> http://mherman.org/blog/2012/12/01/crash-course-in-web2py-part-2-web-forms/#.VBT9d_ldVuJ <br>
<span id="6foot">[[#6body|6.]]</span> http://www.web2py.com/examples/static/web2py_vs_others.pdf/ Web2py vs other frameworks <br>

CSC/ECE 517 Fall 2014/ch1a a7 ch

2014-09-15T02:20:36Z

Cthinkel:

= Web2py Framework =
Web2py is a free open source full-stack framework for rapid development of fast, scalable, secure and portable database-driven web-based applications written in Python.<sup><span id="1body">[[#1foot|[1]]]</span></sup>
== Background ==
Web2py was originally introduced as a teaching tool to used to demonstrate ease of use and deployment. It was modeled after [http://en.wikipedia.org/wiki/Ruby_on_Rails Ruby on Rails] and [http://en.wikipedia.org/wiki/Django_(web_framework) Django], and as such focuses on rapid development and adheres to the [http://en.wikipedia.org/wiki/Model%E2%80%93view%E2%80%93controller Model View Controller] architecture pattern.

Here are some of the features of Web2py<sup><span id="3body">[[#3foot|[2]]]</span></sup><sup><span id="4body">[[#4foot|[3]]]</span></sup>:
* Web2py runs on Windows, Mac, Unix/Linux, Google App Engine, Amazon EC2, and almost any web hosting via Python 2.5/2.6/2.7/pypy, or Java with Jython.
* Accessible anywhere, without any installation required
* Open source licensed under the [http://www.gnu.org/licenses/lgpl.html GNU LGPL v3.0 License]
* Support for mutiple databases including: SQLite, PostgreSQL, MySQL, MSSQL, FireBird, Oracle, IBM DB2, Informix, Ingres, and Google App Engine
* Equipped with a Data Abstraction Layer that removes the requirement of knowing how to write SQL by doing it for you in real-time
* Role-based authorization of resources
* Error logging and ticketing system
* An web-based administrative interface for ease of interaction

== Examples ==
There are [http://web2py.com/poweredby several websites] currently powered by Web2py, including a [http://pymines.appspot.com/ website] hosting the ever-popular game [http://en.wikipedia.org/wiki/Minesweeper_(video_game) Minesweeper].

As previously mentioned, Web2py doesn't require that you install anything, you may access and demo the capabilities online through their [http://www.web2py.com/demo_admin/default/site demo administrative interface]. At the time of this article's writing, the save demo is not fully-functional.

You may download and run web2py by following the instructions on [http://www.web2py.com/init/default/download this page].

===Code Examples===

A complete list web2py-provided examples can be found [http://www.web2py.com/init/default/examples here].

====Hello World====
Creating a web2py application can be as simple as writing a few lines in a single controller file (default.py):

<pre>
def index(): return "Hello World"
</pre>

====File Upload<sup><span id="3body">[[#3foot|[3]]]</span></sup>====
In the Model:
<pre>
db=DAL('sqlite://storage.db')
db.define_table('image',
Field('name', notnull=True),
Field('file','upload'))
</pre>

In the Controller:
<pre>
def index():
form = SQLFORM(db.image).process()
if form.accepted:
response.flash = 'image uploaded'
return locals()
</pre>

In the View:
<pre>
{{extend 'layout.html'}}
<h1>Image upload form</h1>
{{=form}}
</pre>

[[File:ImageUpload.PNG]]

====Forms<sup><span id="5body">[[#5foot|[5]]]</span></sup>====

In the Model:
<pre>
db = DAL('sqlite://webform.sqlite')
db.define_table('register',
Field('first_name', requires=IS_NOT_EMPTY()),
Field('last_name', requires=IS_NOT_EMPTY()),
Field('email', requires=IS_NOT_EMPTY()))
</pre>

In the Controller:
<pre>
def display_your_form():
form = SQLFORM(db.register)
return dict(form=form)
</pre>

In the View:
<pre>
<center>
<br /><br /><br />
<h1>Web Form</h1>
<br />
<h2>Inputs:</h2>
{{=form}}
<h2>Submitted variables:</h2>
{{=BEAUTIFY(request.vars)}}
</center>
</pre>

[[File:Webform.png]]

==Architecture==

Web2py follows a Model-View-Controller (MVC) architecture.

* '''Model''' - The data
* '''View''' - Presents the data in a user-friendly way.
* '''Controller''' - Acts as the glue between the model and view and handles the logic for displaying the data.

[[File:MVC-Process.png]]

This diagram shows an example of how web2py handles requests and renders the request to the browser:

[[File:Architecture.PNG]]

==Comparison to other Frameworks==
Since web2py was inspiried by Rails and Django, it draws ideas from each.

===<u>Controllers</u>===

====Ruby on Rails====
<pre>
class MyTestController < ApplicationController
def index
render_text “Hello World”
end
end
</pre>

====Django====

Django requires the user to specify all of his/her imports in the code:

<pre>
from django.http import HttpResponse
def index(request):
return HttpResponse("Hello World”)
</pre>

====Web2py====
<pre>
def index():
return "Hello World"
</pre>

===<u>Models</u>===

====Ruby on Rails====
<pre>
class Article < ActiveRecord::Migration
def self.up
create_table :articles do |t|
t.column :name, :string
t.column :description, :text
end
end
end
</pre>

====Django====
<pre>
class Article(models.Model):
name = models.StringField()
description = models.TextField()
</pre>

====Web2py====
<pre>
Article=db.define_table(‘Article’,
SQLField(‘email’,’string’),
SQLField(‘description’,’text’)
</pre>

===<u>Views</u>===

====Ruby on Rails====
<pre>
<table>
<% @recipes.each do |recipe| %>
<tr>
<td><%= recipe.name %></td>
</tr>
<% end %>
</table>
</pre>

====Django====
<pre>
<table>
{% for recipe in recipes %}
<tr>
<td>{{recipe.name}}</td>
</tr>
{% endfor %}
</table>
</pre>

====Web2py====
<pre>
<table>
{{for recipe in recipes:}}>
<tr>
<td>{{=recipe.name}}</td>
</tr>
{{pass}}
</table>
</pre>

== References ==
<span id="1foot">[[#1body|1.]]</span> http://www.web2py.com/init/default/index <br>
<span id="2foot">[[#2body|2.]]</span> http://en.wikipedia.org/wiki/Web2py <br>
<span id="3foot">[[#3body|3.]]</span> http://www.web2py.com/init/default/what <br>
<span id="4foot">[[#4body|4.]]</span> http://wiki.expertiza.ncsu.edu/index.php/CSC/ECE_517_Fall_2013/oss_SocialMediaFeeds <br>
<span id="5foot">[[#5body|5.]]</span> http://mherman.org/blog/2012/12/01/crash-course-in-web2py-part-2-web-forms/#.VBT9d_ldVuJ <br>
<span id="6foot">[[#6body|6.]]</span> http://www.web2py.com/examples/static/web2py_vs_others.pdf/ Web2py vs other frameworks <br>

CSC/ECE 517 Fall 2014/ch1a a7 ch

2014-09-15T02:17:26Z

Cthinkel: /* Django */

= Web2py Framework =
Web2py is a free open source full-stack framework for rapid development of fast, scalable, secure and portable database-driven web-based applications written in Python.<sup><span id="1body">[[#1foot|[1]]]</span></sup>
== Background ==
Web2py was originally introduced as a teaching tool to used to demonstrate ease of use and deployment. It was modeled after [http://en.wikipedia.org/wiki/Ruby_on_Rails Ruby on Rails] and [http://en.wikipedia.org/wiki/Django_(web_framework) Django], and as such focuses on rapid development and adheres to the [http://en.wikipedia.org/wiki/Model%E2%80%93view%E2%80%93controller Model View Controller] architecture pattern.

