CSC/ECE 517 Spring 2019 - Project E1916. Fix Code Climate issues in controllers with names beginning with A through N

Description of the project

Project Team Member

• Shuai Wang (swang28)
• Huan Chang (hchang15)
• Guangyu Yu (gyu22)

Project Task

There is some code smells detected by the code climate. These violate many of the ruby/rails best practices and needs to be rectified.

Our team is to fix all code smells except：

• Assignment Branch Condition size for [method name] is too high
• Perceived complexity for [method name] is too high.
• Cyclomatic complexity for [method name] is too high.
• Method [method name] has a Cognitive Complexity of XX (exceeds 5 allowed). Consider refactoring.
• File [file name] has XXX lines of code (exceeds 250 allowed). Consider refactoring.
• Class [class name] has XX methods (exceeds 20 allowed). Consider refactoring.
• Method [method name] has XX lines of code (exceeds 25 allowed). Consider refactoring.
• Mass assignment is not restricted using attr_accessible.
• Potentially dangerous attribute available for mass assignment.

Files modified in the project

In all files in app/controllers/ with names beginning with A through N, except assignment_controller.rb.

Main issue files:

• app/controllers/assessment360_controller.rb. MAINTAINABILITY C
• app/controllers/automated_metareviews_controller.rb MAINTAINABILITY B
• app/controllers/grades_controller.rb MAINTAINABILITY B
• app/controllers/impersonate_controller.rb MAINTAINABILITY C
• app/controllers/import_file_controller.rb MAINTAINABILITY f
• app/controllers/lottery_controller.rb MAINTAINABILITY C

Typical Issues and Improvements

Issue: Use a guard clause instead of wrapping the code inside a conditional expression.

Example

    if assignment.try(:is_selfreview_enabled) and unsubmitted_self_review?(participant.try(:id))
      return false
    else
      return true
    end

Solution

    return false if assignment.try(:is_selfreview_enabled) and unsubmitted_self_review?(participant.try(:id))
    true