Filter Action Error: Field 'actor' does not generate an automatic reverse relation and therefore cannot be used for reverse querying.

Hey every one (@justquick),

I have a django app and now I want to introduce django-activity-stream to notify users from events.

My issue is that I can not filter actions by actor or target:

python3.5 shell

>>> from app import models
>>> a = models.MyAppUser.objects.all()[1]
>>> a
<MyAppUser: Mark>
>>> t = models.MyAppUser.objects.all()[2]
>>> t
<MyAppUser: Steve>
>>> from actstream.models import Action
>>> Action(actor=a, verb='POST', target=t)
<Action: Mark POST Steve 0 minutes ago>
>>> Action.objects.filter(actor=a)

Error:

Traceback (most recent call last):
  File "/.../lib/python3.5/site-packages/django/core/management/commands/shell.py", line 69, in handle
    self.run_shell(shell=options['interface'])
  File "/.../lib/python3.5/site-packages/django/core/management/commands/shell.py", line 61, in run_shell
    raise ImportError
ImportError

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "/.../lib/python3.5/site-packages/django/db/models/manager.py", line 122, in manager_method
    return getattr(self.get_queryset(), name)(*args, **kwargs)
  File "/.../lib/python3.5/site-packages/django/db/models/query.py", line 790, in filter
    return self._filter_or_exclude(False, *args, **kwargs)
  File "/.../lib/python3.5/site-packages/django/db/models/query.py", line 808, in _filter_or_exclude
    clone.query.add_q(Q(*args, **kwargs))
  File "/.../lib/python3.5/site-packages/django/db/models/sql/query.py", line 1243, in add_q
    clause, _ = self._add_q(q_object, self.used_aliases)
  File "/.../lib/python3.5/site-packages/django/db/models/sql/query.py", line 1269, in _add_q
    allow_joins=allow_joins, split_subq=split_subq,
  File "/.../lib/python3.5/site-packages/django/db/models/sql/query.py", line 1149, in build_filter
    lookups, parts, reffed_expression = self.solve_lookup_type(arg)
  File "/.../lib/python3.5/site-packages/django/db/models/sql/query.py", line 1035, in solve_lookup_type
    _, field, _, lookup_parts = self.names_to_path(lookup_splitted, self.get_meta())
  File "/.../lib/python3.5/site-packages/django/db/models/sql/query.py", line 1316, in names_to_path
    "adding a GenericRelation." % name

django.core.exceptions.FieldError: Field 'actor' does not generate an automatic 
reverse relation and therefore cannot be used for reverse querying. 
If it is a GenericForeignKey, consider adding a GenericRelation.

The output of my pip freeze is:

app==0.0.1
coverage==4.2
dj-database-url==0.4.1
**Django==1.9.5**
**django-activity-stream==0.6.3**
django-anymail==0.5
django-bootstrap-breadcrumbs==0.8
django-bootstrap-datepicker==1.1.1
django-bootstrap3==7.1.0
django-bower==5.1.0
django-configurations==2.0
django-debug-toolbar==1.5
django-formtools==1.0
django-nose==1.4.4
django-postman==3.3.2
factory-boy==2.7.0
fake-factory==0.7.2
flake8==3.0.4
mccabe==0.5.2
nose==1.3.7
Pillow==3.3.1
psycopg2==2.6.2
pycodestyle==2.0.0
pyflakes==1.2.3
python-dateutil==2.6.0
PyYAML==3.12
requests==2.11.1
rollbar==0.13.6
six==1.10.0
sqlparse==0.2.1
whitenoise==3.2.1

Similar like issue 281

[akshay-soni]

This could work - Action.objects.filter(actor_object_id__in=user_queryset.values_list(‘id’, flat=True))

[abubakarA-Dot]

when I try to implement this logic to display the activity stream on the home/user dashboard page:

    ```
    current_user = User.objects.get(id =request.user.id)
    network = AddToNetwork.objects.filter(network_status = 'ADD')
    actions = Action.objects.filter(verb='sent you a network request', actor=current_user, target=network)
    print("\n Actor message :", actions)
    ```

it throws the following error:

Field ‘actor’ does not generate an automatic reverse relation and therefore cannot be used for reverse querying. If it is a GenericForeignKey, consider adding a GenericRelation.