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PORails Polymorphic Associations has_one / belongs_to
 

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    <p>I have the following situation:</p> <p>I have a model called "ConfigurationItem".</p> <pre><code>class ConfigurationItem &lt; ActiveRecord::Base belongs_to :contract_asset belongs_to :provider belongs_to :configuration, polymorphic: true validate :name, :contract_asset, presence: true end </code></pre> <p>Then I have for the moment two models, "OsConfiguration" and "HardwareConfiguration"</p> <pre><code>class OsConfiguration &lt; ActiveRecord::Base has_one :configuration_item, as: :configuration end class HardwareConfiguration &lt; ActiveRecord::Base has_one :configuration_item, as: :configuration end </code></pre> <p>On my process of creation, I first come to the form of ConfigurationItem. So my question is, how can I create an Os or Hardware Configuration from the ConfigurationItem form. Something like this:</p> <p><img src="https://i.stack.imgur.com/t85eD.png" alt="enter image description here"></p> <p>What I tried so far is to route like this:</p> <pre><code>resources :configuration_items do resources :os_configurations resources :hardware_configurations end </code></pre> <p>But the rest is a bit heavy for me (I'm very new to rails).</p> <p>Plus, I'm using this gem : <a href="https://github.com/codez/dry_crud" rel="nofollow noreferrer">https://github.com/codez/dry_crud</a></p> <p>edit:</p> <p>To be more specific, from the configurationItem a form, I can choose an os or hardware configuration. If I choose an os configuration, a modal form will appear with his form. When I save the Os Configuration, I have to set his attribute configuration_item with the previous form, so he's not created yet and I can't access it from the os configuration's controller.</p> <p>It's like in rails_admin when from a form, you can create and add a new instance of an other model.</p> <p>Thank's !</p>
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    1. COTake a look at my answer here: http://stackoverflow.com/a/17854938/2503775
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