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POactive_admin - display a list of items that belongs to another item
 

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    <p>I am trying to display somehow the <code>line items</code> for the <code>order</code> in the active_admin <code>order show page</code>, no luck..</p> <p>here are the relations between models:</p> <p><strong>order.rb</strong></p> <pre><code>class Order &lt; ActiveRecord::Base has_many :line_items, :dependent =&gt; :destroy # ... validates :name, :address, :email, :presence =&gt; true validates :pay_type, :inclusion =&gt; PAYMENT_TYPES end </code></pre> <p><strong>line_item.rb</strong></p> <pre><code>class LineItem &lt; ActiveRecord::Base belongs_to :order belongs_to :product belongs_to :cart def total_price product.price * quantity end end </code></pre> <p><strong>active_admin order.rb</strong></p> <pre><code>ActiveAdmin.register Order do show do attributes_table :name, :email, :address, :pay_type, :created_at, :updated_at end end </code></pre> <p><strong>active_admin line_item.rb</strong></p> <pre><code>class LineItem &lt; ActiveRecord::Base belongs_to :order belongs_to :product belongs_to :cart def total_price product.price * quantity end end </code></pre> <p>when I click show order, it must display the items for this order.. In application's show file I did it with </p> <pre><code>&lt;%= render @order.line_items %&gt; </code></pre> <p><strong>_line_items.html.erb</strong></p> <pre><code>&lt;!-- START_HIGHLIGHT --&gt; &lt;% if line_item == @current_item %&gt; &lt;tr id="current_item"&gt; &lt;% else %&gt; &lt;tr&gt; &lt;% end %&gt; &lt;!-- END_HIGHLIGHT --&gt; &lt;td&gt;&lt;%= line_item.quantity %&gt;&amp;times;&lt;/td&gt; &lt;td&gt;&lt;%= line_item.product.title %&gt;&lt;/td&gt; &lt;td class="item_price"&gt;&lt;%= number_to_currency(line_item.total_price) %&gt;&lt;/td&gt; &lt;/tr&gt; </code></pre> <p>and the items are in the page, but in Active_Admin I don't know how to make it work.. Please help. Thank you for your time.</p> <p><strong>Solved</strong></p> <p>Thanks to bruno077 I managed to finally get the line_items in the order show_page in ActiveAdmin</p> <pre><code> show do |order| panel "Customer details" do attributes_table_for order, :first_name, :last_name, :card_type, :created_at, :ip_address end panel("Products for this order") do table_for(order.line_items) do column "Product" do |item| item.product.title end column "Price" do |item| item.product.price end column "Quantity" do |item| item.quantity end end end end </code></pre> <p>I got the ID of the product for now, but it's not far from here to get what I want. Cheers!</p>
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