Django REST - send multiple querysets in one GET-Response - django

Question

My view currently accepts a username and if the user exists it sends back a queryset of all entries in a Model, where the corresponding userid fits.
The Model UserProject consists of a UserID and a ProjectID, both are references to their own tables.
I would like to add the Project Model to the queryset.
my view:
class GetUserDataByNameView(
APIView,
):
def get(self, request, username):
if User.objects.filter(username = username).exists():
uid = User.objects.get(username = username).id
queryset = Userproject.objects.filter(user_id = uid)
readSerializer = UserprojectSerializer(queryset, many = True)
return Response(readSerializer.data)
else:
return Response({"status": "error", "data":"no user with this username"}, status = 200)
the Response currently looks like this:
[
{
"id": 16,
"created_at": "2021-10-20T16:05:03.757807Z",
"updated_at": "2021-10-20T16:05:03.762307Z",
"user": 3,
"project": 50
},
{
"id": 17,
"created_at": "2021-10-20T16:27:59.938422Z",
"updated_at": "2021-10-20T16:27:59.945439Z",
"user": 3,
"project": 51
#"projectname": (from ProjectID 51)
#"projectDescriptor":
#" other stuff from ProjectModel":
}
]
So how would I insert the fields for the current Project ?
If I did some useless stuff in the code, please tell me. Newbie in Django
serializer:
from rest_framework import serializers
from .models import Project
from .models import Userproject
class ProjectSerializer(serializers.ModelSerializer):
name = serializers.CharField(max_length = 500, required = True)
descriptor = serializers.CharField(max_length = 1000, default = None)
class Meta:
model = Project
fields = '__all__'
class UserprojectSerializer(serializers.ModelSerializer):
class Meta:
model = Userproject
fields = '__all__'
models:
from django.db import models
from django.contrib.auth.models import User
# Create your models here.
class Project(models.Model):
id = models.AutoField(db_column = 'db_ID', primary_key = True)
name = models.CharField(max_length=500, default = None)
descriptor = models.CharField(max_length = 1000, null = True)
created_at = models.DateTimeField(auto_now_add=True)
updated_at = models.DateTimeField(auto_now=True)
class Meta:
db_table = 'projects'
def __str__(self):
return self.name
class Userproject(models.Model):
id = models.AutoField(db_column = 'db_ID', primary_key = True)
user = models.ForeignKey(User, on_delete= models.SET_NULL, null = True)
project = models.ForeignKey('Project', on_delete = models.SET_NULL, null = True)
created_at = models.DateTimeField(auto_now_add=True, null=True)
updated_at = models.DateTimeField(auto_now=True, null = True)
class Meta:
db_table = 'UserProjects'
def __str__(self):
return self.id

Answer 1

class UserprojectSerializer(serializers.ModelSerializer):
projects = ProjectSerializer(many=True, read_only=True)
class Meta:
model = Userproject
fields = ['projects','id','user',]
You need to pass the Project data to your UserProject Serializer, also I have mentioned many=True because User is connected to ForeignKey so a user can have multiple projects.
class ProjectSerializer(serializers.ModelSerializer):
name = serializers.CharField(max_length = 500, required = True)
descriptor = serializers.CharField(max_length = 1000, default = None)
class Meta:
model = Project
fields = ['name','descriptor']