I am displaying feed/posts of facebook page/group via graph api in my site by calling this Url in php code -
https://graph.facebook.com/page_id/feed?access_token=token_value
Then, Among many type of posts, for a post of picture type i get picture url as
http://photos-g.ak.fbcdn.net/hphotos-ak-frc3/t1.0-0/1972372_10152261154160659_883879121_s.jpg
Now it's the small size as the last part "_s.jpg" indicates.But i want all picture sizes be large.So to achieve this what parameters are needed to include in the graph api url - "https://graph.facebook.com/page_id/feed?access_token=token_value" so that all picture/video type of posts' picture will be in large size??, so is there will be "_b.jpg" at last as i presume.Is that possible in one graph api call?
I searched through the google but no luck, but ended up planning that i would replace the last part of the pic url above with "_b.jpg" so that url will be like -
http://photos-g.ak.fbcdn.net/hphotos-ak-frc3/t1.0-0/1972372_10152261154160659_883879121_b.jpg
But are there any drawbacks for this hack?? what are the correct ways to achieve if possible in one graph api call.
You could use a FQL query to get the source info of the large versions of the photos use in a Page's feed:
SELECT pid, object_id, src_big, src_big_width, src_big_height FROM photo WHERE object_id in (SELECT attachment.media.photo.fbid FROM stream WHERE source_id={page_id} AND actor_id={page_id})
Not sure if that’s actually documented somewhere – but in Graph API Explorer, the “Search for a field” feature suggests a field called full_picture. A few quick tests suggest that for most feed items, it returns the original image that was used making the post, whether it was a picture uploaded with the post, a video thumbnail or whatever.
You can use it in your feed calls like this:
/{user-or-page-id}/feed?fields=full_picture,message,type,…
Only fields you will get by default when using the fields parameter are id and created_time, everything else you might be interested in (message, type, from, etc.) you will have to ask for specifically as well.
That is for any type of feed item that might have a picture attached – expect for type:photo. For those, you get an object_id as well, and when you query that explicitly in a second request, you get an images data structure, that lists the different image sizes Facebook has on their CDN.
I have not found a wya to make it spit out that additional info within the original /foo/feed request in one go though – but if you collect all object_id that call delivers, you can use them in a second call like this to get the info for multiple objects at once:
/?ids=object_id1,object_id2,…&fields=images
with every feed there is a node name object-Id, use this id like this
graph.facebook.com/object-id/picture?type=large
if it shows question mark photo then use access_token=XXXXXX in query string.
notice,
/page/feed?fields=attachments
this will give you all of the attachments in their full sizes. worked charms for me