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POFacebook wall post error: OAuthException :: (#1500) The url you supplied is invalid
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  1. POFacebook wall post error: OAuthException :: (#1500) The url you supplied is invalid
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    copied!<p>I have a web-based news app that runs on Heroku. When users post a comment to a news story on my app, my app forwards the comment to the user's facebook wall using <code>fb_graph</code>. Everything worked perfectly until a couple of weeks ago. For no reason that I can explain I am now seeing some baffling behavior. </p> <p>Now, when a user submits a comment to a story the FB API responds with, <code>OAuthException :: (#1500) The url you supplied is invalid</code>. If, the same user then submits additional comments to the same story those comments are posted to the user's FB feed just fine.</p> <p>I have used the FB Graph API explorer to confirm that I have valid access tokens, and that my app does accept posts to the token-owner's FB feed.</p> <p>To make things even more baffling, when running my web app in development on localhost all of the posts go through just fine to my development FB app.</p> <pre><code>def post_to_facebook(story, post) auth = Authentication.find_by_provider_and_user_id("facebook", current_user.id) if auth me = FbGraph::User.me(auth.token) if me.permissions.include?(:publish_stream) begin me.feed!( :message =&gt; "#{best_name(current_user)} made the following post to NewsWick: #{post.contents}", :name =&gt; story.title, :link =&gt; "https://www.newswick.com/stories/"+story.id.to_s, :description =&gt; "Story posted to the NewsWick world-wide news service" , :picture =&gt; best_photo(story)[:photo_url] ) rescue =&gt; e @msg = "Facebook posting error: "+ e.to_s puts "Facebook feed posting error: #{e.message}" end else @msg = "No longer authorized to post to Facebook." end end return @msg end </code></pre> <p>One last thing to note, the only thing that I have changed w/r/t how my app interacts with FB in the last two weeks was that i accepted FB's <code>July Breaking Changes</code>.</p> <p>Anyone have any clues. This is driving me bonkers!!!</p>
 

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