Rails forms for has_many relations
This is pretty cool. Say you have a model with a has_many relation, and you want to edit the model and all it’s children on one page. Rails can take care of all of this, automatically, with the standard controller. You just need this in your parent model:
class User < ActiveRecord::Base has_many :posts accepts_nested_attributes_for :posts end
And you need a form like this:
<% form_for(@user) do |f| %> <%= f.label_for :blog_name %> <%= f.text_field :blog_name %> <% f.fields_for :posts do |p| %> <%= p.label_for :title %> <%= p.text_field :title %> ... <% end %> <%= f.submit %> <% end %>
And that’s it! You can use all the craziness that the form helpers do (grouping radio buttons, converting to values booleans, etc) and it all works out.
It’s exciting. I feel like I’m finally getting into the really good stuff with Rails.