Nested models in a form

[Rafael C. de Almeida]

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 %>

[Rafael C. de Almeida]

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?

[Rafael C. de Almeida]

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).

[Jim Ruther Nill]

On Mon, Jan 14, 2013 at 5:15 AM, Rafael C. de Almeida <almei...@gmail.com> 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.

 

On Sunday, January 13, 2013 7:00:55 PM UTC-2, Rafael C. de Almeida wrote:

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?

On Sunday, January 13, 2013 4:06:21 PM UTC-2, Rafael C. de Almeida wrote:

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 %>

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