On Oct 26, 2011, at 11:53 AM, JavierQQ wrote:

> Hello,
> 
> I'm having some trouble with forms, my app allows to enter data by
> using a multi-step form that has 7 steps.
> There are 3 steps that may let the user to add 1 form, for example
> there's a step called "children"
> and that children has the following fields:
>  * name
>  * age
>  * gender
> but one father may have more than 1 child and I'm adding another form
> with ajax by following this
> http://stackoverflow.com/questions/4812003/adding-fields-dynamically-in-a-nested-model-form-in-rails-3

I haven't followed that particular tutorial, but I have used the Railscasts (73 
- 75) and Ryan Bates' fabulous nested_form gem. Note that the 'casts show how 
to do it long-hand, and the gem simply wraps up all that work and puts a bow on 
it. You can probably simply follow the directions from the gem and get on with 
your life if you already know the theory.

Walter

> 
> in the "invite" partial
> _invite.html.erb
> <%= fields_for "user[invites_attributes][]", invite do |i| %>
>  <li>
>    <%= link_to("Remove", "#delete", :class => "delete-invite") %>
>    <%= i.label :full_name, "Full Name" %>
>    <%= i.text_field :full_name %>
>    <%= i.label :email, "Email Address" %>
>    <%= i.text_field :email %>
>  </li>
> <% end %>
> 
> I'm having some troubles with the first line: <%= fields_for
> "user[invites_attributes][]", invite do |i| %>
> What is the correct usage of that? I'm using formtastic and when I
> made that line but with my fields
> 
>     <%= f.semantic_fields_for ("user[children_attributes][]", user)
> do |fes| %>
> 
> and I get this error
> 
>  ...............  unexpected ',', expecting ')'
> 
> I hope someone can help
> 
> Thanks in advance
> 
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