Add possibility to specify recipient model

Author: rubickcz

docs/configuration.rst

@@ -25,6 +25,11 @@ You can configure the library in Django settings. Following options are availabl
 
     Import path to a receiver class.
 
+* ``PYNOTIFY_RECIPIENT_MODEL`` (default: ``settings.AUTH_USER_MODEL``)
+
+    Model used for recipient's foreign key on ``Notification`` model. Please note, that if you change this setting after
+    initial migration has been aplied, you must migrate the model manually.
+
 * ``PYNOTIFY_RELATED_OBJECTS_ALLOWED_ATTRIBUTES`` (default: ``{'get_absolute_url', }``)
 
     A set of related object's attributes that can be used in notification template(s).

pynotify/config.py

@@ -11,6 +11,7 @@ class Settings:
         'CELERY_TASK': 'pynotify.tasks.notification_task',
         'ENABLED': True,
         'RECEIVER': 'pynotify.receivers.SynchronousReceiver',
+        'RECIPIENT_MODEL': django_settings.AUTH_USER_MODEL,
         'RELATED_OBJECTS_ALLOWED_ATTRIBUTES': {'get_absolute_url', },
         'STRIP_HTML': False,
         'TEMPLATE_CHECK': False,

pynotify/migrations/0001_initial.py

@@ -1,16 +1,17 @@
 # Generated by Django 2.2rc1 on 2019-03-20 11:24
 
-from django.conf import settings
 from django.db import migrations, models
 import django.db.models.deletion
 
+from pynotify.config import settings
+
 
 class Migration(migrations.Migration):
 
     initial = True
 
     dependencies = [
-        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        migrations.swappable_dependency(settings.RECIPIENT_MODEL),
         ('contenttypes', '0002_remove_content_type_name'),
     ]
 
@@ -24,7 +25,7 @@ class Migration(migrations.Migration):
                 ('is_read', models.BooleanField(default=False, verbose_name='is read')),
                 ('is_triggered', models.BooleanField(default=False, verbose_name='is triggered')),
                 ('recipient', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE,
-                                                related_name='notifications', to=settings.AUTH_USER_MODEL,
+                                                related_name='notifications', to=settings.RECIPIENT_MODEL,
                                                 verbose_name='recipient')),
             ],
             options={

pynotify/models.py

@@ -187,7 +187,7 @@ class Notification(BaseModel, metaclass=NotificationMeta):
         extra_data: JSON serialized dictionary with extra data.
     """
     recipient = models.ForeignKey(
-        django_settings.AUTH_USER_MODEL,
+        settings.RECIPIENT_MODEL,
         related_name='notifications',
         on_delete=models.CASCADE,
         verbose_name=_l('recipient'),

setup.py

@@ -14,7 +14,7 @@
 requirements = [
     'beautifulsoup4 ~=4.8.0',
     'celery >= 4.2.0',
-    'django >= 2.2',
+    'django ~= 2.2',
     'django-chamber ~= 0.5.0',
     'lxml ~= 4.5.0',
 ]