(Ruby) Get Individual Photo Info

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

Chilkat Ruby Downloads install from rubygems.org gem install chilkat or download... Ruby Library for Windows, MacOS, Linux, Alpine Linux

require 'chilkat'

# 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"
# }
#