Fb:fbml
From Facebook Developer Wiki
Contents |
Description
This tag serves two purposes. You can use this tag to:
- Define a block of FBML to be rendered in a specific version of FBML.
- Define a namespace to use with Custom Tags.
When using this tag with custom tags, the xmlns attribute defines a namespace for the custom tags registered by an application. Adding an xmlns attribute effectively imports the custom tags from an application into a namespace of your choice within the scope of the fb:fbml tag.
The value of the xmlns attribute must be a URL of the form "http://external.facebook.com/apps/<app_name>". The <app_name> must match the name of the registering application's name in the application's canvas URL (that is, "http://apps.facebook.com/<app_name>").
Inside fb:fbml, you can use any custom tags you registered for your application using fbml.registerCustomTags by prefixing those tags with the namespace you selected (see Examples below).
An fb:fbml tag may have more than one xmlns property, each of which defines a different namespace.
Note: You cannot create a namespace that starts with fb or f8. This keeps the Facebook FBML namespace distinct from any custom namespace.
Attributes
| Required | Name | Type | Description | |
| optional | version | float | The version of FBML with which to render the content. (Default value is [the current version].) | |
|---|---|---|---|---|
| xmlns | string | The name of the custom tag namespace. You cannot create a namespace that starts with fb or f8. You can include alphanumeric characters, underscores ("_"), and hyphens ("-").
Note: You can include multiple xmlns attributes in one fb:fbml tag. |
Examples
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In this Custom Tags example, we (the tags consumer) imported custom tags defined by the tag creator "my_movie_app" into the namespace "movies".
