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POJoining tables in rails 3
 

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    <p>Hey I'm very new to rails and would appreciate the help greatly!</p> <p>Every user has a profile page that shows all of his events. Every event has many assets (images). And every event also has its own event page. What I'm struggling with is how to display the events (if they exist) on the user profile page and do the join.</p> <p>In my profile controller i have : @events = User.joins(:events) to get the events but I then need to drill into the assets table to get the relevant image (for now I just want to grab any image that's there for that event, later i'll add a "main picture" flag).</p> <p>Here are my models.</p> <pre><code>class Asset &lt; ActiveRecord::Base belongs_to :event has_attached_file :image, :styles =&gt; { :thumb=&gt; "100x100#", :small =&gt; "300x300&gt;", :large =&gt; "600x600&gt;" }, :storage =&gt; :s3, :s3_credentials =&gt; "#{RAILS_ROOT}/config/s3.yml", :path =&gt; ":attachment/:id/:style.:extension", :bucket =&gt; 'wpt-assets' end class Event &lt; ActiveRecord::Base attr_accessible :name, :budget, :client, :date, :description, :venue, :attendees, :assets_attributes belongs_to :user has_many :assets#, :dependent =&gt; destroy accepts_nested_attributes_for :assets end class User &lt; ActiveRecord::Base rolify devise :database_authenticatable, :registerable, :recoverable, :rememberable, :trackable, :validatable # Setup accessible (or protected) attributes for your model attr_accessible :role_ids, :as =&gt; :admin attr_accessible :username, :email, :password, :password_confirmation, :remember_me,:avatar, :bio, :title, :company,:facebook,:twitter,:pinterest,:linkedin validates_presence_of :username validates_uniqueness_of :username, :email, :case_sensitive =&gt; false has_many :events has_attached_file :avatar, :styles =&gt; { :medium =&gt; "100x100&gt;", :thumb =&gt; "24x24&gt;" } def to_param username end end </code></pre>
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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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