method

check_if_method_has_arguments!

Ruby on Rails latest stable (v7.1.3.2) - 0 notes - Class: ActiveRecord::QueryMethods

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What's this?

check_if_method_has_arguments!(method_name, args, message = nil) private

Checks to make sure that the arguments are not blank. Note that if some blank-like object were initially passed into the query method, then this method will not raise an error.

Example:

Post.references()   # raises an error
Post.references([]) # does not raise an error

This particular method should be called with a method_name (__callee__) and the args passed into that method as an input. For example:

def references(*args)

check_if_method_has_arguments!(__callee__, args)
...

end

Show source

# File activerecord/lib/active_record/relation/query_methods.rb, line 1985
      def check_if_method_has_arguments!(method_name, args, message = nil)
        if args.blank?
          raise ArgumentError, message || "The method .#{method_name}() must contain arguments."
        else
          yield args if block_given?

          args.flatten!
          args.compact_blank!
        end
      end

check_if_method_has_arguments!

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