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copied!<p>Craig, it sounds like what you are looking for is accepts_nested_attributes_for which is a much better way of handling nested models in a form.</p> <p>Rather than just steal all of Ryan's work and repost it here, I'll just give you a link to his screencast: </p> <p><a href="http://railscasts.com/episodes/196-nested-model-form-part-1" rel="nofollow noreferrer">http://railscasts.com/episodes/196-nested-model-form-part-1</a></p> <p>This is based off his complex forms series.</p> <p>You should be able to taylor this tutorial to what you are trying to do, but if not I'd be happy to help.</p> <p><strong>EDIT:</strong></p> <p>Alright, after looking at your code, there are a few things causing you problems. :)</p> <p>First of all, with associations, you don't need to pull an extra collection for billings, i.e.:</p> <pre><code>@host = Host.find(params[:id]) @voips = Voip.find(:all) @custsupps = Custsupp.find(:all) @payments = Payment.find(:all) @billings = Billing.find(:all) # <-- This is not needed and causing your problems </code></pre> <p>The association setup in the model does this all for you. This is part of the magic of rails. :D</p> <p>Now, it is important to note that when using associations you need to make sure that the objects are actually associated. In other words, if you have 3 Billings objects in your database and they are not associated with your Host object, they won't show up in the form.</p> <p>If you are trying to associate a billing TO a Host using a checkbox you are going to want to take a different approach, because your form with only display Billings <em>already associated</em> with your Host.</p> <p>If your just trying to edit or modify existing Billings that are associated to the Host, where the checkbox represents a 'paid' attribute (a boolean) for instance, then this approach is fine and your form code would look something like this:</p> <pre><code><% f.fields_for :billings do |b| %><br /> <%= b.check_box :paid %> <%= b.title %> <% end %> </code></pre> <p>So perhaps clarify what your trying to accomplish from a functionality standpoint and we can find a better solution.</p>

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