Here are some of the features of Web2py<sup><span id="3body">[[#3foot|[2]]]</span></sup><sup><span id="4body">[[#4foot|[3]]]</span></sup>:
* Web2py runs on Windows, Mac, Unix/Linux, Google App Engine, Amazon EC2, and almost any web hosting via Python 2.5/2.6/2.7/pypy, or Java with Jython.
* Accessible anywhere, without any installation required
* Open source licensed under the [http://www.gnu.org/licenses/lgpl.html GNU LGPL v3.0 License]
* Support for mutiple databases including: SQLite, PostgreSQL, MySQL, MSSQL, FireBird, Oracle, IBM DB2, Informix, Ingres, and Google App Engine
* Equipped with a Data Abstraction Layer that removes the requirement of knowing how to write SQL by doing it for you in real-time
* Role-based authorization of resources
* Error logging and ticketing system
* An web-based administrative interface for ease of interaction

== Examples ==
There are [http://web2py.com/poweredby several websites] currently powered by Web2py, including a [http://pymines.appspot.com/ website] hosting the ever-popular game [http://en.wikipedia.org/wiki/Minesweeper_(video_game) Minesweeper].

As previously mentioned, Web2py doesn't require that you install anything, you may access and demo the capabilities online through their [http://www.web2py.com/demo_admin/default/site demo administrative interface]. At the time of this article's writing, the save demo is not fully-functional.

You may download and run web2py by following the instructions on [http://www.web2py.com/init/default/download this page].

===Code Examples===

A complete list web2py-provided examples can be found [http://www.web2py.com/init/default/examples here].

====Hello World====
Creating a web2py application can be as simple as writing a few lines in a single controller file (default.py):

<pre>
def index(): return "Hello World"
</pre>

====File Upload<sup><span id="3body">[[#3foot|[3]]]</span></sup>====
In the Model:
<pre>
db=DAL('sqlite://storage.db')
db.define_table('image',
Field('name', notnull=True),
Field('file','upload'))
</pre>

In the Controller:
<pre>
def index():
form = SQLFORM(db.image).process()
if form.accepted:
response.flash = 'image uploaded'
return locals()
</pre>

In the View:
<pre>
{{extend 'layout.html'}}
<h1>Image upload form</h1>
{{=form}}
</pre>

[[File:ImageUpload.PNG]]

====Forms<sup><span id="5body">[[#5foot|[5]]]</span></sup>====

In the Model:
<pre>
db = DAL('sqlite://webform.sqlite')
db.define_table('register',
Field('first_name', requires=IS_NOT_EMPTY()),
Field('last_name', requires=IS_NOT_EMPTY()),
Field('email', requires=IS_NOT_EMPTY()))
</pre>

In the Controller:
<pre>
def display_your_form():
form = SQLFORM(db.register)
return dict(form=form)
</pre>

In the View:
<pre>
<center>
<br /><br /><br />
<h1>Web Form</h1>
<br />
<h2>Inputs:</h2>
{{=form}}
<h2>Submitted variables:</h2>
{{=BEAUTIFY(request.vars)}}
</center>
</pre>

[[File:Webform.png]]

== Narration ==
===Architecture===

Web2py follows a Model-View-Controller (MVC) architecture.

* '''Model''' - The data
* '''View''' - Presents the data in a user-friendly way.
* '''Controller''' - Acts as the glue between the model and view and handles the logic for displaying the data.

[[File:MVC-Process.png]]

This diagram shows an example of how web2py handles requests and renders the request to the browser:

[[File:Architecture.PNG]]

===Comparison to other Frameworks===
Since web2py was inspiried by Rails and Django, it draws ideas from each.

====<u>Controllers</u>====

=====Ruby on Rails=====
<pre>
class MyTestController < ApplicationController
def index
render_text “Hello World”
end
end
</pre>

=====Django=====

Django requires the user to specify all of his/her imports in the code:

<pre>
from django.http import HttpResponse
def index(request):
return HttpResponse("Hello World”)
</pre>

=====Web2py=====
<pre>
def index():
return "Hello World"
</pre>

====<u>Models</u>====

=====Ruby on Rails=====
<pre>
class Article < ActiveRecord::Migration
def self.up
create_table :articles do |t|
t.column :name, :string
t.column :description, :text
end
end
end
</pre>

=====Django=====
<pre>
class Article(models.Model):
name = models.StringField()
description = models.TextField()
</pre>

=====Web2py=====
<pre>
Article=db.define_table(‘Article’,
SQLField(‘email’,’string’),
SQLField(‘description’,’text’)
</pre>

====<u>Views</u>====

=====Ruby on Rails=====
<pre>
<table>
<% @recipes.each do |recipe| %>
<tr>
<td><%= recipe.name %></td>
</tr>
<% end %>
</table>
</pre>

=====Django=====
<pre>
<table>
{% for recipe in recipes %}
<tr>
<td>{{recipe.name}}</td>
</tr>
{% endfor %}
</table>
</pre>

=====Web2py=====
<pre>
<table>
{{for recipe in recipes:}}>
<tr>
<td>{{=recipe.name}}</td>
</tr>
{{pass}}
</table>
</pre>

== References ==
<span id="1foot">[[#1body|1.]]</span> http://www.web2py.com/init/default/index <br>
<span id="2foot">[[#2body|2.]]</span> http://en.wikipedia.org/wiki/Web2py <br>
<span id="3foot">[[#3body|3.]]</span> http://www.web2py.com/init/default/what <br>
<span id="4foot">[[#4body|4.]]</span> http://wiki.expertiza.ncsu.edu/index.php/CSC/ECE_517_Fall_2013/oss_SocialMediaFeeds <br>
<span id="5foot">[[#5body|5.]]</span> http://mherman.org/blog/2012/12/01/crash-course-in-web2py-part-2-web-forms/#.VBT9d_ldVuJ <br>
<span id="6foot">[[#6body|6.]]</span> http://www.web2py.com/examples/static/web2py_vs_others.pdf/ Web2py vs other frameworks <br>

