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# frozen_string_literal: true
module RuboCop
module Cop
module Database
# @example
# # bad
# ActiveRecord::Base.connection
#
# # good
# ApplicationRecord.connection
#
class MultipleDatabases < RuboCop::Cop::Cop
AR_BASE_MESSAGE = <<~EOF
Do not use methods from ActiveRecord::Base, use the ApplicationRecord class instead
For fixing offenses related to the ActiveRecord::Base.transaction method, see our guidelines:
https://docs.gitlab.com/ee/development/database/transaction_guidelines.html
EOF
ALLOWED_METHODS = %i[
no_touching
].freeze
def_node_matcher :active_record_base_method_is_used?, <<~PATTERN
(send (const (const nil? :ActiveRecord) :Base) $_)
PATTERN
def on_send(node)
return unless active_record_base_method_is_used?(node)
active_record_base_method = node.children[1]
return if method_is_allowed?(active_record_base_method)
add_offense(node, location: :expression, message: AR_BASE_MESSAGE)
end
private
def method_is_allowed?(method_name)
ALLOWED_METHODS.include?(method_name.to_sym)
end
end
end
end
end
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