Django Rest Framework Post Nested Using Files with requests module example - django

Question

Excuse me, i have a problem, can anyone help me.
I have models like:
from django.db import models
from django.contrib.auth.models import User
import uuid
def uuid_generator():
return str(uuid.uuid4())
class Profile(models.Model):
user = models.OneToOneField(User, on_delete=models.CASCADE, related_name='profile_user')
mobile = models.CharField(max_length=20)
alamat = models.TextField(blank=True)
phone = models.CharField(max_length=20, blank=True)
foto = models.ImageField(upload_to='profile', blank=True)
def __str__(self):
return self.user.username
class Rumah(models.Model):
JENIS_CHOICES = (
('rumah', 'Rumah besar'),
('petakan', 'Rumah petakan'),
('apartement', 'Apartement'),
('kost', 'Kost-Kostan')
)
WAKTU_CHOICES = (
('bulanan', 'Bulanan'),
('tahunan', 'Tahunan'),
)
STATUS_CHOICES = (
('tersedia', 'Tersedia'),
('terisi', 'Sudah Terisi'),
('ditutup', 'Di Tutup'),
)
pemilik = models.ForeignKey(User, on_delete=models.CASCADE, related_name='rumah_user')
kode = models.CharField(unique=True, max_length=150)
jenis = models.CharField(max_length=12, choices=JENIS_CHOICES, default='rumah')
waktu = models.CharField(max_length=10, choices=WAKTU_CHOICES, default='bulanan')
harga = models.PositiveIntegerField()
alamat = models.TextField()
status = models.CharField(max_length=10, choices=STATUS_CHOICES, default='tersedia')
keterangan = models.TextField(blank=True)
def __str__(self):
return self.kode
def save(self, *args, **kwargs):
self.kode = uuid_generator()
super(Rumah, self).save(*args, **kwargs)
class Foto(models.Model):
rumah = models.ForeignKey(Rumah, on_delete=models.CASCADE, related_name='foto_rumah')
penampakan = models.ImageField(upload_to='penampakan', blank=True)
keterangan = models.TextField(blank=True)
def __str__(self):
return self.rumah.kode
Note: Rumah like House in english and Foto like Picture in english.
I have a views like:
from django.contrib.auth.models import User
from produk.models import Profile, Rumah, Foto
from .serializers import UserSerializer, ProfileSerializer, RumahSerializer, FotoSerializer
from .permissions import IsOwnerOrReadOnly, IsHasProfile, IsRumahOrReadOnly
from rest_framework import mixins
from rest_framework import generics
from rest_framework import permissions
class UserList(generics.ListAPIView):
queryset = User.objects.all()
serializer_class = UserSerializer
class UserDetail(generics.RetrieveAPIView):
queryset = User.objects.all()
serializer_class = UserSerializer
class ProfileList(generics.ListCreateAPIView):
queryset = Profile.objects.all()
serializer_class = ProfileSerializer
permission_classes = (permissions.IsAuthenticatedOrReadOnly,)
def perform_create(self, serializer):
serializer.save(user=self.request.user)
class ProfileDetail(generics.RetrieveUpdateDestroyAPIView):
permission_classes = (permissions.IsAuthenticatedOrReadOnly, IsOwnerOrReadOnly)
queryset = Profile.objects.all()
serializer_class = ProfileSerializer
class RumahList(generics.ListCreateAPIView):
queryset = Rumah.objects.all()
serializer_class = RumahSerializer
permission_classes = (permissions.IsAuthenticatedOrReadOnly,)
def perform_create(self, serializer):
serializer.save(pemilik=self.request.user)
class RumahDetail(generics.RetrieveUpdateDestroyAPIView):
queryset = Rumah.objects.all()
serializer_class = RumahSerializer
permission_classes = (permissions.IsAuthenticatedOrReadOnly, IsOwnerOrReadOnly)
class FotoList(generics.ListCreateAPIView):
queryset = Foto.objects.all()
serializer_class = FotoSerializer
permission_classes = (permissions.IsAuthenticatedOrReadOnly,)
class FotoDetail(generics.RetrieveUpdateDestroyAPIView):
queryset = Foto.objects.all()
serializer_class = FotoSerializer
permission_classes = (permissions.IsAuthenticatedOrReadOnly, IsRumahOrReadOnly)
I have a serializers like:
from django.contrib.auth.models import User
from rest_framework import serializers
from produk.models import Profile, Rumah, Foto
class UserSerializer(serializers.HyperlinkedModelSerializer):
rumah_user = serializers.HyperlinkedRelatedField(many=True, view_name='rumah-detail', read_only=True)
profile_user = serializers.HyperlinkedRelatedField(many=False, view_name='profile-detail', read_only=True)
class Meta:
model = User
fields = ('id', 'username', 'email', 'is_active', 'rumah_user', 'profile_user')
class ProfileSerializer(serializers.ModelSerializer):
user = serializers.ReadOnlyField(source='user.username')
class Meta:
model = Profile
fields = ('id', 'user', 'alamat', 'mobile', 'phone', 'foto')
class FotoSerializer(serializers.ModelSerializer):
# rumah = serializers.ReadOnlyField(source='rumah.kode')
class Meta:
model = Foto
fields = ('id', 'rumah', 'penampakan', 'keterangan')
class RumahSerializer(serializers.ModelSerializer):
pemilik = serializers.ReadOnlyField(source='pemilik.username')
#foto_rumah = serializers.HyperlinkedRelatedField(many=True, view_name='foto-detail', read_only=True)
foto_rumah = FotoSerializer(many=True)
class Meta:
model = Rumah
fields = ('id', 'pemilik', 'jenis', 'waktu', 'harga', 'alamat', 'status', 'keterangan', 'foto_rumah')
def create(self, validated_data):
fotos_data = validated_data.pop('foto_rumah')
print(validated_data)
rumah = Rumah.objects.create(**validated_data)
for foto_data in fotos_data:
Foto.objects.create(rumah=rumah, **foto_data)
return rumah
When i try it with requests module like:
import requests
from requests.auth import HTTPBasicAuth
url = 'http://127.0.0.1:8000/rumah/'
files = {'penampakan': open('C:\\Users\\yanz\\Pictures\\Campuran\\test.png', 'rb')}
data = {
"pemilik": "admin",
"jenis": "rumah",
"waktu": "bulanan",
"harga": 3,
"alamat": "r",
"status": "tersedia",
"keterangan": "4",
"foto_rumah": [
{
"penampakan": files,
"keterangan": "a"
}
]
}
r = requests.post(url, data=data, files=files, auth=HTTPBasicAuth('admin', 'password123'))
print(r.text)
Result:
{"id":11,"pemilik":"admin","jenis":"rumah","waktu":"bulanan","harga":3,"alamat":"r","status":"tersedia","keterangan":"4","foto_rumah":[]}
Foto (foto_rumah) data from the model Foto is not saved. what's the solution ? How to post nested data with files?
Thanks...

Answer 1

Nested serializers don't work with form encoded data yet.
Uploading images only works with form encoded data out of the box.
I guess you'll need to upload images on a specific non nested entry point or use base64 encoded files within the JSON.
I remember I've seen a 3rd party about handling base64 files but can't find it again.