add application to data json

apps/crud/models.py

@@ -16,5 +16,11 @@ class Data(models.Model):
     plan = models.ForeignKey(Plan, on_delete=models.PROTECT)
     data = models.JSONField(default=dict)
 
+    @property
+    def application(self):
+        return str(self.plan.application.uuid)
+
     class Meta:
         unique_together = ('user', 'plan')
+
+

apps/crud/serializers.py

@@ -5,8 +5,10 @@ from .models import Data, Plan
 class DataSerializer(serializers.ModelSerializer):
     class Meta:
         model = Data
-        fields = ('user',
+        fields = (
-                  'data',
+            'application',
-                  )
+            'user',
+            'data',
+        )
 
         read_only_fields = ['user']