min_ip, max_ip fields erroring despite being specified via JSON REST API

[wrouesnel]

As of commit 4794c4c I'm having a problem where the JSON rest API won't let me create networks - https://22.0.0.2/api/networks/ (docker container instance of Ralph)
a request sent to

{
   "name":"test3",
   "address":"2.0.0.0/8",
   "remarks":"",
   "vlan":1,
   "dhcp_broadcast":false,
   "reserved_from_beginning":0,
   "reserved_from_end":0,
   "gateway":null,
   "network_environment":null,
   "kind":null,
   "service_env":null,
   "terminators":[

   ],
   "racks":[

   ],
   "dns_servers":[

   ],
   "min_ip":16777216,
   "max_ip":33554431
}

produces the following result:

{
  "min_ip": [
    "This field is required."
  ],
  "max_ip": [
    "This field is required."
  ]
}

This seems to be a known issue with Django REST API, and is possibly a result of min_ip and max_ip being set as non-editable in the model?

The same request works via the form request mechanism.

[wrouesnel]

Traced this down a little - I can remediate by setting the min_ip and max_ip fields to be editable in the network.py model file - whatever I try to set is ignored (but still required to be present) but the code actually gets to the save handler now (which is where the override happens).

[wrouesnel]

Found it - the problem is here:

ralph/src/ralph/networks/models/networks.py

Line 400 in 4794c4c

unique_together = ('min_ip', 'max_ip')

The unique_together constraint enforces a required constraint for all its arguments on any attached serializer (see here: http://www.django-rest-framework.org/api-guide/validators/#uniquetogethervalidator).