Mass assignment is not restricted using attr_accessible Open
class Question < ActiveRecord::Base
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- Exclude checks
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 import is too high. [43.23/15] Open
def self.import(row, _row_header, session, _id = nil)
if row.length != 5
raise ArgumentError, "Not enough items: expect 3 columns: your login name, your full name (first and last name, not seperated with the delimiter), and your email."
end
questionnaire = Questionnaire.find_by_id(_id)
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- Exclude checks
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 import
has 34 lines of code (exceeds 25 allowed). Consider refactoring. Open
def self.import(row, _row_header, session, _id = nil)
if row.length != 5
raise ArgumentError, "Not enough items: expect 3 columns: your login name, your full name (first and last name, not seperated with the delimiter), and your email."
end
questionnaire = Questionnaire.find_by_id(_id)
Method import
has a Cognitive Complexity of 8 (exceeds 5 allowed). Consider refactoring. Open
def self.import(row, _row_header, session, _id = nil)
if row.length != 5
raise ArgumentError, "Not enough items: expect 3 columns: your login name, your full name (first and last name, not seperated with the delimiter), and your email."
end
questionnaire = Questionnaire.find_by_id(_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
Use find_by
instead of dynamic find_by_id
. Open
questionnaire = Questionnaire.find_by_id(_id)
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- Exclude checks
This cop checks dynamic find_by_*
methods.
Use find_by
instead of dynamic method.
See. https://github.com/bbatsov/rails-style-guide#find_by
Example:
# bad
User.find_by_name(name)
# bad
User.find_by_name_and_email(name)
# bad
User.find_by_email!(name)
# good
User.find_by(name: name)
# good
User.find_by(name: name, email: email)
# good
User.find_by!(email: email)
Use find_by
instead of dynamic find_by_id
. Open
question = Question.find_by_id(qid)
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- Exclude checks
This cop checks dynamic find_by_*
methods.
Use find_by
instead of dynamic method.
See. https://github.com/bbatsov/rails-style-guide#find_by
Example:
# bad
User.find_by_name(name)
# bad
User.find_by_name_and_email(name)
# bad
User.find_by_email!(name)
# good
User.find_by(name: name)
# good
User.find_by(name: name, email: email)
# good
User.find_by!(email: email)
Specify a :dependent
option. Open
has_many :signup_choices # ?? this may reference signup type questionnaires
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- Exclude checks
This cop looks for has_many
or has_one
associations that don't
specify a :dependent
option.
It doesn't register an offense if :through
option was specified.
Example:
# bad
class User < ActiveRecord::Base
has_many :comments
has_one :avatar
end
# good
class User < ActiveRecord::Base
has_many :comments, dependent: :restrict_with_exception
has_one :avatar, dependent: :destroy
has_many :patients, through: :appointments
end
Do not use prefix _
for a variable that is used. Open
def self.import(row, _row_header, session, _id = nil)
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- Exclude checks
This cop checks for underscore-prefixed variables that are actually used.
Example:
# bad
[1, 2, 3].each do |_num|
do_something(_num)
end
Example:
# good
[1, 2, 3].each do |num|
do_something(num)
end
Example:
# good
[1, 2, 3].each do |_num|
do_something # not using `_num`
end
Use a guard clause instead of wrapping the code inside a conditional expression. Open
if questionnaire.nil?
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- Exclude checks
Use a guard clause instead of wrapping the code inside a conditional expression
Example:
# bad
def test
if something
work
end
end
# good
def test
return unless something
work
end
# also good
def test
work if something
end
# bad
if something
raise 'exception'
else
ok
end
# good
raise 'exception' if something
ok
Surrounding space missing for operator =
. Open
question.questionnaire_id=_id
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- Exclude checks
Checks that operators have space around them, except for ** which should not have surrounding space.
Example:
# bad
total = 3*4
"apple"+"juice"
my_number = 38/4
a ** b
# good
total = 3 * 4
"apple" + "juice"
my_number = 38 / 4
a**b
Do not prefix reader method names with get_
. Open
def get_formatted_question_type
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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
Use a guard clause instead of wrapping the code inside a conditional expression. Open
if type == 'TrueFalse'
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- Exclude checks
Use a guard clause instead of wrapping the code inside a conditional expression
Example:
# bad
def test
if something
work
end
end
# good
def test
return unless something
work
end
# also good
def test
work if something
end
# bad
if something
raise 'exception'
else
ok
end
# good
raise 'exception' if something
ok
Missing space after #
. Open
#attributes["break_before"] = row[4].strip
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- Exclude checks
This cop checks whether comments have a leading space after the
#
denoting the start of the comment. The leading space is not
required for some RDoc special syntax, like #++
, #--
,
#:nodoc
, =begin
- and =end
comments, "shebang" directives,
or rackup options.
Example:
# bad
#Some comment
# good
# Some comment
Line is too long. [169/160] Open
raise ArgumentError, "Not enough items: expect 3 columns: your login name, your full name (first and last name, not seperated with the delimiter), and your email."
- Exclude checks
Surrounding space missing for operator =
. Open
question.questionnaire_id=_id
- Read upRead up
- Exclude checks
Checks that operators have space around them, except for ** which should not have surrounding space.
Example:
# bad
total = 3*4
"apple"+"juice"
my_number = 38/4
a ** b
# good
total = 3 * 4
"apple" + "juice"
my_number = 38 / 4
a**b
Unused method argument - session
. If it's necessary, use _
or _session
as an argument name to indicate that it won't be used. Open
def self.import(row, _row_header, session, _id = nil)
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- Exclude checks
This cop checks for unused method arguments.
Example:
# bad
def some_method(used, unused, _unused_but_allowed)
puts used
end
Example:
# good
def some_method(used, _unused, _unused_but_allowed)
puts used
end
Prefer each
over for
. Open
for q in questions
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- Exclude checks
This cop looks for uses of the for keyword, or each method. The preferred alternative is set in the EnforcedStyle configuration parameter. An each call with a block on a single line is always allowed, however.