Ruby

Get Individual Photo Info

See more Facebook Examples

Assuming we have the ID of a Photo, this example demonstrates how to retrieve the photo information and parse the JSON. Ruby

require 'chilkat'

success = false

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

# This example assumes a previously obtained an access token
oauth2 = Chilkat::CkOAuth2.new()
oauth2.put_AccessToken("FACEBOOK-ACCESS-TOKEN")

rest = Chilkat::CkRest.new()

# Connect to Facebook...
success = rest.Connect("graph.facebook.com",443,true,true)
if (success != true)
    print rest.lastErrorText() + "\n";
    exit
end

# Provide the authentication credentials (i.e. the access key)
rest.SetAuthOAuth2(oauth2)

# Assumes we've already obtained a Photo ID.
photoId = "10210199026347451"

sbPath = Chilkat::CkStringBuilder.new()
sbPath.Append("/v2.7/")
sbPath.Append(photoId)

# Select the fields we want.
# This example will select many of the possible fields.
# See https://developers.facebook.com/docs/graph-api/reference/photo/
rest.AddQueryParam("fields","id,album,can_delete,can_tag,from,height,width,images,link,name,name_tags,picture,place,target")

responseJson = rest.fullRequestNoBody("GET",sbPath.getAsString())
if (rest.get_LastMethodSuccess() != true)
    print rest.lastErrorText() + "\n";
    exit
end

json = Chilkat::CkJsonObject.new()
json.put_EmitCompact(false)
json.Load(responseJson)

# Show the JSON in human-readable format.
print json.emit() + "\n";

# A sample response is shown below.
# Demonstrate how to parse values from the JSON.
print "Album name: " + json.stringOf("album.name") + "\n";
canDelete = json.BoolOf("can_delete")
print "Can Delete: " + canDelete.to_s() + "\n";
print "From Name: " + json.stringOf("from.name") + "\n";
height = json.IntOf("height")
width = json.IntOf("width")
print "Dimensions: " + width.to_s() + "x" + height.to_s() + "\n";
print "First Image Source: " + json.stringOf("images[0].source") + "\n";

# A sample JSON response is shown here.  
# { 
#   "id": "10210199026347451",
#   "album": { 
#     "created_time": "2009-10-19T00:06:46+0000",
#     "name": "Timeline Photos",
#     "id": "1237223526054"
#   },
#   "can_delete": true,
#   "can_tag": true,
#   "from": { 
#     "name": "Matt Smith",
#     "id": "10224048320139890"
#   },
#   "height": 120,
#   "width": 120,
#   "images": [
#     { 
#       "height": 120,
#       "source": "https:\/\/scontent.xx.fbcdn.net\/v\/t1.0-9\/14462791_10210199026347451_7830642117574407060_n.jpg?oh=a7f9ed10cf9cd81a82adeb541c60e2e2&oe=58ABB195",
#       "width": 120
#     }
#   ],
#   "link": "https:\/\/www.facebook.com\/photo.php?fbid=10210199026347451&set=a.1237223526054.2038240.1093202869&type=3",
#   "name": "Ignore my posts -- I'm doing some testing for Facebook related programming...",
#   "picture": "https:\/\/scontent.xx.fbcdn.net\/v\/t1.0-9\/14462791_10210199026347451_7830642117574407060_n.jpg?oh=a7f9ed10cf9cd81a82adeb541c60e2e2&oe=58ABB195"
# }
#