From fa81652de504c064f4e199718c22b9be6d688c7b Mon Sep 17 00:00:00 2001
From: Michael Bai <baijiangjie@gmail.com>
Date: Fri, 10 Sep 2021 12:53:51 +0800
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---
 .../migrations/0020_auto_20210910_1103.py     | 24 +++++++++++++++++++
 apps/perms/models/application_permission.py   |  3 ++-
 apps/perms/models/asset_permission.py         |  2 +-
 3 files changed, 27 insertions(+), 2 deletions(-)
 create mode 100644 apps/perms/migrations/0020_auto_20210910_1103.py

diff --git a/apps/perms/migrations/0020_auto_20210910_1103.py b/apps/perms/migrations/0020_auto_20210910_1103.py
new file mode 100644
index 000000000..0d01345f5
--- /dev/null
+++ b/apps/perms/migrations/0020_auto_20210910_1103.py
@@ -0,0 +1,24 @@
+# Generated by Django 3.1.12 on 2021-09-10 03:03
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('assets', '0076_delete_assetuser'),
+        ('perms', '0019_auto_20210906_1044'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='assetpermission',
+            name='system_users',
+            field=models.ManyToManyField(blank=True, related_name='granted_by_permissions', to='assets.SystemUser', verbose_name='System user'),
+        ),
+        migrations.AlterField(
+            model_name='applicationpermission',
+            name='system_users',
+            field=models.ManyToManyField(blank=True, related_name='granted_by_application_permissions', to='assets.SystemUser', verbose_name='System user'),
+        ),
+    ]
diff --git a/apps/perms/models/application_permission.py b/apps/perms/models/application_permission.py
index a405e667c..40ac61ed8 100644
--- a/apps/perms/models/application_permission.py
+++ b/apps/perms/models/application_permission.py
@@ -27,7 +27,8 @@ class ApplicationPermission(BasePermission):
         verbose_name=_("Application")
     )
     system_users = models.ManyToManyField(
-        'assets.SystemUser', related_name='granted_by_application_permissions',
+        'assets.SystemUser',
+        related_name='granted_by_application_permissions', blank=True,
         verbose_name=_("System user")
     )
 
diff --git a/apps/perms/models/asset_permission.py b/apps/perms/models/asset_permission.py
index f763bee10..78e6b9b5b 100644
--- a/apps/perms/models/asset_permission.py
+++ b/apps/perms/models/asset_permission.py
@@ -98,7 +98,7 @@ class Action:
 class AssetPermission(BasePermission):
     assets = models.ManyToManyField('assets.Asset', related_name='granted_by_permissions', blank=True, verbose_name=_("Asset"))
     nodes = models.ManyToManyField('assets.Node', related_name='granted_by_permissions', blank=True, verbose_name=_("Nodes"))
-    system_users = models.ManyToManyField('assets.SystemUser', related_name='granted_by_permissions', verbose_name=_("System user"))
+    system_users = models.ManyToManyField('assets.SystemUser', related_name='granted_by_permissions', blank=True, verbose_name=_("System user"))
     actions = models.IntegerField(choices=Action.DB_CHOICES, default=Action.ALL, verbose_name=_("Actions"))
 
     class Meta: