[PATCH] Allow custom REST-like methods in RestController

[lento]

This allows to have a consistent API in case you have custom methods in your RestController, exposing them the same way as the default REST verbs.

For example you can define get_archive() and post_archive() in your "movies" controller from the moviedemo example:

    custom_actions = ['archive']

    @expose('moviedemo.templates.forms.form')
    def get_archive(self, movie_id, **kwargs):
        """Display a ARCHIVE confirmation form."""

    @expose('moviedemo.templates.forms.result')
    def post_archive(self, movie_id):
        """Archive a movie"""

or just

    custom_actions = ['archive']

    @expose('moviedemo.templates.forms.result')
    def archive(self, movie_id):
        """Archive a project"""

and use them like this:

GET /movies/1/archive

POST /movies/1?_method=ARCHIVE

[jorge.vargas]

This patch looks good.

[percious]

implemented in  http://bitbucket.org/turbogears/tg-dev/changeset/39da27c2c339/ (2.1b2 release) uses _custom_actions instead of custom_actions for the attribute. Needs to be documented. Tests have been added for the use case.