(Ruby) Facebook Upload Photo from Local File

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

Chilkat Ruby Downloads install from rubygems.org gem install chilkat or download... Ruby Library for Windows, MacOS, Linux, Alpine Linux

require 'chilkat'

# 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 != true)
    print req.lastErrorText() + "\n";
    exit
end

# Upload the image file..
# resp is a CkHttpResponse
resp = http.SynchronousRequest("graph.facebook.com",443,true,req)
if (http.get_LastMethodSuccess() != true)
    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"}