allow to delete user when it doesnt have any transaction on CMS or other apps

app/applicationlayer/management/user/views.py

@@ -47,6 +47,25 @@ class UsersManagementViewSet(viewsets.ModelViewSet):
     filter_class = table_filters.UserManagementFilter
     pagination_class = CustomPagination
 
+
+    @transaction.atomic
+    def destroy(self, request, *args, **kwargs):
+        
+        instance = self.get_object()
+        new_instance = model_to_dict(instance)
+        instance.applications.remove()
+        self.perform_destroy(instance)
+
+        log_save(
+            enums.LogEnum.DELETED.value,
+            enums.LogEntitiesEnum.USER.value,
+            new_instance['id'],
+            new_instance,
+            ''
+        )
+
+        return Response(status=status.HTTP_204_NO_CONTENT)
+
     @decorators.error_safe
     def list(self, request, *args, **kwargs):
         print(request.data['department__name'])

app/entities/migrations/0009_auto_20191001_1145.py

+# Generated by Django 2.2 on 2019-10-01 11:45
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('entities', '0008_auto_20191001_1118'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='allowedcompany',
+            name='company_pivot',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.DO_NOTHING, related_name='allowed_company_company_pivot', to='entities.Company', to_field='code'),
+        ),
+        migrations.AlterField(
+            model_name='allowedcompany',
+            name='group_pivots',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.DO_NOTHING, related_name='allowed_company_group_pivots', to='entities.Department', to_field='code'),
+        ),
+        migrations.AlterField(
+            model_name='allowedcompany',
+            name='id_number',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.DO_NOTHING, related_name='allowed_company_id_number', to=settings.AUTH_USER_MODEL, to_field='code'),
+        ),
+    ]

app/entities/migrations/0010_auto_20191001_1200.py

+# Generated by Django 2.2 on 2019-10-01 12:00
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('entities', '0009_auto_20191001_1145'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='allowedcompany',
+            name='company_pivot',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='allowed_company_company_pivot', to='entities.Company', to_field='code'),
+        ),
+        migrations.AlterField(
+            model_name='allowedcompany',
+            name='group_pivots',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='allowed_company_group_pivots', to='entities.Department', to_field='code'),
+        ),
+        migrations.AlterField(
+            model_name='allowedcompany',
+            name='id_number',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='allowed_company_id_number', to=settings.AUTH_USER_MODEL, to_field='code'),
+        ),
+        migrations.AlterField(
+            model_name='userimage',
+            name='user',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='user_images', to=settings.AUTH_USER_MODEL, to_field='code'),
+        ),
+    ]

app/entities/models.py

@@ -287,7 +287,7 @@ class UserImage(AuditClass):
         User,
         to_field='code',
         related_name='user_images',
-        on_delete=models.PROTECT
+        on_delete=models.CASCADE
     )
     name = models.CharField(blank=True, null=True, max_length=255)
     image = models.ImageField(upload_to='user_images/', null=True,
@@ -1005,7 +1005,7 @@ class PasswordReset(models.Model):
 class AllowedCompany(models.Model):
     id_number = models.ForeignKey(
         User,
-        on_delete=models.PROTECT,
+        on_delete=models.CASCADE,
         to_field='code',
         related_name='allowed_company_id_number'
     )
@@ -1013,11 +1013,11 @@ class AllowedCompany(models.Model):
         Company,
         to_field='code',
         related_name='allowed_company_company_pivot',
-        on_delete=models.PROTECT,
+        on_delete=models.CASCADE,
     )
     group_pivots = models.ForeignKey(
         Department,
-        on_delete=models.PROTECT,
+        on_delete=models.CASCADE,
         related_name='allowed_company_group_pivots',
         to_field='code'
     )