Fb:request-form-submit
From Facebook Developer Wiki
Description
Creates a button that submits an fb:request-form. Use this along with any combination of fb:multi-friend-input or fb:friend-selector tags inside an fb:request-form if you would like to have the user send a request or invitation. When this button is clicked, a confirmation dialog appears that allows the user to confirm the sending of the request or invitations.
You can also use a single user ID as the label for the button. This means that instead of using other elements in the fb:request-form, the button results in a request being sent to the user that you specify for the label.
Note: When using a user ID as the button label, the user ID must belong to a friend of the current user. Using either the user ID of the current user or a user ID that does not belong to a friend of the current user results in a dialog with a message of "Please select some friends first" when the button is clicked. (see bug)
Attributes
| Required | Name | Type | Description | |
| optional | uid | int | Set this to the user ID of a person you would like a request to be sent to. | |
|---|---|---|---|---|
| label | string | If you are using uid, use this tag to specify the text you want to appear as the label for the button. The text must include "%n" or "%N" which gets replaced with the first name or full name for the user ID, respectively. |
