Lianja

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. Lianja

llSuccess = .F.

// 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
loOauth2 = createobject("CkOAuth2")
loOauth2.AccessToken = "FACEBOOK-ACCESS-TOKEN"

loRest = createobject("CkRest")

// Connect to Facebook...
llSuccess = loRest.Connect("graph.facebook.com",443,.T.,.T.)
if (llSuccess <> .T.) then
    ? loRest.LastErrorText
    release loOauth2
    release loRest
    return
endif

// Provide the authentication credentials (i.e. the access key)
loRest.SetAuthOAuth2(loOauth2)

// Assumes we've already obtained a Photo ID.
lcPhotoId = "10210199026347451"

loSbPath = createobject("CkStringBuilder")
loSbPath.Append("/v2.7/")
loSbPath.Append(lcPhotoId)

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

lcResponseJson = loRest.FullRequestNoBody("GET",loSbPath.GetAsString())
if (loRest.LastMethodSuccess <> .T.) then
    ? loRest.LastErrorText
    release loOauth2
    release loRest
    release loSbPath
    return
endif

loJson = createobject("CkJsonObject")
loJson.EmitCompact = .F.
loJson.Load(lcResponseJson)

// Show the JSON in human-readable format.
? loJson.Emit()

// A sample response is shown below.
// Demonstrate how to parse values from the JSON.
? "Album name: " + loJson.StringOf("album.name")
llCanDelete = loJson.BoolOf("can_delete")
? "Can Delete: " + str(llCanDelete)
? "From Name: " + loJson.StringOf("from.name")
lnHeight = loJson.IntOf("height")
lnWidth = loJson.IntOf("width")
? "Dimensions: " + str(lnWidth) + "x" + str(lnHeight)
? "First Image Source: " + loJson.StringOf("images[0].source")

// 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"
// }
// 


release loOauth2
release loRest
release loSbPath
release loJson