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PODouble nested model forms
 

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    <p>I am still having problems with nested forms. Here is my form code:</p> <pre><code>&lt;%= form_for @account do |f| %&gt; &lt;%= f.label :account_type %&gt;&lt;br /&gt; &lt;%= f.text_field :account_type %&gt;&lt;br /&gt; &lt;%= f.fields_for :organizations do |builder| %&gt; &lt;%= builder.label :name %&gt;&lt;br /&gt; &lt;%= builder.text_field :name %&gt;&lt;br /&gt; &lt;%= builder.label :website %&gt;&lt;br /&gt; &lt;%= builder.text_field :website %&gt;&lt;br /&gt; &lt;%= f.fields_for :locations do |builder| %&gt; &lt;%= builder.label :phone %&gt;&lt;br /&gt; &lt;%= builder.text_field :phone %&gt;&lt;br /&gt; &lt;%= builder.label :toll_free_phone %&gt;&lt;br /&gt; &lt;%= builder.text_field :toll_free_phone %&gt;&lt;br /&gt; &lt;%= builder.label :fax %&gt;&lt;br /&gt; &lt;%= builder.text_field :fax %&gt;&lt;br /&gt; &lt;% end %&gt; &lt;% end %&gt; &lt;%= f.submit "Add account" %&gt; &lt;% end %&gt; </code></pre> <p>The Account model:</p> <pre><code>class Account &lt; ActiveRecord::Base has_many :organizations accepts_nested_attributes_for :organizations end </code></pre> <p>The Organization model:</p> <pre><code>class Organization &lt; ActiveRecord::Base belongs_to :account has_many :locations accepts_nested_attributes_for :locations end </code></pre> <p>And the Location model:</p> <pre><code>class Location &lt; ActiveRecord::Base belongs_to :organization end </code></pre> <p>And lastly, the Accounts Controller:</p> <pre><code>class AccountsController &lt; ApplicationController def new @account = Account.new organization = @account.organizations.build organization.locations.build @header = "Create account" end def create @account = Account.new(params[:account]) if @account.save #handle success else render 'new' end end end </code></pre> <p>Here is the error I am getting:</p> <pre><code>ActiveRecord::UnknownAttributeError in AccountsController#create unknown attribute: locations Rails.root: C:/Documents and Settings/Corey Quillen/My Documents/rails_projects/shop_manager Application Trace | Framework Trace | Full Trace app/controllers/accounts_controller.rb:12:in `new' app/controllers/accounts_controller.rb:12:in `create' Request Parameters: {"utf8"=&gt;"✓", "authenticity_token"=&gt;"xuZLSP+PSjdra3v51nIkJYZeXRM0X88iF135hPlp4sc=", "account"=&gt;{"account_type"=&gt;"Company", "organizations_attributes"=&gt;{"0"=&gt;{"name"=&gt;"Atlas", "website"=&gt;"www.atlas.com"}}, "locations"=&gt;{"phone"=&gt;"555-555-5555", "toll_free_phone"=&gt;"800-555-5555", "fax"=&gt;"512-555-5555"}}, "commit"=&gt;"Add account"} </code></pre> <p>Any help with this will be greatly appreciated. I have been looking at this now for a couple of hours.</p>
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