Nested models in a form

Rails
1

Hello,

I’m trying to work with nested models in a form view and it’s not going
so
smoothly. A user has many lawyers and a lawyer can take many services. I
want a checkbox on which the user can select the services of each
lawyer.
How can I do it? This is what I’ve got so far:

<%= form_for @user do |f| %>

<%= f.label :email %><%= f.email_field :email %>

…

<% @user.lawyers.each do |lawyer| %>

<%= f.fields_for :lawyers, lawyer do |lf| %>

  <%= lf.label :name, "Nome: " %><%= lf.text_field :name %>

  <!-- Everything is working fine so far. However, I can get this to

work. A lawyer can have many services: -->

  <% Service.all.each do |service| %>

    <%= check_box_tag ???, service.id,

lawyer.services.include?(service) %>

  <% end %>

<% end %>

<% end %>

<% end %>

2

I have found out that user[lawyers_attributes][0][service_ids][] works
for
the first lawyer (I update 0 to 1 for the second and so on). However,
that
seems rather ugly. Is thera a way to extract the path
user[lawyers_attributes][0] from lf object?

3

On Mon, Jan 14, 2013 at 5:15 AM, Rafael C. de Almeida
[email protected]wrote:

Let me send you another post the intention of documenting this issue for
people from the future. The solution I’m going with for now is:
substituting “???” for lf.object_name+“[service_ids][]”. It may not be too
pretty, but it works (don’t forget setting :service_ids in attr_accessible
and accept_nested_attributes_for :services).

just a reminder that you may want to test your solution for creating new
records
and for editing existing ones if you’re using the same partial/template
for
both
pages (although I think it looks like it’s going to work except for the
scenario that
you try to edit and remove all services for a particular lawyer). also,
you don’t need
accepts_nested_attributes_for :services if you are using service_ids.

  <% Service.all.each do |service| %>

–

4

Let me send you another post the intention of documenting this issue for
people from the future. The solution I’m going with for now is:
substituting “???” for lf.object_name+"[service_ids][]". It may not be
too
pretty, but it works (don’t forget setting :service_ids in
attr_accessible
and accept_nested_attributes_for :services).