Implicit argument passing of super from method defined by define_method() is not supported

Question

In "Agile Web Development with Rails" (third edition) page 537 - 541 it has "Custom Form Builders" code as follows:

  class TaggedBuilder < ActionView::Helpers::FormBuilder
    # <p> # <label for="product_description">Description</label><br/> # <%= form.text_area 'description' %> #</p>
    def self.create_tagged_field(method_name) 
      define_method(method_name) do |label, *args|
        @template.content_tag("p" , @template.content_tag("label" , label.to_s.humanize, 
        :for => "#{@object_name}_#{label}") + "<br/>" + super)
      end
    end
    field_helpers.each do |name| 
      create_tagged_field(name)
    end 
  end

This code doesn't work with Ruby 1.9.1. It returns error as follows:

implicit argument passing of super from method defined by define_method() is not supported. Specify all arguments explicitly. (ActionView::TemplateError)

My question is: What should I change in the code to fix this?

score 21 · Accepted Answer · edited May 23 '17 at 11:54

21

The super above passed all parameters (see this recent question).

As the error message states, you must here "specify all arguments explicitly". Replace super with super(label, *args).

edited May 23 '17 at 11:54

Community

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answered Apr 03 '10 at 19:47

Marc-André Lafortune

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score 17 · Answer 2 · answered Nov 24 '12 at 18:43

17

I encountered with this problem in a define_method without arguments

define_method :"#{info_type}_info" do

  info = super
  .......

end

And still found this problem. I had to explicit put the parenthesis:

define_method :"#{info_type}_info" do

  info = super()
  .......

end

answered Nov 24 '12 at 18:43

Brenes

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that looks like a bug in the ruby parser to me. you might want to submit a report to the ruby core team. not sure if it's something they can fix or not. requiring parens doesn't look like ruby to me. :) – Stephen C Apr 26 '13 at 15:00
3

It doesn't appear to be a bug. See [this question](http://stackoverflow.com/questions/2570428/constructor-overriding), and [this form thread](https://www.ruby-forum.com/topic/146693). – Jared Beck Jul 08 '13 at 04:45

Implicit argument passing of super from method defined by define_method() is not supported

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