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POHow to detect if response is positive or negative on Facebook add friends dialog callback?
 

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  1. POHow to detect if response is positive or negative on Facebook add friends dialog callback?
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    <p>I'm adding <a href="https://developers.facebook.com/docs/reference/dialogs/friends/" rel="nofollow">Facebook's add friend dialog</a> to a User show page in a rails app.</p> <p>I've added the following code to the page</p> <pre><code>&lt;%= link_to "Friend on Facebook", "http://www.facebook.com/dialog/friends/?id=#{@user.facebook_uid}&amp;app_id=#{@my_app_id}&amp;redirect_uri=#{user_url(@user)}" %&gt; </code></pre> <p>So far so good, and I'm getting the following callback responses from Facebook:</p> <pre><code>If the user clicks to "Add Friend" (not sure where the additional # characters are coming from": http://myapp.com/user/1?action=1#_=_ If the user clicks "Cancel": http://myapp.com/user/1?action=0#_=_ </code></pre> <p>I want to detect these responses, and in the User controller have the following code</p> <pre><code>def show .... if params[:action] == 1 flash[:success] = "Friend added!" elsif params[:action] == 0 flash[:error] = "Not added" else flash[:notice] = "no message" end end </code></pre> <p>The Facebook callback is always dropping through the conditionals and generating the "no message" flash. I've tried various permutations, including converting to strings, integers, and adding the <code>#_=_</code> characters.</p> <p>If I render <code>&lt;%= params %&gt;</code> in the view I see </p> <pre><code>{"action"=&gt;"show", "controller"=&gt;"users", "id"=&gt;"5"} </code></pre> <p>but the url in the addressbar has the Facebook param</p> <pre><code>http://myapp.com/user/1?action=1#_=_ </code></pre> <p>While I'd like to find a fix for this, I'd also just like to understand what is happening. I would have assumed the action=1 would be added to the params response.</p>
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    1. PTQuestion
    1. USAndy Harvey
    1. USAndy Harvey
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    1. COhow about `params[:action].to_i == 1` ?
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      1. POHow to detect if response is positive or negative on Facebook add friends dialog callback?
      1. USzakelfassi
    2. COthanks @zakelfassi, I've tried transforming variables into strings and integers. But the problem appears to be that the response is not accessible. If I render `=params[:action].to_s` in the view I only see `show`.
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      1. POHow to detect if response is positive or negative on Facebook add friends dialog callback?
      1. USAndy Harvey
    3. CO(notice the curly bracket in `flash[:success} = "Friend added!"`) - does the Facebook redirect occur in both cases ? and if so, do you see a `/show/?action=*` or not ?
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      1. POHow to detect if response is positive or negative on Facebook add friends dialog callback?
      1. USzakelfassi
 

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