have a look:
http://railscasts.com/episodes/73-complex-forms-part-1
http://railscasts.com/episodes/73-complex-forms-part-2
http://railscasts.com/episodes/73-complex-forms-part-3
2010/2/6 acreadinglist <andrew.c...@gmail.com>
> I have two models, links and tags, associated through a 3rd model,
> link_tags. I added the following to my link model,
>
> has_many :tags, :through => :link_tags
> has_many :link_tags
>
> accepts_nested_attributes_for :tags, :allow_destroy => :false,
> :reject_if => proc { |attrs| attrs.all? { |k, v| v.blank? } }
>
> and put this in a partial called by the new and edit forms for links,
>
> <%= f.error_messages %>
>
> <p>
> <%= f.label :uri %><br />
> <%= f.text_field :uri %>
> </p>
> <p>
> <%= f.label :title %><br />
> <%= f.text_field :title %>
> </p>
>
> <h2>Tags</h2>
> <% f.fields_for :tags do |tag_form| %>
> <p>
> <%= tag_form.label :name, 'Tag:' %>
> <%= tag_form.text_field :name %>
> </p>
> <% unless tag_form.object.nil? || tag_form.object.new_record? %>
> <p>
> <%= tag_form.label :_delete, 'Remove:' %>
> <%= tag_form.check_box :_delete %>
> </p>
> <% end %>
> <% end %>
>
> <p>
> <%= f.submit 'Update' %>
> </p>
>
> The POST on submit fails with the following error:
>
> Tag(#-621698598) expected, got Array(#-609734898)
>
> Does anyone know the necessary steps to do this? I've been basing it
> off the multi-model section of this:
> http://guides.rubyonrails.org/getting_started.html
> , but it seems incomplete for has_many => :through.
>
> Thanks,
> Andrew
>
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--
tommy xiao
E-mail: xiaods(AT)gmail.com
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