Advanced options

Moderation registration options

moderation.register takes following parameters:

Model class that will be registered with moderation

Class that subclasses GenericModerator class. It Encapsulates moderation options for a given model. Example:

from moderation.moderator import GenericModerator

class UserProfileModerator(GenericModerator):
    notify_user = False
    auto_approve_for_superusers = True

moderation.register(UserProfile, UserProfileModerator)

GenericModerator options

By default moderation stores objects pending moderation in the changed_object field in the object’s corresponding ModeratedObject instance. If visible_until_rejected is set to True, objects pending moderation will be stored in their original model as usual and the most recently approved version of the object will be stored in changed_object. Default: False
List of manager names on which moderation manager will be enabled. Default: [‘objects’]
Default manager class that will enabled on model class managers passed in manager_names. This class takes care of filtering out any objects that are not approved yet. Default: ModerationObjectsManager
If you want a performance boost, define visibility field on your model and add option visibility_column = 'your_field' on moderator class. Field must by a BooleanField. The manager that decides which model objects should be excluded when it were rejected, will first use this option to properly display (or hide) objects that are registered with moderation. Use this option if you can define visibility column in your model and want to boost performance. This method benefits those who can add fields to their models. Default: None.
Fields to exclude from object change list. Default: []
Display related object’s string representation instead of their primary key. Default: True
Auto approve objects changed by superusers. Default: True
Auto approve objects changed by user that are staff. Default: True
List of user group names that will be auto approved. Default: None
Auto reject objects changed by users that are anonymous. Default: True
List of user group names that will be auto rejected. Default: None
When set to True, affected objects will be released from the model moderator’s control upon initial approval. This is useful for models in which you want to avoid unnecessary repetition of potentially expensive auto-approve/reject logic upon each object edit. This cannot be used for models in which you would like to approve (auto or manually) each object edit, because changes are not tracked and the moderation logic is not run. If the object needs to be entered back into moderation you can set its status to “Pending” by unapproving it. Default: False
When set to True this will allow multiple moderations per registered model instance. Otherwise there is only one moderation per registered model instance. Default: False.
Defines if notification e-mails will be send to moderator. By default when user change object that is under moderation, e-mail notification is send to moderator. It will inform him that object was changed and need to be moderated. Default: True
Defines if notification e-mails will be send to user. When moderator approves or reject object changes then e-mail notification is send to user that changed this object. It will inform user if his changes were accepted or rejected and inform him why it was rejected or approved. Default: True
Subject template that will be used when sending notifications to moderators. Default: moderation/notification_subject_moderator.txt
Message template that will be used when sending notifications to moderator. Default: moderation/notification_message_moderator.txt
Subject template that will be used when sending notifications to users. Default: moderation/notification_subject_user.txt
Message template that will be used when sending notifications to users. Default: moderation/notification_message_user.txt
Notes on auto moderation

If you want to use auto moderation in your views, then you need to save user object that has changed the object in ModeratedObject instance. You can use following helper. Example:


new_profile = UserProfile()

from moderation.helpers import automoderate

automoderate(new_profile, user)
Custom auto moderation

If you want to define your custom logic in auto moderation, you can overwrite methods: is_auto_reject or is_auto_approve of GenericModerator class


class MyModelModerator(GenericModerator):

    def is_auto_reject(self, obj, user):
        # Auto reject spam
        if akismet_spam_check(obj.body):  # Check body of object for spam
            # Body of object is spam, moderate
            return self.reason('My custom reason: SPAM')
        super(MyModelModerator, self).is_auto_reject(obj, user)

moderation.register(MyModel, MyModelModerator)

Default context of notification templates

Default context:

content type object of moderated object
ModeratedObject instance
current Site instance

How to pass extra context to email notification templates

Subclass GenericModerator class and overwrite inform_moderator and inform_user methods.:

class UserProfileModerator(GenericModerator):

    def inform_moderator(self,
        '''Send notification to moderator'''
        super(UserProfileModerator, self).inform_moderator(content_object,

    def inform_user(self, content_object, user, extra_context=None)
        '''Send notification to user when object is approved or rejected'''
        super(CustomModerationNotification, self).inform_user(content_object,

moderation.register(UserProfile, UserProfileModerator)


If you have defined your own save_model method in your ModelAdmin then you must:

# Custom save_model in MyModelAdmin
def save_model(self, request, obj, form, change):
    # Your custom stuff
    from moderation.helpers import automoderate
    automoderate(obj, request.user)

Otherwise what you save in the admin will get moderated and automoderation will not work.

Message backend

By default the message backend used for sending notifications is moderation.message_backends.EmailMessageBackend, which is trigger a synchronous task on the main thread and call the django.core.mail.send_mail method.

You can write your own message backend class by subclassing moderation.message_backends.BaseMessageBackend, in order to use another api to send your notifications (Celery, RabbitMQ, …).

Example of a custom message backend

class CustomMessageBackend(object):

    def send(self, **kwargs):
        subject = kwargs.get('subject', None)
        message = kwargs.get('message', None)
        recipient_list = kwargs.get('recipient_list', None)

        trigger_custom_message(subject, message, recipient_list)

Then specify the custom class in the moderator

from moderation.moderator import GenericModerator
from myproject.message_backends import CustomMessageBackend

class UserProfileModerator(GenericModerator):
    message_backend_class = CustomMessageBackend

moderation.register(UserProfile, UserProfileModerator)


moderation.signals.pre_moderation - signal send before object is approved or rejected

Arguments sent with this signal:

The model class.
Instance of model class that is moderated
Moderation status, 0 - rejected, 1 - approved

moderation.signals.post_moderation - signal send after object is approved or rejected

Arguments sent with this signal:

The model class.
Instance of model class that is moderated
Moderation status, 0 - rejected, 1 - approved


When creating ModelForms for models that are under moderation use BaseModeratedObjectForm class as ModelForm class. Thanks to that form will initialized with data from changed_object.:

from moderation.forms import BaseModeratedObjectForm

class ModeratedObjectForm(BaseModeratedObjectForm):

    class Meta:
        model = MyModel


Tuple of moderators’ email addresses to which notifications will be sent.