Class: RuboCop::Cop::Rails::LexicallyScopedActionFilter

Inherits:

Cop

• Object
• Cop
• RuboCop::Cop::Rails::LexicallyScopedActionFilter

Defined in:

lib/rubocop/cop/rails/lexically_scoped_action_filter.rb

Overview

This cop checks that methods specified in the filter’s ‘only` or `except` options are explicitly defined in the controller.

You can specify methods of superclass or methods added by mixins on the filter, but these confuse developers. If you specify methods where are defined on another controller, you should define the filter in that controller.

Examples:

# bad
class LoginController < ApplicationController
  before_action :require_login, only: %i[index settings logout]

  def index
  end
end

# good
class LoginController < ApplicationController
  before_action :require_login, only: %i[index settings logout]

  def index
  end

  def settings
  end

  def logout
  end
end

Constant Summary

MSG =

'%<action>s not explicitly defined on the controller.'.freeze

FILTERS =

%w[
  :after_action
  :append_after_action
  :append_around_action
  :append_before_action
  :around_action
  :before_action
  :prepend_after_action
  :prepend_around_action
  :prepend_before_action
  :skip_after_action
  :skip_around_action
  :skip_before_action
  :skip_action_callback
].freeze

Constants included from Util

Util::ASGN_NODES, Util::BYTE_ORDER_MARK, Util::CONDITIONAL_NODES, Util::EQUALS_ASGN_NODES, Util::LITERAL_REGEX, Util::LOGICAL_OPERATOR_NODES, Util::MODIFIER_NODES, Util::OPERATOR_METHODS, Util::SHORTHAND_ASGN_NODES

Instance Attribute Summary

Attributes inherited from Cop

#config, #corrections, #offenses, #processed_source

Instance Method Summary

• #on_send(node) ⇒ Object

Methods inherited from Cop

#add_offense, all, autocorrect_incompatible_with, badge, #config_to_allow_offenses, #config_to_allow_offenses=, #cop_config, #cop_name, cop_name, #correct, department, #duplicate_location?, #excluded_file?, #find_location, #highlights, inherited, #initialize, #join_force?, lint?, match?, #messages, non_rails, #parse, qualified_cop_name, #relevant_file?, #target_rails_version, #target_ruby_version

Methods included from AST::Sexp

#s

Methods included from NodePattern::Macros

#def_node_matcher, #def_node_search, #node_search, #node_search_all, #node_search_body, #node_search_first

Methods included from AutocorrectLogic

#autocorrect?, #autocorrect_enabled?, #autocorrect_requested?, #support_autocorrect?

Methods included from IgnoredNode

#ignore_node, #ignored_node?, #part_of_ignored_node?

Methods included from Util

begins_its_line?, comment_line?, double_quotes_required?, effective_column, ends_its_line?, escape_string, first_part_of_call_chain, interpret_string_escapes, line_range, needs_escaping?, on_node, operator?, parentheses?, parenthesized_call?, precede?, range_between, range_by_whole_lines, range_with_surrounding_comma, range_with_surrounding_space, same_line?, source_range, strip_quotes, stripped_source_upto, symbol_without_quote?, to_string_literal, to_supported_styles, to_symbol_literal, within_node?

Methods included from PathUtil

absolute?, find_file_upwards, match_path?, pwd, relative_path, reset_pwd, smart_path

Constructor Details

This class inherits a constructor from RuboCop::Cop::Cop

Instance Method Details

#on_send(node) ⇒ Object

# File 'lib/rubocop/cop/rails/lexically_scoped_action_filter.rb', line 66

def on_send(node)
  methods_node = only_or_except_filter_methods(node)
  return unless methods_node

  defined_methods = node.parent.each_child_node(:def).map(&:method_name)
  methods = array_values(methods_node).reject do |method|
    defined_methods.include?(method)
  end

  add_offense(node, message: message(methods)) unless methods.empty?
end