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    <p>You basically have it right, except for a few minor errors:</p> <ul> <li><p><code>attr_accessible :relations_id</code> is redundant. Remove it from your <code>Relationship</code> model.</p></li> <li><p>Both <code>Relationship</code> and <code>User</code> models call <code>has_many</code> to associate with each other. <code>Relationship</code> should call <code>belongs_to</code> because it contains the foreign key.</p></li> <li><p>In your <code>User</code> model, set <code>:foreign_key =&gt; "follower_id"</code>.</p></li> </ul> <hr> <p>Here is how I would do it.</p> <p>Have a <code>Follow</code> middle class with polymorphic association on the <code>followable</code> content side and has_many on the <code>follower</code> user side (user has many follows).</p> <p>First, create a <code>follows</code> table:</p> <pre><code>class CreateFollows &lt; ActiveRecord::Migration def change create_table :follows do |t| t.integer :follower_id t.references :followable, :polymorphic =&gt; true t.timestamps end end end </code></pre> <p>Replace <code>Relationship</code> model with a <code>Follow</code> model:</p> <pre><code>class Follow &lt; ActiveRecord::Base belongs_to :followable, :polymorphic =&gt; true belongs_to :followers, :class_name =&gt; "User" end </code></pre> <p>Include in <code>User</code> model:</p> <pre><code>has_many :follows, :foreign_key =&gt; :follower_id </code></pre> <p>Include in your three followable classes: </p> <pre><code>has_many :follows, :as =&gt; :followable </code></pre> <p>You can now do this: </p> <pre><code>TheContent.follows # =&gt; [Follow,...] # Useful for counting "N followers" User.follows # =&gt; [Follow,...] Follow.follower # =&gt; User Follow.followable # =&gt; TheContent </code></pre>
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    1. COThank you very much for your help, I am now running into problem implementing the follow and unfollow form as long as the create action. Any tips ?
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