Rails has_many through form with checkboxes and extra field in the join model

Question

I\'m trying to solve a pretty common (as I thought) task.

There\'re three models:

class Product < ActiveRecord::Base  
  validates :name, presence         


        

Answer 1

I just did the following. It worked for me..

<%= f.label :category, "Category" %>
<%= f.select :category_ids, Category.order('name ASC').all.collect {|c| [c.name, c.id]}, {} %>