Ruby Requires Chilkat v11.0.0+

Facebook Upload Photo from Local File

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

require 'chilkat'

success = false

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

http = Chilkat::CkHttp.new()

req = Chilkat::CkHttpRequest.new()
req.put_HttpVerb("POST")
req.put_ContentType("multipart/form-data")
req.put_Path("/v2.7/me/photos")

#  Use the previously obtained access token.
#  Note: The publish_actions scope is required to upload a photo.
req.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.
req.AddHeader("Expect","100-continue")

#  Set a photo caption.
req.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.
success = req.AddFileForUpload("source","qa_data/jpg/penguins2.jpg")
if (success == false)
    print req.lastErrorText() + "\n";
    exit
end

#  Upload the image file..
resp = Chilkat::CkHttpResponse.new()
success = http.HttpSReq("graph.facebook.com",443,true,req,resp)
if (success == false)
    print http.lastErrorText() + "\n";
    exit
end

#  Examine the response body:
responseJson = resp.bodyStr()
print responseJson + "\n";

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