Django rest framework CRUD API for model with foriegn key elements - django

Question

Okay so here I am with another problem I'm facing with Django. This time it's the REST framework.
I have a Model with Foreign Key dependencies in my project. I had to retrieve the foreign key field as an object, not just an ID field and was successful in that using Serializer Relations.
So my Serializer.py looks like:
class EventSerializer(serializers.ModelSerializer):
owner = EventUserSerializer(read_only=False)
severity = EventSeveritySerializer(read_only=False)
type = EventTypeSerializer(read_only=False)
cause = EventCauseSerializer(read_only=False)
subcause = EventSubcauseSerializer(read_only=False)
impact = EventImpactSerializer(read_only=False)
point_location = PointLocationSerializer(read_only=False)
class Meta:
model = models.Event
fields = ('id', 'description', 'owner', 'status',
'severity', 'type', 'cause', 'subcause', 'impact',
'is_public', 'occurrence_time', 'reporting_agency',
'estimated_duration', 'confirmed_timestamp',
'rejected_timestamp', 'closed_timestamp', 'point_location', )
Making a GET request, I get the result I wanted:
{
"meta": {
"count": 1,
"previous": null,
"next": null
},
"results": [
{
"id": 8,
"description": "test event 1",
"owner": {
"user": {
"id": 1,
"username": "venus",
"email": "venus.saini#ibigroup.com"
}
},
"status": "confirmed",
"severity": {
"id": 2,
"created": "2016-08-24T07:27:24.722000Z",
"modified": "2016-08-24T07:27:24.723000Z",
"name": "Severe",
"is_enabled": true,
"sortorder": 1
},
"type": {
"id": 2,
"created": "2016-08-24T07:27:45.203000Z",
"modified": "2016-08-24T07:27:45.204000Z",
"name": "Accident",
"event_category": "unplanned",
"sortorder": 2
},
"cause": {
"id": 2,
"created": "2016-08-24T07:28:16.088000Z",
"modified": "2016-08-24T07:28:16.092000Z",
"name": "Whether Conditions",
"sortorder": 3,
"event_type": 2
},
"subcause": {
"id": 2,
"created": "2016-08-24T07:28:28.475000Z",
"modified": "2016-08-24T07:28:28.478000Z",
"name": "Slippery",
"display_name": "Slippery",
"sortorder": 4,
"cause": 2
},
"impact": {
"id": 2,
"created": "2016-08-24T07:28:40.599000Z",
"modified": "2016-08-24T07:28:40.599000Z",
"name": "All Lanes Blocked",
"sortorder": 5
},
"is_public": false,
"occurrence_time": "2016-08-25T06:34:13Z",
"reporting_agency": "",
"estimated_duration": null,
"confirmed_timestamp": "2016-08-25T06:34:15Z",
"rejected_timestamp": "2016-08-25T06:34:16Z",
"closed_timestamp": "2016-08-25T06:34:18Z",
"point_location": {
"id": 2,
"created": "2016-08-24T07:18:03.017000Z",
"modified": "2016-08-24T07:18:03.018000Z",
"roadway_name": "Northbound",
"direction": "North",
"is_primary": false,
"cross_street_name": "test street 1",
"offset": "After",
"distance": 3,
"is_forward": false
}
}]
}
The problem I face is while using the POST request. I don't know how that would work so I found this link. It looks like it has the solution; I mean this is exactly what I want to accomplish [passing the ID of the foreign key element makes the object entry]. But I keep getting random errors like super(BaseSerializer, self).__init__(**kwargs) TypeError: __init__() got an unexpected keyword argument 'is_relation'.
Can somebody please guide me to how I should be doing it? I'm using Postman to test my APIs.
Thanks in advance.
EDIT: Using PUT/POST without the CustomSerializer gives me error 415:
{
"detail": "Unsupported media type \"text/plain;charset=UTF-8\" in request."
}