Class: RuboCop::Cop::Rails::ReadWriteAttribute

Inherits:
Cop
  • Object
show all
Defined in:
lib/rubocop/cop/rails/read_write_attribute.rb

Overview

This cop checks for the use of the read_attribute or write_attribute methods.

Examples:


# bad
x = read_attribute(:attr)
write_attribute(:attr, val)

# good
x = self[:attr]
self[:attr] = val

Constant Summary collapse

MSG = 
'Prefer `%s` over `%s`.'.freeze

Constants included from Util

Util::ASGN_NODES, Util::BYTE_ORDER_MARK, Util::EQUALS_ASGN_NODES, Util::LITERAL_REGEX, Util::OPERATOR_METHODS, Util::SHORTHAND_ASGN_NODES

Instance Attribute Summary

Attributes inherited from Cop

#config, #corrections, #offenses, #processed_source

Instance Method Summary collapse

Methods inherited from Cop

#add_offense, all, #config_to_allow_offenses, #config_to_allow_offenses=, #cop_config, cop_name, #cop_name, cop_type, #correct, #debug?, #details, #display_cop_names?, #display_style_guide?, #duplicate_location?, #excluded_file?, #extra_details?, #find_location, #highlights, inherited, #initialize, #join_force?, lint?, match?, #messages, non_rails, #parse, qualified_cop_name, #reference_url, #relevant_file?, #style_guide_url, #target_ruby_version

Methods included from 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?, block_length, comment_line?, directions, double_quotes_acceptable?, double_quotes_required?, effective_column, ends_its_line?, escape_string, first_part_of_call_chain, interpret_string_escapes, line_distance, line_range, move_pos, needs_escaping?, numeric_range_size, on_node, operator?, parentheses?, parenthesized_call?, preceed?, range_between, range_with_surrounding_comma, range_with_surrounding_space, same_line?, source_range, strip_quotes, stripped_source_upto, to_string_literal, to_symbol_literal, within_node?

Methods included from PathUtil

absolute?, match_path?, relative_path

Constructor Details

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

Instance Method Details

#autocorrect(node) ⇒ Object 



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# File 'lib/rubocop/cop/rails/read_write_attribute.rb', line 41

def autocorrect(node)
  _receiver, method_name, _body = *node

  case method_name
  when :read_attribute
    replacement = read_attribute_replacement(node)
  when :write_attribute
    replacement = write_attribute_replacement(node)
  end

  ->(corrector) { corrector.replace(node.source_range, replacement) }
end

#message(node) ⇒ Object 



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# File 'lib/rubocop/cop/rails/read_write_attribute.rb', line 31

def message(node)
  _receiver, method_name, *_args = *node

  if method_name == :read_attribute
    format(MSG, 'self[:attr]', 'read_attribute(:attr)')
  else
    format(MSG, 'self[:attr] = val', 'write_attribute(:attr, val)')
  end
end

#on_send(node) ⇒ Object 



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# File 'lib/rubocop/cop/rails/read_write_attribute.rb', line 22

def on_send(node)
  receiver, method_name, *_args = *node
  return if receiver
  return unless [:read_attribute,
                 :write_attribute].include?(method_name)

  add_offense(node, :selector)
end