Lianja

Facebook Upload Photo from Local File

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Uploads a new photo with a caption from a local file. Lianja

llSuccess = .F.

// This example assumes Chilkat HTTP to have been previously unlocked.
// See Global Unlock Sample for sample code.

loHttp = createobject("CkHttp")

loReq = createobject("CkHttpRequest")
loReq.HttpVerb = "POST"
loReq.ContentType = "multipart/form-data"
loReq.Path = "/v2.7/me/photos"

// Use the previously obtained access token.
// Note: The publish_actions scope is required to upload a photo.
loReq.AddHeader("Authorization","Bearer FACEBOOK-ACCESS-TOKEN")

// Send an "Expect: 100-continue" header in the request.
// This causes the HTTP server to end a 100-continue response
// immediately after receiving the HTTP header.  The client
// (Chilkat) will receive this intermediate response, and if
// it's not an error response, it knows that the HTTP server will
// accept the data that is forthcoming.
// The alternative is to get an error response after trying to upload
// the entire contents of the files.
loReq.AddHeader("Expect","100-continue")

// Set a photo caption.
loReq.AddParam("caption","Here are some penguins!")

// Additional parameters can be added to the request by 
// calling AddParam once per parameter.  
// See https://developers.facebook.com/docs/graph-api/reference/user/photos
// for more information about other optional parameters.

// Indicate the local file to be uploaded.
llSuccess = loReq.AddFileForUpload("source","qa_data/jpg/penguins2.jpg")
if (llSuccess = .F.) then
    ? loReq.LastErrorText
    release loHttp
    release loReq
    return
endif

// Upload the image file..
loResp = createobject("CkHttpResponse")
llSuccess = loHttp.HttpSReq("graph.facebook.com",443,.T.,loReq,loResp)
if (llSuccess = .F.) then
    ? loHttp.LastErrorText
    release loHttp
    release loReq
    release loResp
    return
endif

// Examine the response body:
lcResponseJson = loResp.BodyStr
? lcResponseJson

// The response contains JSON, such as this:
// {"id":"10210224963435862","post_id":"10224048320139890_10210224963435862"}


release loHttp
release loReq
release loResp