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Contents
# frozen_string_literal: true
module RuboCop
module Cop
module Rails
# This cop checks if the value of the option `class_name`, in
# the definition of a reflection is a string.
#
# @example
# # bad
# has_many :accounts, class_name: Account
# has_many :accounts, class_name: Account.name
#
# # good
# has_many :accounts, class_name: 'Account'
class ReflectionClassName < Cop
MSG = 'Use a string value for `class_name`.'.freeze
def_node_matcher :association_with_options?, <<-PATTERN
(send nil? {:has_many :has_one :belongs_to} _ (hash $...))
PATTERN
def_node_search :reflection_class_name, <<-PATTERN
(pair (sym :class_name) [!str !sym])
PATTERN
def on_send(node)
return unless association_with_options?(node)
reflection_class_name = reflection_class_name(node).first
return unless reflection_class_name
add_offense(node, location: reflection_class_name.loc.expression)
end
end
end
end
end
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