Question

I’m working in Rails2, the helper creates a hidden_field which is not helping me…
I load the input like this:

  - remote_form_for([:admin, @user]) do |f|
    // [...]
    - f.fields_for :account_user do |a|
      = a.collection_select :id, @accounts, :id, :name}, { :style => "width:330px;"}

and I get a result like this:

<select style="width: 330px;" name="user[account_user_attributes][id]" id="user_account_user_attributes_id">
    <option value="20">public</option>
    <option value="21">Test Account</option>
    <option value="73">ggg</option>
</select>
<input type="hidden" value="175" name="user[account_user_attributes][id]" id="user_account_user_attributes_id">

when I reach the controller my params hash is this:

(rdb:228) y params
--- !map:HashWithIndifferentAccess 
commit: Save booker
_method: put
action: update
id: "50"
controller: admin/users
user: !map:HashWithIndifferentAccess 
  user_role: agent
  password_confirmation: ""
  username: ERIK
  account_user_attributes: !map:HashWithIndifferentAccess 
    id: "175"
  password: ""
  email: [e-mail]

The value 175 in the hash refers to @user.account_user.id, the old value, but I don’t have the @user.account.id of the new selection.

What am I doing wrong?
Thank you

EDIT

I commented out the collection_select, and the hidden_field was still there, therefore… I need to change the title.
If I comment out f.fields_for the hidden_field disappears.
As pointed out by @jaydel, this is (very) probably the reason why I don’t get the right value in the hash. – And the quest goes on…

Actually it’s not my code, so now I’m checking for any overriding, as looks like it’s not the standard behavior

Answer 1

So we found out that the hidden field was originated by

- remote_form_for([:admin, @user]) do |f|
  - f.fields_for :account_user do |a| # <------- here
    = a.collection_select :id, @accounts, :id, :name

A better look to the api unvealed the problem, and here is the correct use of fields_for:

- remote_form_for([:admin, @user]) do |f|
  - f.fields_for @user.account_user do |a|
    = a.collection_select :id, @accounts, :id, :name

So the method instead of the symbol.

Note: This code answers the question, but in my case I don’t really need any fields_for in this relationship.