Rails - Feb 2009 - how to get form parameters while using fields_for with nested attributes

hi all..

i am trying to use *fields_for* to get and save nested attributes in a form.
i have a ''Partner'' model associated with an
''Address'' model.
partner has_many :addresses

although the form is displaying fine, but on submitting it the following
error is shown:

*can''t convert HashWithIndifferentAccess into Array*

on this line:

*@partner = Partner.new(params[:partner])*

the names of main ''partner'' fields are like:

*partner[par_name]*

the names of ''address'' fields are like:

*partner[addresses][add_line_1]*


*some code:*

<% form_for(@partner) do |f| %>
  <%= f.error_messages %>
  <%= f.label :par_name, "Partner Name" %><br />
  <%= f.text_field :par_name %>
      <% f.fields_for :addresses do |addr_fields| %>
          <p>
            <%= addr_fields.label :add_line_1, "Address Line 1"
%><br />
            <%= addr_fields.text_field :add_line_1 %>
          </p>
      <% end %>
  <%= f.submit "Create" %>
<% end %>


what''s wrong over here??

regards

-------------
Sahil

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Take a look at the complex forms railscasts series (railscasts.com)...

Cheers, Sazima

On Feb 9, 6:32 am, Sahil Dave
<sahil.dav...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> hi all..
>
> i am trying to use *fields_for* to get and save nested attributes in a
form.
> i have a ''Partner'' model associated with an
''Address'' model.
> partner has_many :addresses
>
> although the form is displaying fine, but on submitting it the following
> error is shown:
>
> *can''t convert HashWithIndifferentAccess into Array*
>
> on this line:
>
> *@partner = Partner.new(params[:partner])*
>
> the names of main ''partner'' fields are like:
>
> *partner[par_name]*
>
> the names of ''address'' fields are like:
>
> *partner[addresses][add_line_1]*
>
> *some code:*
>
> <% form_for(@partner) do |f| %>
>   <%= f.error_messages %>
>   <%= f.label :par_name, "Partner Name" %><br />
>   <%= f.text_field :par_name %>
>       <% f.fields_for :addresses do |addr_fields| %>
>           <p>
>             <%= addr_fields.label :add_line_1, "Address Line
1" %><br />
>             <%= addr_fields.text_field :add_line_1 %>
>           </p>
>       <% end %>
>   <%= f.submit "Create" %>
> <% end %>
>
> what''s wrong over here??
>
> regards
>
> -------------
> Sahil
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On Feb 9, 6:07 pm, Sazima
<rsaz...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> Take a look at the complex forms railscasts series (railscasts.com)...
>
thanx for the link.. now i am able to save an address along with a
partner. but the partner_id (foreign key for partner) inside address
table is not getting filled up. do i need to manually put the foreign
key, if so how do i do it.


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