Re: reg: Object of type 'ListSerializer' is not JSON serializable
Wow..you nailed it brother, thank you. It solved the issue.
Regards,
Amitesh Sahay
On Monday, 8 July, 2019, 10:32:13 pm IST, Jani Tiainen
wrote:
Hi.
In your view instead of using Response(serializer) you need to use
Response(serializer.data)
HTH.
ma 8. heinäk. 2019 klo 19.48 'Amitesh Sahay' via Django users
kirjoitti:
hello Members,
I am working on some POC for django rest framework. Its very simple setup,
nothing complicated. While I was doing my testing I am facing below error:
===
TypeError at /api/status/
Object of type 'ListSerializer' is not JSON serializable
| Request Method: | GET |
| Request URL: | http://127.0.0.1:8000/api/status/ |
| Django Version: | 1.11.8 |
| Exception Type: | TypeError |
| Exception Value: | Object of type 'ListSerializer' is not JSON serializable |
| Exception Location: | /usr/lib/python3.6/json/encoder.py in default, line 180
|
| Python Executable: | /root/PycharmProjects/vrest/bin/python |
| Python Version: | 3.6.5 |
| Python Path: | ['/root/PycharmProjects/src',
'/usr/local/buildtools/current/sitecustomize',
'/usr/lib/python36.zip',
'/usr/lib/python3.6',
'/usr/lib/python3.6/lib-dynload',
'/root/PycharmProjects/vrest/lib/python3.6/site-packages'] |
| Server time: | Mon, 8 Jul 2019 16:03:26 + |
===Below are the details
:-serializers.pyfrom rest_framework import
serializers
from STATUS.models import Status
class StatusSerializer(serializers.ModelSerializer):
class Meta:
model = Status
fields = [
'user',
'content',
'image'
]
def validate_content(self, value):
if len(value) > 500:
raise serializers.ValidationError("way too long string")
def validate(self, data):
content = data.get('content', None)
if content =='':
content = None
image = data.get('image', None)
if content is None and image is None:
raise serializers.ValidationError('Required fields')
return data
models.py-from django.db import models
from django.conf import settings
def upload_status_image(instance, filename):
return "updates/{user}/{filename}" .format(user=instance.user,
filename=filename)
class StatusQuerySet(models.QuerySet):
pass
class StatusManager(models.Manager):
def get_queryset(self):
return StatusQuerySet(self.model, using=self._db)
class Status(models.Model):
user = models.ForeignKey(settings.AUTH_USER_MODEL)
content = models.TextField(null=True, blank=True)
image = models.ImageField(upload_to=upload_status_image)
updated = models.DateTimeField
timestamp = models.DateTimeField(auto_now_add=True)
objects = StatusManager()
def __str__(self):
return str(self.content)[:50]
class Meta:
verbose_name = 'status post'
verbose_name_plural = 'status posts'views.py
from django.views.generic import View
from rest_framework.views import APIView
from rest_framework.response import Response
from .serializers import StatusSerializer
from STATUS.models import Status
class StatusListSearchAPIView(APIView):
permission_classes = []
authentication_classes = []
def get(self, request, format=None):
qs = Status.objects.all()
serializer = StatusSerializer(qs, many=True)
return Response(serializer)forms.py
from django import forms
from .models import Status
class StatusForm(forms.ModelForm):
class Meta:
model = Status
fields = [
'user',
'content',
'image'
]
def clean_content(self, *args, **kwargs):
content = self.cleaned_data.get('content')
if len(content) > 240:
raise forms.ValidationError('Content is too long')
return content
def clean(self, *args, **kwargs):
data = self.cleaned_data
content = data.get('content', None)
if content == '':
content = None
image = data.get('image', None)
if content is None and image is None:
raise forms.ValidationError('Content or image is required..')
return super().clean(*args, **kwargs)app.urls.py
from django.conf.urls import url, include
from django.contrib import admin
from .views import StatusListSearchAPIView
urlpatterns = [
url(r'^$', StatusListSearchAPIView.as_view()),
#url(r'^create/$', StatusCreateAPIView.as_view()),
#url(r'^(?P.*)/$', StatusDetailAPIiew.as_view()),
#url(r'^(?P.*)/update/$', StatusUpdateAPIView.as_view()),
#url(r'^(?P.*)/update/$', StatusDeleteAPIView.as_view()),
]project.urls.py
from django.conf.urls import url, include
from django.contrib import admin
urlpatterns = [
url(r'^admin/', admin.site.urls),
url(r'api/status/', include('STATUS.API.urls')),
]Project Structure : attached with the email, if not
Re: reg: Object of type 'ListSerializer' is not JSON serializable
Hi.
