Assignment Branch Condition size for create_layout_file is too high. [24.82/15] Open
def create_layout_file
destination = 'app/views/layouts/application.html.erb'
answer = ask('Replace application.html.erb automatically? [Yn]')
answer_yes = answer.blank? || answer.downcase.starts_with?('y')
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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
Method has too many lines. [15/10] Open
def create_layout_file
destination = 'app/views/layouts/application.html.erb'
answer = ask('Replace application.html.erb automatically? [Yn]')
answer_yes = answer.blank? || answer.downcase.starts_with?('y')
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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.
Extra empty line detected at class body end. Open
end
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This cops checks if empty lines around the bodies of classes match the configuration.
Example: EnforcedStyle: empty_lines
# good
class Foo
def bar
# ...
end
end
Example: EnforcedStyle: emptylinesexcept_namespace
# good
class Foo
class Bar
# ...
end
end
Example: EnforcedStyle: emptylinesspecial
# good
class Foo
def bar; end
end
Example: EnforcedStyle: noemptylines (default)
# good
class Foo
def bar
# ...
end
end
Useless assignment to variable - destination
. Open
destination = 'app/views/layouts/application.html.erb'
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This cop checks for every useless assignment to local variable in every
scope.
The basic idea for this cop was from the warning of ruby -cw
:
assigned but unused variable - foo
Currently this cop has advanced logic that detects unreferenced reassignments and properly handles varied cases such as branch, loop, rescue, ensure, etc.
Example:
# bad
def some_method
some_var = 1
do_something
end
Example:
# good
def some_method
some_var = 1
do_something(some_var)
end
(...)
interpreted as grouped expression. Open
puts ('-' * 100).light_yellow
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Checks for space between the name of a called method and a left parenthesis.
Example:
# bad
puts (x + y)
Example:
# good
puts(x + y)
Use nested module/class definitions instead of compact style. Open
class Hello::InstallGenerator < Rails::Generators::Base
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This cop checks the style of children definitions at classes and modules. Basically there are two different styles:
Example: EnforcedStyle: nested (default)
# good
# have each child on its own line
class Foo
class Bar
end
end
Example: EnforcedStyle: compact
# good
# combine definitions as much as possible
class Foo::Bar
end
The compact style is only forced for classes/modules with one child.
(...)
interpreted as grouped expression. Open
puts ('-' * 100).light_yellow
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Checks for space between the name of a called method and a left parenthesis.
Example:
# bad
puts (x + y)
Example:
# good
puts(x + y)
Missing magic comment # frozen_string_literal: true
. Open
class Hello::InstallGenerator < Rails::Generators::Base
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This cop is designed to help upgrade to Ruby 3.0. It will add the
comment # frozen_string_literal: true
to the top of files to
enable frozen string literals. Frozen string literals may be default
in Ruby 3.0. The comment will be added below a shebang and encoding
comment. The frozen string literal comment is only valid in Ruby 2.3+.
Example: EnforcedStyle: when_needed (default)
# The `when_needed` style will add the frozen string literal comment
# to files only when the `TargetRubyVersion` is set to 2.3+.
# bad
module Foo
# ...
end
# good
# frozen_string_literal: true
module Foo
# ...
end
Example: EnforcedStyle: always
# The `always` style will always add the frozen string literal comment
# to a file, regardless of the Ruby version or if `freeze` or `<<` are
# called on a string literal.
# bad
module Bar
# ...
end
# good
# frozen_string_literal: true
module Bar
# ...
end
Example: EnforcedStyle: never
# The `never` will enforce that the frozen string literal comment does
# not exist in a file.
# bad
# frozen_string_literal: true
module Baz
# ...
end
# good
module Baz
# ...
end
Do not suppress exceptions. Open
rescue Errno::ENOENT
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This cop checks for rescue blocks with no body.
Example:
# bad
def some_method
do_something
rescue
# do nothing
end
Example:
# bad
begin
do_something
rescue
# do nothing
end
Example:
# good
def some_method
do_something
rescue
handle_exception
end
Example:
# good
begin
do_something
rescue
handle_exception
end
(...)
interpreted as grouped expression. Open
puts ('-' * 100).light_yellow
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Checks for space between the name of a called method and a left parenthesis.
Example:
# bad
puts (x + y)
Example:
# good
puts(x + y)