CSC/ECE 517 Fall 2014/ch1a a7 ch

2014-09-15T02:16:13Z

Cthinkel: /* Comparison to other Frameworks */

= Web2py Framework =
Web2py is a free open source full-stack framework for rapid development of fast, scalable, secure and portable database-driven web-based applications written in Python.<sup><span id="1body">[[#1foot|[1]]]</span></sup>
== Background ==
Web2py was originally introduced as a teaching tool to used to demonstrate ease of use and deployment. It was modeled after [http://en.wikipedia.org/wiki/Ruby_on_Rails Ruby on Rails] and [http://en.wikipedia.org/wiki/Django_(web_framework) Django], and as such focuses on rapid development and adheres to the [http://en.wikipedia.org/wiki/Model%E2%80%93view%E2%80%93controller Model View Controller] architecture pattern.

Here are some of the features of Web2py<sup><span id="3body">[[#3foot|[2]]]</span></sup><sup><span id="4body">[[#4foot|[3]]]</span></sup>:
* Web2py runs on Windows, Mac, Unix/Linux, Google App Engine, Amazon EC2, and almost any web hosting via Python 2.5/2.6/2.7/pypy, or Java with Jython.
* Accessible anywhere, without any installation required
* Open source licensed under the [http://www.gnu.org/licenses/lgpl.html GNU LGPL v3.0 License]
* Support for mutiple databases including: SQLite, PostgreSQL, MySQL, MSSQL, FireBird, Oracle, IBM DB2, Informix, Ingres, and Google App Engine
* Equipped with a Data Abstraction Layer that removes the requirement of knowing how to write SQL by doing it for you in real-time
* Role-based authorization of resources
* Error logging and ticketing system
* An web-based administrative interface for ease of interaction

== Examples ==
There are [http://web2py.com/poweredby several websites] currently powered by Web2py, including a [http://pymines.appspot.com/ website] hosting the ever-popular game [http://en.wikipedia.org/wiki/Minesweeper_(video_game) Minesweeper].

As previously mentioned, Web2py doesn't require that you install anything, you may access and demo the capabilities online through their [http://www.web2py.com/demo_admin/default/site demo administrative interface]. At the time of this article's writing, the save demo is not fully-functional.

You may download and run web2py by following the instructions on [http://www.web2py.com/init/default/download this page].

===Code Examples===

A complete list web2py-provided examples can be found [http://www.web2py.com/init/default/examples here].

====Hello World====
Creating a web2py application can be as simple as writing a few lines in a single controller file (default.py):

<pre>
def index(): return "Hello World"
</pre>

====File Upload<sup><span id="3body">[[#3foot|[3]]]</span></sup>====
In the Model:
<pre>
db=DAL('sqlite://storage.db')
db.define_table('image',
Field('name', notnull=True),
Field('file','upload'))
</pre>

In the Controller:
<pre>
def index():
form = SQLFORM(db.image).process()
if form.accepted:
response.flash = 'image uploaded'
return locals()
</pre>

In the View:
<pre>
{{extend 'layout.html'}}
<h1>Image upload form</h1>
{{=form}}
</pre>

[[File:ImageUpload.PNG]]

====Forms<sup><span id="5body">[[#5foot|[5]]]</span></sup>====

In the Model:
<pre>
db = DAL('sqlite://webform.sqlite')
db.define_table('register',
Field('first_name', requires=IS_NOT_EMPTY()),
Field('last_name', requires=IS_NOT_EMPTY()),
Field('email', requires=IS_NOT_EMPTY()))
</pre>

In the Controller:
<pre>
def display_your_form():
form = SQLFORM(db.register)
return dict(form=form)
</pre>

In the View:
<pre>
<center>
<br /><br /><br />
<h1>Web Form</h1>
<br />
<h2>Inputs:</h2>
{{=form}}
<h2>Submitted variables:</h2>
{{=BEAUTIFY(request.vars)}}
</center>
</pre>

[[File:Webform.png]]

== Narration ==
===Architecture===

Web2py follows a Model-View-Controller (MVC) architecture.

* '''Model''' - The data
* '''View''' - Presents the data in a user-friendly way.
* '''Controller''' - Acts as the glue between the model and view and handles the logic for displaying the data.

[[File:MVC-Process.png]]

This diagram shows an example of how web2py handles requests and renders the request to the browser:

[[File:Architecture.PNG]]

===Comparison to other Frameworks===
Since web2py was inspiried by Rails and Django, it draws ideas from each.

====<u>Controllers</u>====

=====Ruby on Rails=====
<pre>
class MyTestController < ApplicationController
def index
render_text “Hello World”
end
end
</pre>

=====Django=====
<pre>
from django.http import HttpResponse
def index(request):
return HttpResponse("Hello World”)
</pre>
=====Web2py=====
<pre>
def index():
return "Hello World"
</pre>

====<u>Models</u>====

=====Ruby on Rails=====
<pre>
class Article < ActiveRecord::Migration
def self.up
create_table :articles do |t|
t.column :name, :string
t.column :description, :text
end
end
end
</pre>

=====Django=====
<pre>
class Article(models.Model):
name = models.StringField()
description = models.TextField()
</pre>

=====Web2py=====
<pre>
Article=db.define_table(‘Article’,
SQLField(‘email’,’string’),
SQLField(‘description’,’text’)
</pre>

====<u>Views</u>====

=====Ruby on Rails=====
<pre>
<table>
<% @recipes.each do |recipe| %>
<tr>
<td><%= recipe.name %></td>
</tr>
<% end %>
</table>
</pre>

=====Django=====
<pre>
<table>
{% for recipe in recipes %}
<tr>
<td>{{recipe.name}}</td>
</tr>
{% endfor %}
</table>
</pre>

=====Web2py=====
<pre>
<table>
{{for recipe in recipes:}}>
<tr>
<td>{{=recipe.name}}</td>
</tr>
{{pass}}
</table>
</pre>

== References ==
<span id="1foot">[[#1body|1.]]</span> http://www.web2py.com/init/default/index <br>
<span id="2foot">[[#2body|2.]]</span> http://en.wikipedia.org/wiki/Web2py <br>
<span id="3foot">[[#3body|3.]]</span> http://www.web2py.com/init/default/what <br>
<span id="4foot">[[#4body|4.]]</span> http://wiki.expertiza.ncsu.edu/index.php/CSC/ECE_517_Fall_2013/oss_SocialMediaFeeds <br>
<span id="5foot">[[#5body|5.]]</span> http://mherman.org/blog/2012/12/01/crash-course-in-web2py-part-2-web-forms/#.VBT9d_ldVuJ <br>
<span id="6foot">[[#6body|6.]]</span> http://www.web2py.com/examples/static/web2py_vs_others.pdf/ Web2py vs other frameworks <br>

CSC/ECE 517 Fall 2014/ch1a a7 ch

2014-09-14T23:23:22Z

Cthinkel: /* Comparison to other Frameworks */

= Web2py Framework =
Web2py is a free open source full-stack framework for rapid development of fast, scalable, secure and portable database-driven web-based applications written in Python.<sup><span id="1body">[[#1foot|[1]]]</span></sup>
== Background ==
Web2py was originally introduced as a teaching tool to used to demonstrate ease of use and deployment. It was modeled after [http://en.wikipedia.org/wiki/Ruby_on_Rails Ruby on Rails] and [http://en.wikipedia.org/wiki/Django_(web_framework) Django], and as such focuses on rapid development and adheres to the [http://en.wikipedia.org/wiki/Model%E2%80%93view%E2%80%93controller Model View Controller] architecture pattern.

