method

check_validity

v3.1.0 - Show latest stable - 0 notes - Class: HasAndBelongsToMany

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What's this?

check_validity(reflection) private

TODO: These checks should probably be moved into the Reflection, and we should not be

redefining the options[:join_table] value - instead we should define a
reflection.join_table method.

Show source

# File activerecord/lib/active_record/associations/builder/has_and_belongs_to_many.rb, line 31
      def check_validity(reflection)
        if reflection.association_foreign_key == reflection.foreign_key
          raise ActiveRecord::HasAndBelongsToManyAssociationForeignKeyNeeded.new(reflection)
        end

        reflection.options[:join_table] ||= join_table_name(
          model.send(:undecorated_table_name, model.to_s),
          model.send(:undecorated_table_name, reflection.class_name)
        )

        if model.connection.supports_primary_key? && (model.connection.primary_key(reflection.options[:join_table]) rescue false)
          raise ActiveRecord::HasAndBelongsToManyAssociationWithPrimaryKeyError.new(reflection)
        end
      end

check_validity

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