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PORender a partial with a collection through multiple levels of has_many associations
 

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  1. PORender a partial with a collection through multiple levels of has_many associations
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    <p>I am trying to show a collection of orders that belongs to a sellers products posts</p> <p>the buyer is the user_id in the order, the seller is the user_id in the product</p> <p>Quickly:<br /> A user has many products<br /> A product has many postings (to bring products to multiple events)<br /> A post has many orders (other users can order)<br /></p> <p>Here's my code</p> <pre><code> class User &lt; ActiveRecord::Base # Include default devise modules. Others available are: # :token_authenticatable, :encryptable, :confirmable, :lockable, :timeoutable and :omniauthable devise :database_authenticatable, :registerable, :recoverable, :rememberable, :trackable, :validatable # Setup accessible (or protected) attributes for your model attr_accessible :name, :email, :password, :password_confirmation, :remember_me, :bio, :reason, :barter #:email, :name, :bio, :reason, :barter, : has_many :products, :dependent =&gt; :destroy has_many :posts, :dependent =&gt; :destroy has_many :orders, :dependent =&gt; :destroy class Product &lt; ActiveRecord::Base belongs_to :user belongs_to :club belongs_to :category has_many :posts, :dependent =&gt; :destroy class Post &lt; ActiveRecord::Base belongs_to :product, :include =&gt; [:user] belongs_to :event has_many :orders, :dependent =&gt; :destroy accepts_nested_attributes_for :orders class Order &lt; ActiveRecord::Base belongs_to :user belongs_to :post #schema create_table "orders", :force =&gt; true do |t| t.float "quantity" t.float "order_price" t.integer "post_id" t.integer "user_id" t.boolean "payment_received" t.integer "mark_for_buyer" t.string "comment_for_buyer" t.integer "mark_for_seller" t.string "comment_for_seller" t.datetime "created_at" t.datetime "updated_at" end add_index "orders", ["post_id"], :name =&gt; "index_orders_on_post_id" add_index "orders", ["user_id"], :name =&gt; "index_orders_on_user_id" create_table "posts", :force =&gt; true do |t| t.float "quantity" t.datetime "deadline" t.integer "product_id" t.integer "event_id" t.datetime "created_at" t.datetime "updated_at" end create_table "products", :force =&gt; true do |t| t.string "title" t.text "desc" t.text "ingredients" t.float "deposit" t.float "cost" t.string "units" t.float "quantity" t.float "deadline_hours" t.boolean "presell_option" t.integer "user_id" t.integer "category_id" t.integer "club_id" t.datetime "created_at" t.datetime "updated_at" end </code></pre> <h1>orders/index.html.erb</h1> <pre><code> #this one works beautifully &lt;%= render :partial =&gt; "order", :collection =&gt; @orders.find_all_by_user_id(current_user.id), :locals =&gt; {:order =&gt; @order} %&gt; #this one doesn't work (has_many association resources have been tricky for me) &lt;%= render :partial =&gt; "order", :collection =&gt; @orders.where(:post =&gt; {:product =&gt; {:user_id =&gt; current_user.id}}) , :locals =&gt; {:order =&gt; @order} %&gt; </code></pre> <h1>orders/_order.html.erb</h1> <pre><code> &lt;tr&gt; &lt;td&gt;&lt;%= order.user.name %&gt;&lt;/td&gt; &lt;td&gt;&lt;%= order.post.product.user.name %&gt;&lt;/td&gt; &lt;td&gt;&lt;%= link_to order.post.product.title, order.post %&gt;&lt;/td&gt; &lt;td&gt;&lt;%= number_to_currency order.order_price %&gt;&lt;/td&gt; &lt;td&gt;&lt;%= order.quantity %&gt;&lt;/td&gt; &lt;td&gt;&lt;%= order.updated_at.to_formatted_s(:short) %&gt; &lt;/td&gt; &lt;td&gt;&lt;%= order.payment_received %&gt;&lt;/td&gt; &lt;td&gt;&lt;%= link_to 'Show', order %&gt;&lt;/td&gt; &lt;td&gt;&lt;%= link_to 'Edit', edit_order_path(order) %&gt;&lt;/td&gt; &lt;td&gt;&lt;%= link_to 'Destroy', order, :confirm =&gt; 'Are you sure?', :method =&gt; :delete %&gt;&lt;/td&gt; &lt;/tr&gt; </code></pre> <p>Now, one collection works great, where the order has a user_id field, it collects the user that made the order and shows all the correct orders. The other collection doesn't work, and I'm getting this error:</p> <h1>Error</h1> <pre><code>ActiveRecord::StatementInvalid in Orders#index - No attribute named `user_id` exists for table `product` </code></pre> <p>But there IS a 'user_id' field in the 'product' table. I am able to call this in cancan to limit management of orders to the user who owns the product that is ordered, and works beautifully</p> <pre><code>can :update, Order, :post =&gt; {:product =&gt; {:user_id =&gt; user.id }} </code></pre> <p>Any insight is much appreciated!</p>
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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