Lianja

Read a Single Facebook Post

See more Facebook Examples

Demonstrates how to read the contents of a single Facebook post. A post is an individual entry in a profile's feed. The profile could be a user, page, app, or group. 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 = .F.) then
    ? loRest.LastErrorText
    release loOauth2
    release loRest
    return
endif

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

// This example assumes a post id was already retrieved.
// For example, it could've been retrieved by reading the user's feed:
// See Parsing the Facebook User Feed for code showing how to parse the JSON feed content.

lcPostId = "10224048320139890_10210156138515282"

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

// Select the fields we want.
// This example will select almost all the possible fields.
// See https://developers.facebook.com/docs/graph-api/reference/post/
loRest.AddQueryParam("fields","id,message,created_time,caption,description,from,link,name,object_id,picture,place,privacy,properties,shares,source,status_type,story,targeting,to,type,updated_time,with_tags")

lcResponseJson = loRest.FullRequestNoBody("GET",loSbPath.GetAsString())
if (loRest.LastMethodSuccess = .F.) 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 JSON response is shown here.  
// { 
//   "id": "12345678901234567_12345678900000004",
//   "message": "Ignore my posts -- I'm doing some testing for Facebook related programming...",
//   "created_time": "2016-09-29T20:46:18+0000",
//   "from": { 
//     "name": "John Doe",
//     "id": "12345678901234567"
//   },
//   "link": "https:\/\/www.facebook.com\/photo.php?fbid=10210199026247451&set=a.1237223526054.2038240.1094202869&type=3",
//   "object_id": "10210139026347451",
//   "picture": "https:\/\/scontent.xx.fbcdn.net\/v\/t1.0-9\/14462791_10210199026647451_7830642117574407060_n.jpg?oh=a7f9ed10ce9cd81a82adeb541c60e2e2&oe=58ABB195",
//   "privacy": { 
//     "allow": "",
//     "deny": "",
//     "description": "Public",
//     "friends": "",
//     "value": "EVERYONE"
//   },
//   "status_type": "added_photos",
//   "type": "photo",
//   "updated_time": "2016-09-29T20:46:18+0000"
// }

// This is the code to parse some fields in the JSON response.
? "type: " + loJson.StringOf("type")
? "message: " + loJson.StringOf("message")
? "id: " + loJson.StringOf("id")
? "link: " + loJson.StringOf("link")
? "privacy descripton: " + loJson.StringOf("privacy.description")

loDtime = createobject("CkDateTime")
llBLocalTime = .T.
loDtime.SetFromTimestamp(loJson.StringOf("created_time"))
loDt = createobject("CkDtObj")
loDtime.ToDtObj(llBLocalTime,loDt)

? str(loDt.Month) + "/" + str(loDt.Day) + "/" + str(loDt.Year) + "  " + str(loDt.Hour) + ":" + str(loDt.Minute)


release loOauth2
release loRest
release loSbPath
release loJson
release loDtime
release loDt