Here are some of the features of Web2py<sup><span id="3body">[[#3foot|[2]]]</span></sup><sup><span id="4body">[[#4foot|[3]]]</span></sup>:
* Web2py runs on Windows, Mac, Unix/Linux, Google App Engine, Amazon EC2, and almost any web hosting via Python 2.5/2.6/2.7/pypy, or Java with Jython.
* Accessible anywhere, without any installation required
* Open source licensed under the [http://www.gnu.org/licenses/lgpl.html GNU LGPL v3.0 License]
* Support for mutiple databases including: SQLite, PostgreSQL, MySQL, MSSQL, FireBird, Oracle, IBM DB2, Informix, Ingres, and Google App Engine
* Equipped with a Data Abstraction Layer that removes the requirement of knowing how to write SQL by doing it for you in real-time
* Role-based authorization of resources
* Error logging and ticketing system
* An web-based administrative interface for ease of interaction

== Examples ==
There are [http://web2py.com/poweredby several websites] currently powered by Web2py, including a [http://pymines.appspot.com/ website] hosting the ever-popular game [http://en.wikipedia.org/wiki/Minesweeper_(video_game) Minesweeper].

As previously mentioned, Web2py doesn't require that you install anything, you may access and demo the capabilities online through their [http://www.web2py.com/demo_admin/default/site demo administrative interface]. At the time of this article's writing, the save demo is not fully-functional.

You may download and run web2py by following the instructions on [http://www.web2py.com/init/default/download this page].

===Code Examples===

A complete list web2py-provided examples can be found [http://www.web2py.com/init/default/examples here].

====Hello World====
Creating a web2py application can be as simple as writing a few lines in a single controller file (default.py):

<pre>
def index(): return "Hello World"
</pre>

====File Upload<sup><span id="3body">[[#3foot|[3]]]</span></sup>====
In the Model:
<pre>
db=DAL('sqlite://storage.db')
db.define_table('image',
Field('name', notnull=True),
Field('file','upload'))
</pre>

In the Controller:
<pre>
def index():
form = SQLFORM(db.image).process()
if form.accepted:
response.flash = 'image uploaded'
return locals()
</pre>

In the View:
<pre>
{{extend 'layout.html'}}
<h1>Image upload form</h1>
{{=form}}
</pre>

[[File:ImageUpload.PNG]]

====Forms<sup><span id="5body">[[#5foot|[5]]]</span></sup>====

In the Model:
<pre>
db = DAL('sqlite://webform.sqlite')
db.define_table('register',
Field('first_name', requires=IS_NOT_EMPTY()),
Field('last_name', requires=IS_NOT_EMPTY()),
Field('email', requires=IS_NOT_EMPTY()))
</pre>

In the Controller:
<pre>
def display_your_form():
form = SQLFORM(db.register)
return dict(form=form)
</pre>

In the View:
<pre>
<center>
<br /><br /><br />
<h1>Web Form</h1>
<br />
<h2>Inputs:</h2>
{{=form}}
<h2>Submitted variables:</h2>
{{=BEAUTIFY(request.vars)}}
</center>
</pre>

[[File:Webform.png]]

== Narration ==
===Architecture===

Web2py follows a Model-View-Controller (MVC) architecture.

* '''Model''' - The data
* '''View''' - Presents the data in a user-friendly way.
* '''Controller''' - Acts as the glue between the model and view and handles the logic for displaying the data.

[[File:MVC-Process.png]]

This diagram shows an example of how web2py handles requests and renders the request to the browser:

[[File:Architecture.PNG]]

===Comparison to other Frameworks===
Since web2py was inspiried by Rails and Django, it draws ideas from each.

====<u>Controllers</u>====

=====Ruby on Rails=====

=====Django=====

=====Web2py=====

====<u>Models</u>====

=====Ruby on Rails=====

=====Django=====

=====Web2py=====

====<u>Views</u>====

=====Ruby on Rails=====

=====Django=====

=====Web2py=====

== References ==
<span id="1foot">[[#1body|1.]]</span> http://www.web2py.com/init/default/index <br>
<span id="2foot">[[#2body|2.]]</span> http://en.wikipedia.org/wiki/Web2py <br>
<span id="3foot">[[#3body|3.]]</span> http://www.web2py.com/init/default/what <br>
<span id="4foot">[[#4body|4.]]</span> http://wiki.expertiza.ncsu.edu/index.php/CSC/ECE_517_Fall_2013/oss_SocialMediaFeeds <br>
<span id="5foot">[[#5body|5.]]</span> http://mherman.org/blog/2012/12/01/crash-course-in-web2py-part-2-web-forms/#.VBT9d_ldVuJ <br>
<span id="6foot">[[#6body|6.]]</span> http://www.web2py.com/examples/static/web2py_vs_others.pdf/ Web2py vs other frameworks <br>

CSC/ECE 517 Fall 2014/ch1a a7 ch

2014-09-14T23:22:22Z

Cthinkel: /* Comparison to other Frameworks */

= Web2py Framework =
Web2py is a free open source full-stack framework for rapid development of fast, scalable, secure and portable database-driven web-based applications written in Python.<sup><span id="1body">[[#1foot|[1]]]</span></sup>
== Background ==
Web2py was originally introduced as a teaching tool to used to demonstrate ease of use and deployment. It was modeled after [http://en.wikipedia.org/wiki/Ruby_on_Rails Ruby on Rails] and [http://en.wikipedia.org/wiki/Django_(web_framework) Django], and as such focuses on rapid development and adheres to the [http://en.wikipedia.org/wiki/Model%E2%80%93view%E2%80%93controller Model View Controller] architecture pattern.

Here are some of the features of Web2py<sup><span id="3body">[[#3foot|[2]]]</span></sup><sup><span id="4body">[[#4foot|[3]]]</span></sup>:
* Web2py runs on Windows, Mac, Unix/Linux, Google App Engine, Amazon EC2, and almost any web hosting via Python 2.5/2.6/2.7/pypy, or Java with Jython.
* Accessible anywhere, without any installation required
* Open source licensed under the [http://www.gnu.org/licenses/lgpl.html GNU LGPL v3.0 License]
* Support for mutiple databases including: SQLite, PostgreSQL, MySQL, MSSQL, FireBird, Oracle, IBM DB2, Informix, Ingres, and Google App Engine
* Equipped with a Data Abstraction Layer that removes the requirement of knowing how to write SQL by doing it for you in real-time
* Role-based authorization of resources
* Error logging and ticketing system
* An web-based administrative interface for ease of interaction

== Examples ==
There are [http://web2py.com/poweredby several websites] currently powered by Web2py, including a [http://pymines.appspot.com/ website] hosting the ever-popular game [http://en.wikipedia.org/wiki/Minesweeper_(video_game) Minesweeper].

As previously mentioned, Web2py doesn't require that you install anything, you may access and demo the capabilities online through their [http://www.web2py.com/demo_admin/default/site demo administrative interface]. At the time of this article's writing, the save demo is not fully-functional.

You may download and run web2py by following the instructions on [http://www.web2py.com/init/default/download this page].

===Code Examples===

A complete list web2py-provided examples can be found [http://www.web2py.com/init/default/examples here].

====Hello World====
Creating a web2py application can be as simple as writing a few lines in a single controller file (default.py):

<pre>
def index(): return "Hello World"
</pre>

====File Upload<sup><span id="3body">[[#3foot|[3]]]</span></sup>====
In the Model:
<pre>
db=DAL('sqlite://storage.db')
db.define_table('image',
Field('name', notnull=True),
Field('file','upload'))
</pre>

In the Controller:
<pre>
def index():
form = SQLFORM(db.image).process()
if form.accepted:
response.flash = 'image uploaded'
return locals()
</pre>

In the View:
<pre>
{{extend 'layout.html'}}
<h1>Image upload form</h1>
{{=form}}
</pre>

[[File:ImageUpload.PNG]]

====Forms<sup><span id="5body">[[#5foot|[5]]]</span></sup>====

In the Model:
<pre>
db = DAL('sqlite://webform.sqlite')
db.define_table('register',
Field('first_name', requires=IS_NOT_EMPTY()),
Field('last_name', requires=IS_NOT_EMPTY()),
Field('email', requires=IS_NOT_EMPTY()))
</pre>

In the Controller:
<pre>
def display_your_form():
form = SQLFORM(db.register)
return dict(form=form)
</pre>

In the View:
<pre>
<center>
<br /><br /><br />
<h1>Web Form</h1>
<br />
<h2>Inputs:</h2>
{{=form}}
<h2>Submitted variables:</h2>
{{=BEAUTIFY(request.vars)}}
</center>
</pre>

[[File:Webform.png]]

== Narration ==
===Architecture===

Web2py follows a Model-View-Controller (MVC) architecture.

* '''Model''' - The data
* '''View''' - Presents the data in a user-friendly way.
* '''Controller''' - Acts as the glue between the model and view and handles the logic for displaying the data.

[[File:MVC-Process.png]]

This diagram shows an example of how web2py handles requests and renders the request to the browser:

[[File:Architecture.PNG]]

===Comparison to other Frameworks===
Since web2py was inspiried by Rails and Django, it draws ideas from each.

====Controllers====

=====Ruby on Rails=====

=====Django=====

=====Web2py=====

====Models====

=====Ruby on Rails=====

=====Django=====

=====Web2py=====

====Views====

=====Ruby on Rails=====

=====Django=====

=====Web2py=====

== References ==
<span id="1foot">[[#1body|1.]]</span> http://www.web2py.com/init/default/index <br>
<span id="2foot">[[#2body|2.]]</span> http://en.wikipedia.org/wiki/Web2py <br>
<span id="3foot">[[#3body|3.]]</span> http://www.web2py.com/init/default/what <br>
<span id="4foot">[[#4body|4.]]</span> http://wiki.expertiza.ncsu.edu/index.php/CSC/ECE_517_Fall_2013/oss_SocialMediaFeeds <br>
<span id="5foot">[[#5body|5.]]</span> http://mherman.org/blog/2012/12/01/crash-course-in-web2py-part-2-web-forms/#.VBT9d_ldVuJ <br>
<span id="6foot">[[#6body|6.]]</span> http://www.web2py.com/examples/static/web2py_vs_others.pdf/ Web2py vs other frameworks <br>

CSC/ECE 517 Fall 2014/ch1a a7 ch

2014-09-14T19:55:20Z

Cthinkel: /* Architecture */

= Web2py Framework =
Web2py is a free open source full-stack framework for rapid development of fast, scalable, secure and portable database-driven web-based applications written in Python.<sup><span id="1body">[[#1foot|[1]]]</span></sup>
== Background ==
Web2py was originally introduced as a teaching tool to used to demonstrate ease of use and deployment. It was modeled after [http://en.wikipedia.org/wiki/Ruby_on_Rails Ruby on Rails] and [http://en.wikipedia.org/wiki/Django_(web_framework) Django], and as such focuses on rapid development and adheres to the [http://en.wikipedia.org/wiki/Model%E2%80%93view%E2%80%93controller Model View Controller] architecture pattern.

Here are some of the features of Web2py<sup><span id="3body">[[#3foot|[2]]]</span></sup><sup><span id="4body">[[#4foot|[3]]]</span></sup>:
* Web2py runs on Windows, Mac, Unix/Linux, Google App Engine, Amazon EC2, and almost any web hosting via Python 2.5/2.6/2.7/pypy, or Java with Jython.
* Accessible anywhere, without any installation required
* Open source licensed under the [http://www.gnu.org/licenses/lgpl.html GNU LGPL v3.0 License]
* Support for mutiple databases including: SQLite, PostgreSQL, MySQL, MSSQL, FireBird, Oracle, IBM DB2, Informix, Ingres, and Google App Engine
* Equipped with a Data Abstraction Layer that removes the requirement of knowing how to write SQL by doing it for you in real-time
* Role-based authorization of resources
* Error logging and ticketing system
* An web-based administrative interface for ease of interaction

== Examples ==
There are [http://web2py.com/poweredby several websites] currently powered by Web2py, including a [http://pymines.appspot.com/ website] hosting the ever-popular game [http://en.wikipedia.org/wiki/Minesweeper_(video_game) Minesweeper].

As previously mentioned, Web2py doesn't require that you install anything, you may access and demo the capabilities online through their [http://www.web2py.com/demo_admin/default/site demo administrative interface]. At the time of this article's writing, the save demo is not fully-functional.

You may download and run web2py by following the instructions on [http://www.web2py.com/init/default/download this page].

