=========================
 Subscription moderation
=========================

Subscription (and sometimes unsubscription) requests can similarly be
accepted, discarded, rejected, or deferred by the list moderators.


Viewing subscription requests
=============================

A mailing list starts with no pending subscription or unsubscription requests.

    >>> ant = create_list('ant@example.com')
    >>> ant.admin_immed_notify = False
    >>> from mailman.interfaces.mailinglist import SubscriptionPolicy
    >>> ant.subscription_policy = SubscriptionPolicy.moderate
    >>> transaction.commit()
    >>> dump_json('http://localhost:9001/3.0/lists/ant@example.com/requests')
    http_etag: "..."
    start: 0
    total_size: 0

When Anne tries to subscribe to the Ant list, her subscription is held for
moderator approval.

    >>> from mailman.interfaces.registrar import IRegistrar
    >>> from mailman.interfaces.usermanager import IUserManager
    >>> from zope.component import getUtility
    >>> registrar = IRegistrar(ant)
    >>> manager = getUtility(IUserManager)
    >>> anne = manager.create_address('anne@example.com', 'Anne Person')
    >>> token, token_owner, member = registrar.register(
    ...     anne, pre_verified=True, pre_confirmed=True)
    >>> print(member)
    None

The message is being held for moderator approval.

    >>> print(token_owner.name)
    moderator

The subscription request can be viewed in the REST API.

    >>> transaction.commit()
    >>> dump_json('http://localhost:9001/3.0/lists/ant@example.com/requests')
    entry 0:
        display_name: Anne Person
        email: anne@example.com
        http_etag: "..."
        list_id: ant.example.com
        token: ...
        token_owner: moderator
        when: 2005-08-01T07:49:23
    http_etag: "..."
    start: 0
    total_size: 1


Viewing individual requests
===========================

You can view an individual membership change request by providing the token
(a.k.a. request id).  Anne's subscription request looks like this.

    >>> dump_json('http://localhost:9001/3.0/lists/ant@example.com/'
    ...           'requests/{}'.format(token))
    display_name: Anne Person
    email: anne@example.com
    http_etag: "..."
    list_id: ant.example.com
    token: ...
    token_owner: moderator
    when: 2005-08-01T07:49:23


Disposing of subscription requests
==================================

Moderators can dispose of held subscription requests by POSTing back to the
request's resource.  The POST data requires an action of one of the following:

 * discard - throw the request away.
 * reject - the request is denied and a notification is sent to the email
            address requesting the membership change.
 * defer - defer any action on this membership change (continue to hold it).
 * accept - accept the membership change.

Anne's subscription request is accepted.

    >>> dump_json('http://localhost:9001/3.0/lists/'
    ...           'ant@example.com/requests/{}'.format(token),
    ...           {'action': 'accept'})
    content-length: 0
    date: ...
    server: ...
    status: 204

Anne is now a member of the mailing list.

    >>> ant.members.get_member('anne@example.com')
    <Member: Anne Person <anne@example.com> on ant@example.com
             as MemberRole.member>

There are no more membership change requests.

    >>> dump_json('http://localhost:9001/3.0/lists/ant@example.com/requests')
    http_etag: "..."
    start: 0
    total_size: 0