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django rest framework lookup_field durch OneToOneField

https://Gist.github.com/ranman/3d97ea9054c984bca75d

Gewünschtes Verhalten
Die Suche des Benutzers erfolgt anhand des Benutzernamens: /api/users/randall
Die Suche nach Sprechern erfolgt ebenfalls über den Benutzernamen: /api/speakers/randall

Einschränkungen
Nicht alle Benutzer sind Sprecher. Alle Referenten sind Benutzer.

models.py 

from Django.contrib.auth.models import User

class Speaker(models.Model):
    user = models.OneToOneField(User)

serializers.py 

class UserSerializer(serializers.HyperlinkedModelSerializer):
    class Meta:
        model = User
        fields = ('url', 'username', 'email', 'groups')
        lookup_field = 'username'

class SpeakerSerializer(serializers.HyperlinkedModelSerializer):
    user = serializers.HyperlinkedRelatedField(
        view_name='user-detail',
        read_only=True,
        lookup_field='username'
    )
    class Meta:
        model = Speaker
        lookup_field = 'user'

views.py 

class UserViewSet(viewsets.ModelViewSet):
    queryset = User.objects.all()
    serializer_class = UserSerializer
    lookup_field = 'username'

class SpeakerViewSet(viewsets.ModelViewSet):
    queryset = Speaker.objects.all().select_related('user')
    serializer_class = SpeakerSerializer
    lookup_field = "user"

Ich habe verschiedene Aufrufe von Lookup_field- und Serialisierertypen ausprobiert, damit dies nicht funktioniert. Ohne viel mehr Code ist dies möglicherweise nicht möglich. Ich frage mich nur, in welche Richtung ich gehen kann.

Vielen Dank!

pythondjangorestdjango-rest-framework
13
Randall Hunt

So habe ich es geschafft, es zu hacken

models.py

from Django.db import models    
from Django.contrib.auth.models import User

class Speaker(models.Model):
    user = models.OneToOneField(User)

    @property
    def user__username(self):
        return self.user.username

    def __unicode__(self):
        return self.user.username

serializers.py

from .models import Speaker
from rest_framework import serializers
from Django.contrib.auth.models import User

class UserSerializer(serializers.HyperlinkedModelSerializer):
    class Meta:
        model = User
        fields = ('url', 'username', 'email', 'groups')
        lookup_field = 'username'

class SpeakerSerializer(serializers.HyperlinkedModelSerializer):
    user = serializers.HyperlinkedRelatedField(
        view_name='user-detail',
        read_only=True,
        lookup_field='username'
    )
    class Meta:
        model = Speaker
        fields = ('url', 'user')
        lookup_field = 'user__username'

view.py

from .models import Speaker
from .serializers import SpeakerSerializer, UserSerializer

from rest_framework import viewsets
from Django.contrib.auth.models import User

class UserViewSet(viewsets.ModelViewSet):
    queryset = User.objects.all()
    serializer_class = UserSerializer
    lookup_field = 'username'

class SpeakerViewSet(viewsets.ModelViewSet):
    queryset = Speaker.objects.all().select_related('user')
    serializer_class = SpeakerSerializer
    lookup_field = 'user__username'
7
Todor

Hast du diesen Ansatz ausprobiert?

class SpeakerViewSet(viewsets.ModelViewSet):
    queryset = Speaker.objects.all().select_related('user')
    serializer_class = SpeakerSerializer
    filter_backends = (filters.DjangoFilterBackend,)
    filter_fields = ('user', 'user__username',)
0
mariodev