===Code Examples===

A complete list web2py-provided examples can be found [http://www.web2py.com/init/default/examples here].

====Hello World====
Creating a web2py application can be as simple as writing a few lines in a single controller file (default.py):

<pre>
def index(): return "Hello World"
</pre>

====File Upload<sup><span id="3body">[[#3foot|[3]]]</span></sup>====
In the Model:
<pre>
db=DAL('sqlite://storage.db')
db.define_table('image',
Field('name', notnull=True),
Field('file','upload'))
</pre>

In the Controller:
<pre>
def index():
form = SQLFORM(db.image).process()
if form.accepted:
response.flash = 'image uploaded'
return locals()
</pre>

In the View:
<pre>
{{extend 'layout.html'}}
<h1>Image upload form</h1>
{{=form}}
</pre>

[[File:ImageUpload.PNG]]

====Forms<sup><span id="5body">[[#5foot|[5]]]</span></sup>====

In the Model:
<pre>
db = DAL('sqlite://webform.sqlite')
db.define_table('register',
Field('first_name', requires=IS_NOT_EMPTY()),
Field('last_name', requires=IS_NOT_EMPTY()),
Field('email', requires=IS_NOT_EMPTY()))
</pre>

In the Controller:
<pre>
def display_your_form():
form = SQLFORM(db.register)
return dict(form=form)
</pre>

In the View:
<pre>
<center>
<br /><br /><br />
<h1>Web Form</h1>
<br />
<h2>Inputs:</h2>
{{=form}}
<h2>Submitted variables:</h2>
{{=BEAUTIFY(request.vars)}}
</center>
</pre>

[[File:Webform.png]]

== Narration ==
===Architecture===

Web2py follows a Model-View-Controller (MVC) architecture.

* '''Model''' - The data
* '''View''' - Presents the data in a user-friendly way.
* '''Controller''' - Acts as the glue between the model and view and handles the logic for displaying the data.

[[File:MVC-Process.png]]

This diagram shows an example of how web2py handles requests and renders the request to the browser:

[[File:Architecture.PNG]]

===Comparison to other Frameworks===
Since web2py was inspiried by Rails and Django, it draws similarities from each.

====Ruby on Rails====

====Django====

== References ==
<span id="1foot">[[#1body|1.]]</span> http://www.web2py.com/init/default/index <br>
<span id="2foot">[[#2body|2.]]</span> http://en.wikipedia.org/wiki/Web2py <br>
<span id="3foot">[[#3body|3.]]</span> http://www.web2py.com/init/default/what <br>
<span id="4foot">[[#4body|4.]]</span> http://wiki.expertiza.ncsu.edu/index.php/CSC/ECE_517_Fall_2013/oss_SocialMediaFeeds <br>
<span id="5foot">[[#5body|5.]]</span> http://mherman.org/blog/2012/12/01/crash-course-in-web2py-part-2-web-forms/#.VBT9d_ldVuJ <br>
<span id="6foot">[[#6body|6.]]</span> http://www.web2py.com/examples/static/web2py_vs_others.pdf/ Web2py vs other frameworks <br>

File:Architecture.PNG

2014-09-14T19:49:44Z

Cthinkel:

CSC/ECE 517 Fall 2014/ch1a a7 ch

2014-09-14T05:20:02Z

Cthinkel: /* Comparison to other Frameworks */

= Web2py Framework =
Web2py is a free open source full-stack framework for rapid development of fast, scalable, secure and portable database-driven web-based applications written in Python.<sup><span id="1body">[[#1foot|[1]]]</span></sup>
== Background ==
Web2py was originally introduced as a teaching tool to used to demonstrate ease of use and deployment. It was modeled after [http://en.wikipedia.org/wiki/Ruby_on_Rails Ruby on Rails] and [http://en.wikipedia.org/wiki/Django_(web_framework) Django], and as such focuses on rapid development and adheres to the [http://en.wikipedia.org/wiki/Model%E2%80%93view%E2%80%93controller Model View Controller] architecture pattern.

Here are some of the features of Web2py<sup><span id="3body">[[#3foot|[2]]]</span></sup><sup><span id="4body">[[#4foot|[3]]]</span></sup>:
* Web2py runs on Windows, Mac, Unix/Linux, Google App Engine, Amazon EC2, and almost any web hosting via Python 2.5/2.6/2.7/pypy, or Java with Jython.
* Accessible anywhere, without any installation required
* Open source licensed under the [http://www.gnu.org/licenses/lgpl.html GNU LGPL v3.0 License]
* Support for mutiple databases including: SQLite, PostgreSQL, MySQL, MSSQL, FireBird, Oracle, IBM DB2, Informix, Ingres, and Google App Engine
* Equipped with a Data Abstraction Layer that removes the requirement of knowing how to write SQL by doing it for you in real-time
* Role-based authorization of resources
* Error logging and ticketing system
* An web-based administrative interface for ease of interaction

== Examples ==
There are [http://web2py.com/poweredby several websites] currently powered by Web2py, including a [http://pymines.appspot.com/ website] hosting the ever-popular game [http://en.wikipedia.org/wiki/Minesweeper_(video_game) Minesweeper].

As previously mentioned, Web2py doesn't require that you install anything, you may access and demo the capabilities online through their [http://www.web2py.com/demo_admin/default/site demo administrative interface]. At the time of this article's writing, the save demo is not fully-functional.

You may download and run web2py by following the instructions on [http://www.web2py.com/init/default/download this page].

===Code Examples===

A complete list web2py-provided examples can be found [http://www.web2py.com/init/default/examples here].

====Hello World====
Creating a web2py application can be as simple as writing a few lines in a single controller file (default.py):

<pre>
def index(): return "Hello World"
</pre>

====File Upload<sup><span id="3body">[[#3foot|[3]]]</span></sup>====
In the Model:
<pre>
db=DAL('sqlite://storage.db')
db.define_table('image',
Field('name', notnull=True),
Field('file','upload'))
</pre>

In the Controller:
<pre>
def index():
form = SQLFORM(db.image).process()
if form.accepted:
response.flash = 'image uploaded'
return locals()
</pre>

In the View:
<pre>
{{extend 'layout.html'}}
<h1>Image upload form</h1>
{{=form}}
</pre>

[[File:ImageUpload.PNG]]

====Forms<sup><span id="5body">[[#5foot|[5]]]</span></sup>====

In the Model:
<pre>
db = DAL('sqlite://webform.sqlite')
db.define_table('register',
Field('first_name', requires=IS_NOT_EMPTY()),
Field('last_name', requires=IS_NOT_EMPTY()),
Field('email', requires=IS_NOT_EMPTY()))
</pre>

In the Controller:
<pre>
def display_your_form():
form = SQLFORM(db.register)
return dict(form=form)
</pre>

In the View:
<pre>
<center>
<br /><br /><br />
<h1>Web Form</h1>
<br />
<h2>Inputs:</h2>
{{=form}}
<h2>Submitted variables:</h2>
{{=BEAUTIFY(request.vars)}}
</center>
</pre>

[[File:Webform.png]]

== Narration ==
===Architecture===

Web2py follows a Model-View-Controller (MVC) architecture.

