add new fields to rancher

apps/pos_device/mixins/pos_device_mixin.py

@@ -0,0 +1,34 @@
+import typing
+from apps.pos_device import models as pos_models
+
+
+class POSDeviceMixin:
+    """ get require objects with values in request header """
+
+    def get_pos_device(self):
+        """ get device object by device serial in request header """
+
+        device = pos_models.Device.objects.get(
+            serial=self.request.headers.get('device-serial')  # noqa
+        )
+
+        return device
+
+    def get_device_organization(self):
+        """ get device owner (organization) information """
+
+        organization = pos_models.DeviceAssignment.objects.filter(
+            device__serial=self.request.headers.get('device-serial')  # noqa
+        ).first().organization
+
+        return organization
+
+    def get_provider_organization(self):
+        """ get pos provider organization """
+
+        provider = pos_models.Organization.objects.get(
+            en_name=self.request.headers.get('device-provider')  # noqa
+        )
+
+        return provider
+