title: FaceBook feed dialog share options
body: <p><strong>Some Background Info</strong></p>
  
  <p>As of Mar/Feb 2014, the Facebook sharer.php way of sharing content no longer accepts custom parameters. See <a href="https://developers.facebook.com/bugs/357750474364812/?comment_id=308955395926697" rel="nofollow noreferrer">response from a Facebook engineer</a>.</p>
  
  <p>It used to allow multiple parameters in this form:</p>
  
  <pre><code>http://www.facebook.com/sharer.php?s=100
      &amp;p[url]={url}
      &amp;p[images][0]={img}
      &amp;p[title]={title}
      &amp;p[summary]={desc}
  </code></pre>
  
  <p>So you could override the title, image and description that facebook would scrape from the page, but it seems these are now ignored. </p>
  
  <p>Instead, Facebook now favours the opengraph tags on the page.</p>
  
  <p><strong>So why is this a problem?</strong></p>
  
  <p>This is my scenario: I have a gallery page with multitple images. I have a lightbox that loads an image when clicked, and when the lightbox is shown, I also show share icons for all the major social networks, including facebook. </p>
  
  <p>The facebook sharer url is built up using the above format, so I pass in the specific image together with the image caption. These values are now ignored.</p>
  
  <p><strong>Feed Dialog To The Rescue?</strong></p>
  
  <p>The <a href="https://developers.facebook.com/docs/sharing/reference/feed-dialog" rel="nofollow noreferrer">Feed dialog</a> method of sharing is now the preferred method, and it supports passing in custom images and captions. It works perfectly in my above gallery scenario. But it has a limitation: it does not allow you to share the content on a page you manage like the sharer.php does:</p>
  
  <p><img src="https://i.stack.imgur.com/NgkkE.png" alt="sharer.php share options"></p>
  
  <p><strong>So my question is...</strong></p>
  
  <p>How can I get the Feed Dialog to work like the sharer.php and give the end-user the option to share to a group, friend's timeline or a page he/she manages?</p>