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ece517-p3/expertiza

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app/models/ta.rb

Summary

Maintainability
A
25 mins
Test Coverage

Mass assignment is not restricted using attr_accessible
Open

class Ta < User
Severity: Critical
Found in app/models/ta.rb by brakeman

This warning comes up if a model does not limit what attributes can be set through mass assignment.

In particular, this check looks for attr_accessible inside model definitions. If it is not found, this warning will be issued.

Brakeman also warns on use of attr_protected - especially since it was found to be vulnerable to bypass. Warnings for mass assignment on models using attr_protected will be reported, but at a lower confidence level.

Note that disabling mass assignment globally will suppress these warnings.

Assignment Branch Condition size for get_user_list is too high. [15.65/15]
Open

  def self.get_user_list(user)
    courses = Ta.get_mapped_courses(user.id)
    participants = []
    user_list = []
    courses.each do |course_id|
Severity: Minor
Found in app/models/ta.rb by rubocop

This cop checks that the ABC size of methods is not higher than the configured maximum. The ABC size is based on assignments, branches (method calls), and conditions. See http://c2.com/cgi/wiki?AbcMetric

Method get_user_list has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.
Open

  def self.get_user_list(user)
    courses = Ta.get_mapped_courses(user.id)
    participants = []
    user_list = []
    courses.each do |course_id|
Severity: Minor
Found in app/models/ta.rb - About 25 mins to fix

Cognitive Complexity

Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.

A method's cognitive complexity is based on a few simple rules:

  • Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
  • Code is considered more complex for each "break in the linear flow of the code"
  • Code is considered more complex when "flow breaking structures are nested"

Further reading

Use find_by instead of where.first.
Open

    object_type.where(["id = ? AND (instructor_id = ? OR private = 0)", id, user_id]).first
Severity: Minor
Found in app/models/ta.rb by rubocop

This cop is used to identify usages of where.first and change them to use find_by instead.

Example:

# bad
User.where(name: 'Bruce').first
User.where(name: 'Bruce').take

# good
User.find_by(name: 'Bruce')

Do not prefix reader method names with get_.
Open

  def get_instructor
Severity: Minor
Found in app/models/ta.rb by rubocop

This cop makes sure that accessor methods are named properly.

Example:

# bad
def set_attribute(value)
end

# good
def attribute=(value)
end

# bad
def get_attribute
end

# good
def attribute
end

Do not prefix writer method names with set_.
Open

  def set_instructor(new_assign)
Severity: Minor
Found in app/models/ta.rb by rubocop

This cop makes sure that accessor methods are named properly.

Example:

# bad
def set_attribute(value)
end

# good
def attribute=(value)
end

# bad
def get_attribute
end

# good
def attribute
end

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