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POHow to design model with two, independent and optional relations to the same model?
 

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  1. POHow to design model with two, independent and optional relations to the same model?
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    <p>I've got a problem with designing my <code>User</code> model and making a decent form for it. I just want to ensure myself that I'm doing it wrong :) So it goes like this:</p> <p><code>User</code> has got two <code>Address</code>es: </p> <ul> <li>a mandatory <code>Address</code> for identification and billing,</li> <li>an optional shipping <code>Address</code> that he could fill in or leave blank</li> </ul> <p>I tried like this:</p> <pre><code>class User &lt; ActiveRecord::Base has_one :address has_one :shipping_address, :class_name =&gt; 'Address', :foreign_key =&gt; 'shipping_address_id' accepts_nested_attributes_for :address accepts_nested_attributes_for :shipping_address #validations for user end </code></pre> <p>and:</p> <pre><code>class Address &lt; ActiveRecord::Base #validations for address end </code></pre> <p>And then I make a form for <code>User</code> using <code>form_for</code> and nested <code>fields_for</code>. Like this:</p> <pre><code>= form_for @user, :url =&gt; '...' do |a| = f.error_messages ... = fields_for :address, @user.build_address do |a| ... </code></pre> <p>But then, despite that <code>f.error_messages</code> generates errors for all models, fields for <code>Address</code>es don't highlight when wrong.</p> <p>Also I have problems with disabling validation of the second address when the user chose not to fill it in.</p> <p>And I have doubts that my approach is correct. I mean the <code>has_one</code> relation and overall design of this contraption. </p> <p>So the question:</p> <p>Am I doing it wrong? How would You do that in my place?</p>
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    1. UStereško
    1. USnooga
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    1. COI'd use `belongs_to` association in the `User` but then the form explodes!
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      1. POHow to design model with two, independent and optional relations to the same model?
      1. USnooga
    2. COwhere is the foreign key stored? If the `user` has the `address_id` and the `shipping_address_id` it should be `belongs_to` otherwise `has_one` (and the address `belongs_to` user).
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      1. POHow to design model with two, independent and optional relations to the same model?
      1. USnathanvda
    3. COAfter using `has_one` in `User` ActiveRecord wanted the `shipping_address_id` and `address_id` in Address! So i put them there. I know it's not the best idea and the whole relation is somewhat inversed right now.
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      1. POHow to design model with two, independent and optional relations to the same model?
      1. USnooga
 

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