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PORails Nested Object Form *_attributes
 

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    <p>I'm using Rails 2.3.2, and trying to get a nested object form to work properly. I've narrowed my problem to the issue that Rails is not setting my nested form elements with the *_attributes required to initiate the accepts_nested_attributes_for processing. </p> <p>My model code is:</p> <pre><code>class Person &lt; Party has_one :name, :class_name =&gt; "PersonName" accepts_nested_attributes_for :name, :allow_destroy =&gt; true end class PersonName &lt; ActiveRecord::Base belongs_to :person end </code></pre> <p>My view code looks like this (I'm using HAML):</p> <pre><code>%h3 New customer = error_messages_for :person, :person_name, :name, :country - form_for :person, :url =&gt; collection_url, :html =&gt; {:class =&gt; 'MainForm'} do |person_form| - @person.build_name unless @person.name - person_form.fields_for :name do |name_form| = name_form.label :given_name, "First Name:" = name_form.text_field :given_name = name_form.label :family_name, "Last Name:" = name_form.text_field :family_name = hidden_field_tag :inviter_id, params[:inviter_id] = hidden_field_tag :inviter_code, params[:inviter_code] %p= submit_tag "Create" = link_to 'Back', collection_url </code></pre> <p>Instead of params being: </p> <pre><code>{"person"=&gt;{"name_attributes"=&gt;{"given_name"=&gt;"Fred", "family_name"=&gt;"Flintstone"}}, ...} </code></pre> <p>I get:</p> <pre><code>{"person"=&gt;{"name"=&gt;{"given_name"=&gt;"Fred", "family_name"=&gt;"Flintstone"}}, ...} </code></pre> <p>As a result, I get a TypeMismatch exception. I've followed the documentation from <a href="http://ryandaigle.com/articles/2009/2/1/what-s-new-in-edge-rails-nested-attributes" rel="nofollow noreferrer">Ryan Daigle</a>. I've also followed the advice from <a href="http://www.pixellatedvisions.com/2009/03/18/rails-2-3-nested-model-forms-and-nil-new-record" rel="nofollow noreferrer">this blog</a> and the <a href="https://github.com/ryanb/complex-form-examples/tree" rel="nofollow noreferrer">complex-forms-example</a>. </p> <p>Using Firebug, I went through my form and adjusted the name attribute of the input tags from name to name_attributes. This produced the params with name_attributes, and the create worked fine.</p> <p>I'm stuck as I cannot figure out why my form is not producing the *_attributes form of the name.</p> <p>Another thing I tried is I got the complex_form_example working in my environment. I've gone through every inch of the controller, models and views and compared it to my code. I cannot find what is different. I know this is something small, and would appreciate any help!</p> <p>Thanks!</p>
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    1. COWhat does your view code look like?
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    2. COI added a representation of my view code.
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    3. CONote: It doesn't work either if you haven't defined the 'accepts_nested_attributes' option! But that's okay in your case :).
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