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Visual FoxPro Web API Examples

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(Visual FoxPro) Get the Photos for a User

Demonstrates how to get the photos that the user has uploaded.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

LOCAL loOauth2
LOCAL loRest
LOCAL lnSuccess
LOCAL lcResponseJson
LOCAL loJson
LOCAL loDtime
LOCAL lnBLocalTime
LOCAL loDt
LOCAL i
LOCAL lnNumItems
LOCAL lcName

* 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('Chilkat_9_5_0.OAuth2')
loOauth2.AccessToken = "FACEBOOK-ACCESS-TOKEN"

loRest = CreateObject('Chilkat_9_5_0.Rest')

* Connect to Facebook.
lnSuccess = loRest.Connect("graph.facebook.com",443,1,1)
IF (lnSuccess <> 1) THEN
    ? loRest.LastErrorText
    RELEASE loOauth2
    RELEASE loRest
    CANCEL
ENDIF

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

* Indicate that we only want the photos the user has personally uploaded.
loRest.AddQueryParam("type","uploaded")

* We could limit the number of photos by setting a limit.
loRest.AddQueryParam("limit","5")

* Gets the 1st page of photos. (Not the actual image data, but the information about each photo.)
* See https://developers.facebook.com/docs/graph-api/reference/user/photos/ for more information.
lcResponseJson = loRest.FullRequestNoBody("GET","/v2.7/me/photos")
IF (loRest.LastMethodSuccess <> 1) THEN
    ? loRest.LastErrorText
    RELEASE loOauth2
    RELEASE loRest
    CANCEL
ENDIF

loJson = CreateObject('Chilkat_9_5_0.JsonObject')
loJson.EmitCompact = 0
loJson.Load(lcResponseJson)
? loJson.Emit()

* A sample JSON response is shown below.  
* This is the code to parse the JSON response.

loDtime = CreateObject('Chilkat_9_5_0.CkDateTime')
lnBLocalTime = 1

i = 0
lnNumItems = loJson.SizeOfArray("data")
DO WHILE i < lnNumItems
    loJson.I = i
    ? "--- " + STR(i)
    lcName = loJson.StringOf("data[i].name")
    IF (loJson.LastMethodSuccess = 1) THEN
        ? "name: " + lcName
    ENDIF

    ? "id: " + loJson.StringOf("data[i].id")

    * We can load the created_time into a CkDateTime...
    loDtime.SetFromTimestamp(loJson.StringOf("data[i].created_time"))
    loDt = loDtime.GetDtObj(lnBLocalTime)
    ? STR(loDt.Month) + "/" + STR(loDt.Day) + "/" + STR(loDt.Year) + "  " + STR(loDt.Hour) + ":" + STR(loDt.Minute)
    RELEASE loDt
    i = i + 1
ENDDO

* We can get the paging information as follows:
? "URL for next page: " + loJson.StringOf("paging.next")
? "before cursor: " + loJson.StringOf("paging.cursors.before")
? "after cursor: " + loJson.StringOf("paging.cursors.after")

* This is a sample JSON response:
* { 
*   "data": [
*     {
*       "created_time": "2016-09-29T20:46:18+0000",
*       "name": "Ignore my posts -- I'm doing some testing for Facebook related programming...",
*       "id": "10210199026347451"
*     },
*     { 
*       "created_time": "2016-09-19T02:00:42+0000",
*       "id": "10210091531240138"
*     },
*     { 
*       "created_time": "2016-09-19T02:00:42+0000",
*       "id": "10210091520620125"
*     },
*     { 
*       "created_time": "2016-09-19T01:59:46+0000",
*       "name": "I would've went for a swim had it not been for the sign",
*       "id": "10210091522299917"
*     },
*     { 
*       "created_time": "2016-09-12T00:37:35+0000",
*       "id": "10210023316834798"
*     }
*   ],
*   "paging": { 
*     "cursors": { 
*       "before": "MTAyMTAxOTkwMjYzNDc0NTEZD",
*       "after": "MTAyMTAwMjMzMTU4MzQ3OTgZD"
*     },
*     "next": "https:\/\/graph.facebook.com\/v2.7\/10224048320139890\/photos?type=uploaded&limit=5&after=MTAyMTAwMjMzMTU4MzQ3OTgZD"
*   }
* }
* 

RELEASE loOauth2
RELEASE loRest
RELEASE loJson
RELEASE loDtime


 

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