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thanks but release notes are mostly frozen once they are published, and provide only an overview of the new stuff

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Xavier Noria 2009-03-19 23:23:05 +01:00
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railties/guides/source/2_3_release_notes.textile
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@ -365,17 +365,6 @@ You can write this view in Rails 2.3:
<% end %> <% end %>
</erb> </erb>
When nesting across a +has_one+ relationship you will need to create a new blank object for the nested object before calling +fields_for+ in the view.
A +build_&lt;model_name&gt;+ method has been created for this purpose:
<erb>
<% @customer.build_order unless @customer.order %>
<% customer_form.fields_for :orders do |order_form| %>
</erb>
Otherwise +@customer.order+ will return +nil+ and your form will fail. +has_many+ relationships do not require this extra step.
* Lead Contributor: "Eloy Duran":http://www.superalloy.nl/blog/ * Lead Contributor: "Eloy Duran":http://www.superalloy.nl/blog/
* More Information: * More Information:
** "Nested Model Forms":http://weblog.rubyonrails.org/2009/1/26/nested-model-forms ** "Nested Model Forms":http://weblog.rubyonrails.org/2009/1/26/nested-model-forms