Question

How to change default generated code for rails form helpers?

Code…

<%= f.text_field :title, class: 'inputbox' %>

…generates…

<input id="post_title" name="post[title]" class="inputbox" type="text">

…but I would like that text_field without class argument generated code above by default.

I am using rails 3.2.

Answer 1

In order to get this behavior you will either have to overwrite the existing text field method or add a new method that does what you want. I would recommend the latter since you won’t be changing the existing behavior of a built-in Rails method.

Similar to another answer:

class ActionView::Helpers::FormBuilder
  def inputbox_field(method, options = {})
    text_field(method, options.merge(class: 'inputbox'))
  end
end

Then you would just change you view to use this instead:

<%= f.inputbox_field :title %>