DRYing up a helper: wrap form_for and access local form variable

Question

I am trying to DRY up a bunch of forms code that has a repeating set of fields appearing at the end of each form. I wrote a helper that wraps around the form_for rails helpe

Answer 1

pretty sure this would work

def simple_form_helper(record_or_name_or_array, *args)
   options = ... # overriding some options, not relevant
   form_for(record_or_name_or_array, *(args << options.merge(:option => "blah"))) do |f|
       yield f if block_given?
       concat f.text_field :foo
       concat f.hidden_field :bar
       concat f.submit "Save"  
   end
end

and you can also call simple_form_helper :object without a block if you don't need to add any fields

Answer 2

You could also have used a partial layout, here is the syntax for reference.

Layout partial:

<%= form_for(record_or_name_or_array, :class => my_local_variable) do |f| %>
  <%= f.hidden_field :some_field %>

  <%= yield f %>

  <%= f.submit "Save" %>
<%- end %>

Template or partial where to use layout:

<%= render :layout => "partial_layout_name", :locals => {:my_local_variable => value} do |f| %>

  <%= f.text_field :more_fields_here %>

<%- end %>