[Feature] 权限管理-> 远程应用 添加 api (#4040)

* [Feature] 权限管理-> 远程应用 添加 api

* [Feature] 添加 RelationMixin

apps/perms/serializers/remote_app_permission_relation.py

@@ -0,0 +1,49 @@
+#  coding: utf-8
+#
+from rest_framework import serializers
+
+from common.serializers import AdaptedBulkListSerializer
+from ..models import RemoteAppPermission
+
+
+__all__ = [
+    'RemoteAppPermissionRemoteAppRelationSerializer',
+    'RemoteAppPermissionAllRemoteAppSerializer',
+    'RemoteAppPermissionUserRelationSerializer',
+]
+
+
+class RemoteAppPermissionRemoteAppRelationSerializer(serializers.ModelSerializer):
+    remoteapp_display = serializers.ReadOnlyField()
+    remoteapppermission_display = serializers.ReadOnlyField()
+
+    class Meta:
+        model = RemoteAppPermission.remote_apps.through
+        list_serializer_class = AdaptedBulkListSerializer
+        fields = [
+            'id', 'remoteapp', 'remoteapp_display', 'remoteapppermission', 'remoteapppermission_display'
+        ]
+
+
+class RemoteAppPermissionAllRemoteAppSerializer(serializers.Serializer):
+    remoteapp = serializers.UUIDField(read_only=True, source='id')
+    remoteapp_display = serializers.SerializerMethodField()
+
+    class Meta:
+        only_fields = ['id', 'name']
+
+    @staticmethod
+    def get_remoteapp_display(obj):
+        return str(obj)
+
+
+class RemoteAppPermissionUserRelationSerializer(serializers.ModelSerializer):
+    user_display = serializers.ReadOnlyField()
+    remoteapppermission_display = serializers.ReadOnlyField()
+
+    class Meta:
+        model = RemoteAppPermission.users.through
+        list_serializer_class = AdaptedBulkListSerializer
+        fields = [
+            'id', 'user', 'user_display', 'remoteapppermission', 'remoteapppermission_display'
+        ]