Posting to Facebook without a link

Question

I'm working on an API to allow posting to Facebook, using Graph API over REST, sending HTTP post requests to https://graph.facebook.com/me/feed (after succesful OAuth2 auth).

I can specify message and link and it posts the link, (but with message ignored?), and I can also include name, caption and description to get those elements handled - so links are ok.

If I use just message or just picture, I get the error:

(#100) Missing message or attachment

If I use message and picture, it posts the message, without any picture. (Which is useful, but not intended behaviour?)

The only way I can get the picture seems to be as a link (which includes it as a thumbnail).

I've looked through the docs but can't find any useful info on this - all the examples are showing links.

My main question is: What is the intended way to post a message without a picture or link?

But it'd also be useful to know if there's a way to post a picture to the wall? (non-thumbnail, with lightbox)

Answer 1

The actual code is more complex, but simplified here to demonstrate the issue.

This was failing:

<cfhttp
    result = "local.Response"
    method = "post"
    url    = #Arguments.Url#
    >
    <cfhttpparam type="url" name="Message" value="#Arguments.Message#" />
</cfhttp>

This worked:

<cfset Arguments.Url &= '&message=' & encodeForUrl(Arguments.Message) />

<cfhttp
    result = "local.Response"
    method = "post"
    url    = #Arguments.Url#
    >
    <cfhttpparam type="url" name="dummy" value="ignore" />
</cfhttp>

(The dummy cfhttpparam is because CF complains if a POST request doesn't contain at least one param.)