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POproper way to setup facebook canvas url and routes in a rails app
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  1. POproper way to setup facebook canvas url and routes in a rails app
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    copied!<p>I have an existing rails application to which i am adding a new controller to handle requests from a small facebook app (using the facebooker plugin) i am building. </p> <p>In the facebook app's config i set the canvas callback url to <a href="http://my.host.ip/fb/" rel="nofollow noreferrer">http://my.host.ip/fb/</a></p> <p>In a pure facebook application the url would leave off the /fb/ and the user would be directed to the app's home page. but since this is an existing application, i cannot do that.</p> <p>Now in my routes.rb i have:</p> <pre><code>map.connect '/fb/like/:id', :controller =&gt; 'facebook_app', :action =&gt; "like" map.connect '/fb/:category', :controller =&gt; 'facebook_app', :action =&gt; "index", :category =&gt; "default" </code></pre> <p>Ao when the user visits <a href="http://apps.facebook.com/my_app_name/" rel="nofollow noreferrer">http://apps.facebook.com/my_app_name/</a> facebook makes a call to <a href="http://my.host.ip/fb/" rel="nofollow noreferrer">http://my.host.ip/fb/</a> and that renders fine.</p> <p>On that page i have links to the "like" action:</p> <pre><code>&lt;%= link_to "like", :controller =&gt; "fb", :action =&gt; "like", :id =&gt; id %&gt; </code></pre> <p>Only problem is these get rendered as:</p> <p><a href="http://apps.facebook.com/my_app_name/fb/like/12345" rel="nofollow noreferrer">http://apps.facebook.com/my_app_name/fb/like/12345</a></p> <p>When what i want is:</p> <p><a href="http://apps.facebook.com/my_app_name/like/12345" rel="nofollow noreferrer">http://apps.facebook.com/my_app_name/like/12345</a></p> <p>See how the /fb/ is causing me grief?</p> <p>Is there a way around this? either some way in the routes definition to say that the /fb/ was only for incoming URLs? or some way in the url generator to omit the /fb/?</p> <p>I found one workaround… if I add this route above the existing "like" route:</p> <pre><code>map.connect '/like/:id', :controller =&gt; 'facebook_app', :action =&gt; "like" </code></pre> <p>Then that first route is what's used by the link_to url generator and the correct URL gets generated:</p> <p><a href="http://apps.facebook.com/my_app_name/like/12345" rel="nofollow noreferrer">http://apps.facebook.com/my_app_name/like/12345</a></p> <p>Which when clicked causes facebook to make this request to my app:</p> <p><a href="http://my.host.ip/fb/like/12345" rel="nofollow noreferrer">http://my.host.ip/fb/like/12345</a></p> <p>Which is matched by the original "like" route.</p> <p>I'd rather not have to do this for every action in my facebook controller though.</p>
 

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