Add API endpoints for Owner model

- Will be necessary for PurchaseOrder, SalesOrder and BuildOrder forms

InvenTree/users/serializers.py

@@ -1,8 +1,14 @@
+# -*- coding: utf-8 -*-
+
 from rest_framework import serializers
 from django.contrib.auth.models import User
 
+from .models import Owner
 
-class UserSerializer(serializers.HyperlinkedModelSerializer):
+from InvenTree.serializers import InvenTreeModelSerializer
+
+
+class UserSerializer(InvenTreeModelSerializer):
     """ Serializer for a User
     """
 
@@ -13,3 +19,22 @@ class UserSerializer(serializers.HyperlinkedModelSerializer):
                   'first_name',
                   'last_name',
                   'email',)
+
+
+class OwnerSerializer(InvenTreeModelSerializer):
+    """
+    Serializer for an "Owner" (either a "user" or a "group")
+    """
+
+    name = serializers.CharField(read_only=True)
+
+    label = serializers.CharField(read_only=True)
+
+    class Meta:
+        model = Owner
+        fields = [
+            'pk',
+            'owner_id',
+            'name',
+            'label',
+        ]