* '''Model''' - The data
* '''View''' - Presents the data in a user-friendly way.
* '''Controller''' - Acts as the glue between the model and view and handles the logic for displaying the data.

[[File:MVC-Process.png]]

===Comparison to other Frameworks===
Since web2py was inspiried by Rails and Django, it draws similarities from each.

====Ruby on Rails====

====Django====

== References ==
<span id="1foot">[[#1body|1.]]</span> http://www.web2py.com/init/default/index <br>
<span id="2foot">[[#2body|2.]]</span> http://en.wikipedia.org/wiki/Web2py <br>
<span id="3foot">[[#3body|3.]]</span> http://www.web2py.com/init/default/what <br>
<span id="4foot">[[#4body|4.]]</span> http://wiki.expertiza.ncsu.edu/index.php/CSC/ECE_517_Fall_2013/oss_SocialMediaFeeds <br>
<span id="5foot">[[#5body|5.]]</span> http://mherman.org/blog/2012/12/01/crash-course-in-web2py-part-2-web-forms/#.VBT9d_ldVuJ <br>
<span id="6foot">[[#6body|6.]]</span> http://www.web2py.com/examples/static/web2py_vs_others.pdf/ Web2py vs other frameworks <br>

CSC/ECE 517 Fall 2014/ch1a a7 ch

2014-09-14T05:09:57Z

Cthinkel:

= Web2py Framework =
Web2py is a free open source full-stack framework for rapid development of fast, scalable, secure and portable database-driven web-based applications written in Python.<sup><span id="1body">[[#1foot|[1]]]</span></sup>
== Background ==
Web2py was originally introduced as a teaching tool to used to demonstrate ease of use and deployment. It was modeled after [http://en.wikipedia.org/wiki/Ruby_on_Rails Ruby on Rails] and [http://en.wikipedia.org/wiki/Django_(web_framework) Django], and as such focuses on rapid development and adheres to the [http://en.wikipedia.org/wiki/Model%E2%80%93view%E2%80%93controller Model View Controller] architecture pattern.

Here are some of the features of Web2py<sup><span id="3body">[[#3foot|[2]]]</span></sup><sup><span id="4body">[[#4foot|[3]]]</span></sup>:
* Web2py runs on Windows, Mac, Unix/Linux, Google App Engine, Amazon EC2, and almost any web hosting via Python 2.5/2.6/2.7/pypy, or Java with Jython.
* Accessible anywhere, without any installation required
* Open source licensed under the [http://www.gnu.org/licenses/lgpl.html GNU LGPL v3.0 License]
* Support for mutiple databases including: SQLite, PostgreSQL, MySQL, MSSQL, FireBird, Oracle, IBM DB2, Informix, Ingres, and Google App Engine
* Equipped with a Data Abstraction Layer that removes the requirement of knowing how to write SQL by doing it for you in real-time
* Role-based authorization of resources
* Error logging and ticketing system
* An web-based administrative interface for ease of interaction

== Examples ==
There are [http://web2py.com/poweredby several websites] currently powered by Web2py, including a [http://pymines.appspot.com/ website] hosting the ever-popular game [http://en.wikipedia.org/wiki/Minesweeper_(video_game) Minesweeper].

As previously mentioned, Web2py doesn't require that you install anything, you may access and demo the capabilities online through their [http://www.web2py.com/demo_admin/default/site demo administrative interface]. At the time of this article's writing, the save demo is not fully-functional.

You may download and run web2py by following the instructions on [http://www.web2py.com/init/default/download this page].

===Code Examples===

A complete list web2py-provided examples can be found [http://www.web2py.com/init/default/examples here].

====Hello World====
Creating a web2py application can be as simple as writing a few lines in a single controller file (default.py):

<pre>
def index(): return "Hello World"
</pre>

====File Upload<sup><span id="3body">[[#3foot|[3]]]</span></sup>====
In the Model:
<pre>
db=DAL('sqlite://storage.db')
db.define_table('image',
Field('name', notnull=True),
Field('file','upload'))
</pre>

In the Controller:
<pre>
def index():
form = SQLFORM(db.image).process()
if form.accepted:
response.flash = 'image uploaded'
return locals()
</pre>

In the View:
<pre>
{{extend 'layout.html'}}
<h1>Image upload form</h1>
{{=form}}
</pre>

[[File:ImageUpload.PNG]]

====Forms<sup><span id="5body">[[#5foot|[5]]]</span></sup>====

In the Model:
<pre>
db = DAL('sqlite://webform.sqlite')
db.define_table('register',
Field('first_name', requires=IS_NOT_EMPTY()),
Field('last_name', requires=IS_NOT_EMPTY()),
Field('email', requires=IS_NOT_EMPTY()))
</pre>

In the Controller:
<pre>
def display_your_form():
form = SQLFORM(db.register)
return dict(form=form)
</pre>

In the View:
<pre>
<center>
<br /><br /><br />
<h1>Web Form</h1>
<br />
<h2>Inputs:</h2>
{{=form}}
<h2>Submitted variables:</h2>
{{=BEAUTIFY(request.vars)}}
</center>
</pre>

[[File:Webform.png]]

== Narration ==
===Architecture===

Web2py follows a Model-View-Controller (MVC) architecture.

* '''Model''' - The data
* '''View''' - Presents the data in a user-friendly way.
* '''Controller''' - Acts as the glue between the model and view and handles the logic for displaying the data.

[[File:MVC-Process.png]]

===Comparison to other Frameworks===

== References ==
<span id="1foot">[[#1body|1.]]</span> http://www.web2py.com/init/default/index <br>
<span id="2foot">[[#2body|2.]]</span> http://en.wikipedia.org/wiki/Web2py <br>
<span id="3foot">[[#3body|3.]]</span> http://www.web2py.com/init/default/what <br>
<span id="4foot">[[#4body|4.]]</span> http://wiki.expertiza.ncsu.edu/index.php/CSC/ECE_517_Fall_2013/oss_SocialMediaFeeds <br>
<span id="5foot">[[#5body|5.]]</span> http://mherman.org/blog/2012/12/01/crash-course-in-web2py-part-2-web-forms/#.VBT9d_ldVuJ <br>
<span id="6foot">[[#6body|6.]]</span> http://www.web2py.com/examples/static/web2py_vs_others.pdf/ Web2py vs other frameworks <br>

CSC/ECE 517 Fall 2014/ch1a a7 ch

2014-09-14T04:59:36Z

Cthinkel: /* Architecture */

= Web2py Framework =
Web2py is a free open source full-stack framework for rapid development of fast, scalable, secure and portable database-driven web-based applications written in Python.<sup><span id="1body">[[#1foot|[1]]]</span></sup>
== Background ==
Web2py was originally introduced as a teaching tool to used to demonstrate ease of use and deployment. It was modeled after [http://en.wikipedia.org/wiki/Ruby_on_Rails Ruby on Rails] and [http://en.wikipedia.org/wiki/Django_(web_framework) Django], and as such focuses on rapid development and adheres to the [http://en.wikipedia.org/wiki/Model%E2%80%93view%E2%80%93controller Model View Controller] architecture pattern.

