PowerBuilder

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. PowerBuilder

integer li_rc
long li_Success
oleobject loo_Oauth2
oleobject loo_Rest
string ls_PhotoId
oleobject loo_SbPath
string ls_ResponseJson
oleobject loo_Json
long li_CanDelete
long li_Height
long li_Width

li_Success = 0

//  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
loo_Oauth2 = create oleobject
li_rc = loo_Oauth2.ConnectToNewObject("Chilkat.OAuth2")
if li_rc < 0 then
    destroy loo_Oauth2
    MessageBox("Error","Connecting to COM object failed")
    return
end if
loo_Oauth2.AccessToken = "FACEBOOK-ACCESS-TOKEN"

loo_Rest = create oleobject
li_rc = loo_Rest.ConnectToNewObject("Chilkat.Rest")

//  Connect to Facebook...
li_Success = loo_Rest.Connect("graph.facebook.com",443,1,1)
if li_Success <> 1 then
    Write-Debug loo_Rest.LastErrorText
    destroy loo_Oauth2
    destroy loo_Rest
    return
end if

//  Provide the authentication credentials (i.e. the access key)
loo_Rest.SetAuthOAuth2(loo_Oauth2)

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

loo_SbPath = create oleobject
li_rc = loo_SbPath.ConnectToNewObject("Chilkat.StringBuilder")

loo_SbPath.Append("/v2.7/")
loo_SbPath.Append(ls_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/
loo_Rest.AddQueryParam("fields","id,album,can_delete,can_tag,from,height,width,images,link,name,name_tags,picture,place,target")

ls_ResponseJson = loo_Rest.FullRequestNoBody("GET",loo_SbPath.GetAsString())
if loo_Rest.LastMethodSuccess <> 1 then
    Write-Debug loo_Rest.LastErrorText
    destroy loo_Oauth2
    destroy loo_Rest
    destroy loo_SbPath
    return
end if

loo_Json = create oleobject
li_rc = loo_Json.ConnectToNewObject("Chilkat.JsonObject")

loo_Json.EmitCompact = 0
loo_Json.Load(ls_ResponseJson)

//  Show the JSON in human-readable format.
Write-Debug loo_Json.Emit()

//  A sample response is shown below.
//  Demonstrate how to parse values from the JSON.
Write-Debug "Album name: " + loo_Json.StringOf("album.name")
li_CanDelete = loo_Json.BoolOf("can_delete")
Write-Debug "Can Delete: " + string(li_CanDelete)
Write-Debug "From Name: " + loo_Json.StringOf("from.name")
li_Height = loo_Json.IntOf("height")
li_Width = loo_Json.IntOf("width")
Write-Debug "Dimensions: " + string(li_Width) + "x" + string(li_Height)
Write-Debug "First Image Source: " + loo_Json.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"
//  }
//  


destroy loo_Oauth2
destroy loo_Rest
destroy loo_SbPath
destroy loo_Json