Module has too many lines. [119/100] Open
module AuthorizationHelper
# Notes:
# We use session directly instead of current_role_name and the like
# Because helpers do not seem to have access to the methods defined in app/controllers/application_controller.rb
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This cop checks if the length a module exceeds some maximum value. Comment lines can optionally be ignored. The maximum allowed length is configurable.
Assignment Branch Condition size for response_edit_allowed? is too high. [24.78/15] Open
def response_edit_allowed?(map, user_id)
assignment = map.reviewer.assignment
# if it is a review response map, all the members of reviewee team should be able to view the response (can be done from heat map)
if map.is_a? ReviewResponseMap
reviewee_team = AssignmentTeam.find(map.reviewee_id)
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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
Cyclomatic complexity for response_edit_allowed? is too high. [14/6] Open
def response_edit_allowed?(map, user_id)
assignment = map.reviewer.assignment
# if it is a review response map, all the members of reviewee team should be able to view the response (can be done from heat map)
if map.is_a? ReviewResponseMap
reviewee_team = AssignmentTeam.find(map.reviewee_id)
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This cop checks that the cyclomatic complexity of methods is not higher than the configured maximum. The cyclomatic complexity is the number of linearly independent paths through a method. The algorithm counts decision points and adds one.
An if statement (or unless or ?:) increases the complexity by one. An else branch does not, since it doesn't add a decision point. The && operator (or keyword and) can be converted to a nested if statement, and ||/or is shorthand for a sequence of ifs, so they also add one. Loops can be said to have an exit condition, so they add one.
Perceived complexity for response_edit_allowed? is too high. [14/7] Open
def response_edit_allowed?(map, user_id)
assignment = map.reviewer.assignment
# if it is a review response map, all the members of reviewee team should be able to view the response (can be done from heat map)
if map.is_a? ReviewResponseMap
reviewee_team = AssignmentTeam.find(map.reviewee_id)
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This cop tries to produce a complexity score that's a measure of the
complexity the reader experiences when looking at a method. For that
reason it considers when
nodes as something that doesn't add as much
complexity as an if
or a &&
. Except if it's one of those special
case
/when
constructs where there's no expression after case
. Then
the cop treats it as an if
/elsif
/elsif
... and lets all the when
nodes count. In contrast to the CyclomaticComplexity cop, this cop
considers else
nodes as adding complexity.
Example:
def my_method # 1
if cond # 1
case var # 2 (0.8 + 4 * 0.2, rounded)
when 1 then func_one
when 2 then func_two
when 3 then func_three
when 4..10 then func_other
end
else # 1
do_something until a && b # 2
end # ===
end # 7 complexity points
Method has too many lines. [15/10] Open
def response_edit_allowed?(map, user_id)
assignment = map.reviewer.assignment
# if it is a review response map, all the members of reviewee team should be able to view the response (can be done from heat map)
if map.is_a? ReviewResponseMap
reviewee_team = AssignmentTeam.find(map.reviewee_id)
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This cop checks if the length of a method exceeds some maximum value. Comment lines can optionally be ignored. The maximum allowed length is configurable.
Method has too many lines. [12/10] Open
def given_user_can?(user_id, action)
participant = Participant.find_by(id: user_id)
return false if participant.nil?
case action
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This cop checks if the length of a method exceeds some maximum value. Comment lines can optionally be ignored. The maximum allowed length is configurable.
Assignment Branch Condition size for current_user_instructs_assignment? is too high. [16.49/15] Open
def current_user_instructs_assignment?(assignment)
user_logged_in? && !assignment.nil? && (
assignment.instructor_id == session[:user].id ||
(assignment.course_id && Course.find(assignment.course_id).instructor_id == session[:user].id)
)
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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
Consider simplifying this complex logical expression. Open
if map.is_a? ReviewResponseMap
reviewee_team = AssignmentTeam.find(map.reviewee_id)
return user_logged_in? &&
(
current_user_has_id?(user_id) ||
Method response_edit_allowed?
has a Cognitive Complexity of 10 (exceeds 5 allowed). Consider refactoring. Open
def response_edit_allowed?(map, user_id)
assignment = map.reviewer.assignment
# if it is a review response map, all the members of reviewee team should be able to view the response (can be done from heat map)
if map.is_a? ReviewResponseMap
reviewee_team = AssignmentTeam.find(map.reviewee_id)
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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
Align )
with (
. Open
)
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This cops checks the indentation of hanging closing parentheses in
method calls, method definitions, and grouped expressions. A hanging
closing parenthesis means )
preceded by a line break.
Example:
# good: when x is on its own line, indent this way
func(
x,
y
)
# good: when x follows opening parenthesis, align parentheses
a = b * (x +
y
)
# bad
def func(
x,
y
)
end
Missing top-level module documentation comment. Open
module AuthorizationHelper
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This cop checks for missing top-level documentation of classes and modules. Classes with no body are exempt from the check and so are namespace modules - modules that have nothing in their bodies except classes, other modules, or constant definitions.
The documentation requirement is annulled if the class or module has a "#:nodoc:" comment next to it. Likewise, "#:nodoc: all" does the same for all its children.
Example:
# bad
class Person
# ...
end
# good
# Description/Explanation of Person class
class Person
# ...
end