Here are some of the features of Web2py<sup><span id="3body">[[#3foot|[2]]]</span></sup><sup><span id="4body">[[#4foot|[3]]]</span></sup>:
* Web2py runs on Windows, Mac, Unix/Linux, Google App Engine, Amazon EC2, and almost any web hosting via Python 2.5/2.6/2.7/pypy, or Java with Jython.
* Accessible anywhere, without any installation required
* Open source licensed under the [http://www.gnu.org/licenses/lgpl.html GNU LGPL v3.0 License]
* Support for mutiple databases including: SQLite, PostgreSQL, MySQL, MSSQL, FireBird, Oracle, IBM DB2, Informix, Ingres, and Google App Engine
* Equipped with a Data Abstraction Layer that removes the requirement of knowing how to write SQL by doing it for you in real-time
* Role-based authorization of resources
* Error logging and ticketing system
* An web-based administrative interface for ease of interaction

== Examples ==
There are [http://web2py.com/poweredby several websites] currently powered by Web2py, including a [http://pymines.appspot.com/ website] hosting the ever-popular game [http://en.wikipedia.org/wiki/Minesweeper_(video_game) Minesweeper].

As previously mentioned, Web2py doesn't require that you install anything, you may access and demo the capabilities online through their [http://www.web2py.com/demo_admin/default/site demo administrative interface]. At the time of this article's writing, the save demo is not fully-functional.

You may download and run web2py by following the instructions on [http://www.web2py.com/init/default/download this page].

===Code Examples===

A complete list web2py-provided examples can be found [http://www.web2py.com/init/default/examples here].

====Hello World====
Creating a web2py application can be as simple as writing a few lines in a single controller file (default.py):

<pre>
def index(): return "Hello World"
</pre>

====File Upload<sup><span id="3body">[[#3foot|[3]]]</span></sup>====
In the Model:
<pre>
db=DAL('sqlite://storage.db')
db.define_table('image',
Field('name', notnull=True),
Field('file','upload'))
</pre>

In the Controller:
<pre>
def index():
form = SQLFORM(db.image).process()
if form.accepted:
response.flash = 'image uploaded'
return locals()
</pre>

In the View:
<pre>
{{extend 'layout.html'}}
<h1>Image upload form</h1>
{{=form}}
</pre>

[[File:ImageUpload.PNG]]

====Forms<sup><span id="5body">[[#5foot|[5]]]</span></sup>====

In the Model:
<pre>
db = DAL('sqlite://webform.sqlite')
db.define_table('register',
Field('first_name', requires=IS_NOT_EMPTY()),
Field('last_name', requires=IS_NOT_EMPTY()),
Field('email', requires=IS_NOT_EMPTY()))
</pre>

In the Controller:
<pre>
def display_your_form():
form = SQLFORM(db.register)
return dict(form=form)
</pre>

In the View:
<pre>
<center>
<br /><br /><br />
<h1>Web Form</h1>
<br />
<h2>Inputs:</h2>
{{=form}}
<h2>Submitted variables:</h2>
{{=BEAUTIFY(request.vars)}}
</center>
</pre>

[[File:Webform.png]]

== Narration ==
===Architecture===

Web2py follows a Model-View-Controller (MVC) architecture.

* '''Model''' - The data
* '''View''' - Presents the data in a user-friendly way.
* '''Controller''' - Acts as the glue between the model and view and handles the logic for displaying the data.

[[File:MVC-Process.png]]

===Comparison to other Frameworks===
== Helpful Links ==
[http://www.web2py.com/examples/static/web2py_vs_others.pdf/ Web2py vs other frameworks]
== References ==
<span id="1foot">[[#1body|1.]]</span> http://www.web2py.com/init/default/index <br>
<span id="2foot">[[#2body|2.]]</span> http://en.wikipedia.org/wiki/Web2py <br>
<span id="3foot">[[#3body|3.]]</span> http://www.web2py.com/init/default/what <br>
<span id="4foot">[[#4body|4.]]</span> http://wiki.expertiza.ncsu.edu/index.php/CSC/ECE_517_Fall_2013/oss_SocialMediaFeeds <br>
<span id="5foot">[[#5body|5.]]</span> http://mherman.org/blog/2012/12/01/crash-course-in-web2py-part-2-web-forms/#.VBT9d_ldVuJ <br>

CSC/ECE 517 Fall 2014/ch1a a7 ch

= Web2py Framework =

== Background ==
Web2py is a free open source full-stack framework for rapid development of fast, scalable, secure and portable database-driven web-based applications written in Python.<sup><span id="1body">[[#1foot|[1]]]</span></sup>
== Examples ==
== Narration ==
== Helpful Links ==
[http://www.web2py.com/examples/static/web2py_vs_others.pdf/ Web2py vs other frameworks]
== References ==
<span id="1foot">[[#1body|1.]]</span> http://www.web2py.com/init/default/index <br>

CSC/ECE 517 Fall 2014/ch1a a7 ch

2014-09-13T23:03:12Z

Cthinkel:

= Web2py Framework =

== Background ==
Web2py is a free open source full-stack framework for rapid development of fast, scalable, secure and portable database-driven web-based applications written in Python.<sup><span id="1body">[[#1foot|[1]]]</span></sup>
== Examples ==
== Narration ==
== Helpful Links ==
[http://www.web2py.com/examples/static/web2py_vs_others.pdf/ Web2py vs other frameworks]
== References ==
<span id="7foot">[[#7body|7.]]</span> http://www.web2py.com/init/default/index <br>

CSC/ECE 517 Fall 2014/ch1a a7 ch

2014-09-13T20:04:00Z

Cthinkel:

= Web2py Framework =

== Background ==
== Examples ==
== Narration ==
== Helpful Links ==
[http://www.web2py.com/examples/static/web2py_vs_others.pdf/ Web2py vs other frameworks]
== References ==

CSC/ECE 517 Fall 2014/ch1a a7 ch

2014-09-13T20:03:48Z

Cthinkel:

= Web2py Framework =

== Background ==
== Examples ==
== Narration ==
== Helpful Links ==
[http://www.web2py.com/examples/static/web2py_vs_others.pdf/Q Web2py vs other frameworks]
== References ==