How to add custom attribute to all simple_form input based on model name and attribute value?

Question

I want to add a custom attribute to every input generated by simple_form. The attribute value is based on model name and field. So I did this:

# app/inputs/base.rb
class Base < SimpleForm::Inputs::Base
  def input_html_options
    super['custom-attr'] = "#{object_name}.#{attribute_name}"
  end
end

This isn't working. The code is not being loaded for execution at all. Am I missing something here?

Answer 1

you should add code in lib/simple_form/inputs/base.rb, code should look like this to make sure it can be loaded automatically

module SimpleForm
  module Inputs
    class Base
      def input_html_options
        @input_html_options...
      end
    end
  end
end

or use class_eval in config/initializers/simple_form_ext.rb like this

SimpleForm::Inputs::Base.class_eval do
  def input_html_options
    @input_html_options[:'custom-attr'] = "#{object_name}.#{attribute_name}"
    @input_html_options
  end
end