Question

How would I go about having Formtastic automatically add the class “required” to elements that are required by rails validation?

I see that you can create custom inputs by adding the specified inputs in app/inputs but I don’t see a way to check to see if it’s required.

I’m assuming it would be something like:

class StringInput < Formtastic::Inputs::StringInput 
  include Base::Stringish
  include Base::Validations
  def input_html_options
    if required?
      super.merge(:class => "required")
    end
  end
end

but it’s not working 😐

Answer 1

I’m sure it does this anyway if you just ask it to:

<%= form.input :tutor_id, as: :select, collection: @student.tutors.all(order: 'name'), required: true %>

(this is Ruby 1.9 syntax)