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PORails 3 friendship model : how to ignore a friend request?
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  1. PORails 3 friendship model : how to ignore a friend request?
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    copied!<p>I have the traditional friendship model: </p> <p>The user model has:</p> <pre><code>has_many :friendships, :dependent =&gt; :destroy has_many :friends, :through =&gt; :friendships, :dependent =&gt; :destroy has_many :inverse_friendships, :class_name =&gt; "Friendship", :foreign_key =&gt; "friend_id", :dependent =&gt; :destroy has_many :inverse_friends, :through =&gt; :inverse_friendships, :source =&gt; :user, :dependent =&gt; :destroy </code></pre> <p>I would like to define the status "friend" only if a friend request has been sent, and accepted by the other user. Everything works fine except that I did not manage to process the "ignore friend request" part.</p> <p>What I am trying to do is: on a user profile page, there's a list of requests from other user, waiting approval. The user can then accept a friend request (then it becomes a friend) or reject it (then the friendship relationship is destroyed).</p> <p>Here is the piece of code, in the friendship controller, when it blocks:</p> <pre><code>&lt;h2 class="small_v_space"&gt;Waiting your approval&lt;/h2&gt; &lt;ul&gt; &lt;% for user in @user.inverse_friends %&gt; &lt;% if user.friends.exists?(@user) and not @user.friends.exists?(user) %&gt; &lt;li&gt; &lt;%=h user.name %&gt; (&lt;%= link_to "Accept", friendships_path(:friend_id =&gt; user), :method =&gt; :post %&gt;, &lt;%= link_to "Ignore", friendship_path, :controller =&gt; :friendships, :method =&gt; :delete %&gt;) &lt;/li &lt;% end %&gt; &lt;% end %&gt; &lt;/ul&gt; </code></pre> <p>The problem is that if I do like this, the delete method will delete the last added relationship, instead of the one linked to the ignore button. </p> <p><strong>Let's work with an example</strong>: <em>Here is the relationship I would like to destroy:</em> User_id: 10 Friend_id: 6 Friendship_id: 18</p> <p>I'm on the 'show' page (profile) of user, whose user_id is 6. I see that user 10 has made a friend request that I would like to ignore. Even if I managed to extract the proper Friendship_id, doing:</p> <pre><code>&lt;%= link_to "Ignore", friendship_path(Friendship_id), :controller =&gt; :friendships, :method =&gt; :delete %&gt;) </code></pre> <p>It results in "Cannot find Friendships with ID=18[where user_id=6]"</p> <p>Does anyone know how I could call the destroy action on the right relationship in this case ? Or should I proceed differently ?</p> <p>Many thanks for any clue!</p> <p><strong>EDIT</strong></p> <p><em>Destroy action of the friendship controller:</em></p> <pre><code>def destroy @friendship = current_user.friendships.find(params[:id]) if @friendship.friend.friends.exists?(current_user) @friendship.destroy flash[:notice] = "Removed friendship." else @friendship.destroy flash[:notice] = "Removed friend request." end redirect_to current_user end </code></pre> <p><strong>EDIT 2:</strong></p> <pre><code>class Friendship belongs_to :user belongs_to: :friend, :class_name =&gt; 'User' end </code></pre> <p>User A sends a friend request to user B (A=user, B=friend in the instance of the class). If B accepts the requests, then another instance is created (B=user, A=friend). If there exists both a relation A->B and B->A, A is a friend of B. Otherwise, the request remains pending (or can be ignored, rejected...).</p>
 

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