Class: RuboCop::Cop::Rails::EnumUniqueness

Inherits:
Base
  • Object
show all
Includes:
Duplication
Defined in:
lib/rubocop/cop/rails/enum_uniqueness.rb

Overview

Looks for duplicate values in enum declarations.

Examples:

# bad
enum status: { active: 0, archived: 0 }

# good
enum status: { active: 0, archived: 1 }

# bad
enum status: [:active, :archived, :active]

# good
enum status: [:active, :archived]

Constant Summary collapse

MSG = 
'Duplicate value `%<value>s` found in `%<enum>s` enum declaration.'
RESTRICT_ON_SEND = 
%i[enum].freeze

Instance Method Summary collapse

Instance Method Details

#on_send(node) ⇒ Object 



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# File 'lib/rubocop/cop/rails/enum_uniqueness.rb', line 34

def on_send(node)
  enum?(node) do |pairs|
    pairs.each do |pair|
      enum_values(pair) do |key, args|
        items = args.values

        next unless duplicates?(items)

        consecutive_duplicates(items).each do |item|
          add_offense(item, message: format(MSG, value: item.source, enum: enum_name(key)))
        end
      end
    end
  end
end