Add model to the /network/interfaces endpoint

This is not super clean. The model and device_type belong to the host.
This is for easy access from the API.
But it would be better to have a "expand=true" query parameter and return the
host as a dict.

JIRA INFRA-414

app/models.py

@@ -958,8 +958,10 @@ class Interface(CreatedMixin, db.Model):
         )
         if self.host:
             d["device_type"] = str(self.host.device_type)
+            d["model"] = utils.format_field(self.host.model)
         else:
             d["device_type"] = None
+            d["model"] = None
         return d
 
 

tests/functional/test_api.py

@@ -914,6 +914,17 @@ def test_get_interfaces_by_domain(
     check_input_is_subset_of_response(response, (interface3.to_dict(),))
 
 
+def test_get_interfaces_with_model(
+    client, model_factory, item_factory, host_factory, interface_factory, readonly_token
+):
+    host1 = host_factory()
+    model1 = model_factory(name="EX3400")
+    item_factory(model=model1, host_id=host1.id)
+    interface_factory(host_id=host1.id)
+    response = get(client, f"{API_URL}/network/interfaces", token=readonly_token)
+    assert response.json[0]["model"] == "EX3400"
+
+
 def test_create_interface(client, network_factory, user_token):
     network = network_factory(
         address="192.168.1.0/24", first_ip="192.168.1.10", last_ip="192.168.1.250"
@@ -950,6 +961,7 @@ def test_create_interface(client, network_factory, user_token):
         "domain",
         "host",
         "device_type",
+        "model",
         "cnames",
         "tags",
         "created_at",