In your view instead of using Response(serializer) you need to use
Response(serializer.data)
HTH.
ma 8. heinäk. 2019 klo 19.48 'Amitesh Sahay' via Django users <
django-users@googlegroups.com> kirjoitti:
> hello Members,
>
> I am working on some POC for django rest framework. Its very simple setup,
> nothing complicated. While I was doing my testing I am facing below error:
>
> ===
> TypeError at /api/status/
>
> Object of type 'ListSerializer' is not JSON serializable
>
> Request Method: GET
> Request URL: http://127.0.0.1:8000/api/status/
> Django Version: 1.11.8
> Exception Type: TypeError
> Exception Value:
>
> Object of type 'ListSerializer' is not JSON serializable
>
> Exception Location: /usr/lib/python3.6/json/encoder.py in default, line
> 180
> Python Executable: /root/PycharmProjects/vrest/bin/python
> Python Version: 3.6.5
> Python Path:
>
> ['/root/PycharmProjects/src',
> '/usr/local/buildtools/current/sitecustomize',
> '/usr/lib/python36.zip',
> '/usr/lib/python3.6',
> '/usr/lib/python3.6/lib-dynload',
> '/root/PycharmProjects/vrest/lib/python3.6/site-packages']
>
> Server time: Mon, 8 Jul 2019 16:03:26 +
> ===
> Below are the details :
> -
> serializers.py
>
> from rest_framework import serializers
> from STATUS.models import Status
>
>
> class StatusSerializer(serializers.ModelSerializer):
> class Meta:
> model = Status
> fields = [
> 'user',
> 'content',
> 'image'
> ]
>
> def validate_content(self, value):
> if len(value) > 500:
> raise serializers.ValidationError("way too long string")
>
> def validate(self, data):
> content = data.get('content', None)
> if content =='':
> content = None
> image = data.get('image', None)
> if content is None and image is None:
> raise serializers.ValidationError('Required fields')
> return data
>
>
> models.py
> -
>
> from django.db import models
> from django.conf import settings
>
>
> def upload_status_image(instance, filename):
> return "updates/{user}/{filename}" .format(user=instance.user,
> filename=filename)
>
>
> class StatusQuerySet(models.QuerySet):
> pass
>
>
> class StatusManager(models.Manager):
> def get_queryset(self):
> return StatusQuerySet(self.model, using=self._db)
>
>
> class Status(models.Model):
> user = models.ForeignKey(settings.AUTH_USER_MODEL)
> content = models.TextField(null=True, blank=True)
> image = models.ImageField(upload_to=upload_status_image)
> updated = models.DateTimeField
> timestamp = models.DateTimeField(auto_now_add=True)
>
> objects = StatusManager()
>
> def __str__(self):
> return str(self.content)[:50]
>
> class Meta:
> verbose_name = 'status post'
> verbose_name_plural = 'status posts'
>
> views.py
>
> from django.views.generic import View
> from rest_framework.views import APIView
> from rest_framework.response import Response
> from .serializers import StatusSerializer
> from STATUS.models import Status
>
>
> class StatusListSearchAPIView(APIView):
> permission_classes = []
> authentication_classes = []
>
> def get(self, request, format=None):
> qs = Status.objects.all()
> serializer = StatusSerializer(qs, many=True)
> return Response(serializer)
>
> forms.py
>
> from django import forms
> from .models import Status
>
> class StatusForm(forms.ModelForm):
> class Meta:
> model = Status
> fields = [
> 'user',
> 'content',
> 'image'
> ]
>
> def clean_content(self, *args, **kwargs):
> content = self.cleaned_data.get('content')
> if len(content) > 240:
> raise forms.ValidationError('Content is too long')
> return content
>
> def clean(self, *args, **kwargs):
> data = self.cleaned_data
> content = data.get('content', None)
> if content == '':
> content = None
>
> image = data.get('image', None)
> if content is None and image is None:
> raise forms.ValidationError('Content or image is required..')
> return super().clean(*args, **kwargs)
>
> app.urls.py
>
> from django.conf.urls import url, include
> from django.contrib import admin
> from .views import StatusListSearchAPIView
>
> urlpatterns = [
> url(r'^$', StatusListSearchAPIView.as_view()),
> #url(r'^create/$', StatusCreateAPIView.as_view()),
> #url(r'^(?P.*)/$', StatusDetailAPIiew.as_view()),
> #url(r'^(?P.*)/update/$', StatusUpdateAPIView.as_view()),
> #url(r'^(?P.*)/update/$', StatusDeleteAPIView.as_view()),
>
> ]
>
> project.urls.py
>
> from django.conf.urls import url, include
> from django.contrib import admin
>
> urlpatterns = [
>
