- Object Has No Attribute Python
- Django Serialize Dict Object Has No Attribute Metallica
- Django Serialize Dict Object Has No Attribute Meta Generator
I’m developing Django application, and I have following error
Given the following model and serializer for a Django REST framework setup: #!/usr/bin/env python # -.- coding: utf-8 -.- from django.db import models class StationReport(models.Model): waterlevel = models.IntegerField(maxlength=5, blank=False) username = models.CharField(maxlength=256, blank=False) emailaddress = models.CharField(maxlength=256, blank=True) recordedat = models. Python - Django REST framework: AttributeError: object has no attribute 'serializer' python - AttributeError: 'NoneType' object has no attribute 'defaultmanager' when running lettuce with django rest framework; python - django rest framework 'QuerySet' object has no attribute 'meta' python - 'dict' object has no attribute 'pk' Django Rest.
My models are constructed like this
What I must do?
Answers:
firstly, you must be very careful overriding
__init__
to have non-optional arguments. Black eyed peas someday knight and day free mp3 download. remember it will be called every time you get an object from a queryset!I highly suggest setting the abstract option on Animal if you will only ever be using subclasses of this object. This ensures a table is not created for animal and only for Sheep (etc.). if abstract is not set, then an Animal table will be created and the Sheep class will be given it’s own table and an automatic ‘animal’ field which will be a foreign key to the Animal model.
Answers:
Django docs recommend against you to use
__init__
method in models: You may be tempted to customize the model by overriding the
__init__
method. If you do so, however, take care not to change the calling signature as any change may prevent the model instance from being saved. Rather than overriding __init__
, try using one of these approaches:- Add a classmethod on the model class
- Add a method on a custom manager (usually preferred)
Tags: object
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i am trying to get data from django server and get this error.
my_app/urls.py:
Object Has No Attribute Python
my_app/models.py:
Corning pc 351 manual. data/views:
my_app/serializers:
Recommend:python - AttributeError: 'NoneType' object has no attribute '_default_manager' when running lettuce with django rest framework
xecute the command python manage.py harvest I get following error /rest_framework/serializers.py', line 818, in get_related_field 'queryset': related_model._default_manager,AttributeError: 'NoneType' object has no attribute '_default_m
what could be the problem? thanks
pythondjangodjango-rest-framework|
this questionedited Apr 18 '16 at 21:07RoadieRich 4,264 2 25 52 asked Apr 18 '16 at 21:03 hco 30 5 you have
return
as prefix in Response(serializer.data)
Django Serialize Dict Object Has No Attribute Metallica
on your view, right? – trinchet Apr 18 '16 at 21:16 yeah you are right, i don't know how i can't see it. sorry for that silly misatake :( – hco Apr 19 '16 at 21:59 | 1 Answers
1
---Accepted---Accepted---Accepted---Django Serialize Dict Object Has No Attribute Meta Generator
Your serializer needs to use a nested
Meta
class to declare model
and fields
(you were declaring them as normal attributes of the class instead of nesting them):|
this answer answered Apr 18 '16 at 21:11 Timmy O'Mahony 34.7k 6 98 133 1 thanks it solved my problem :) i did some other small mistakes but it was the main problem i guess – hco Apr 19 '16 at 22:01 |
Recommend:python - Django REST framework: AttributeError: Serializer object has no attribute 'Meta'python# -*- coding: utf-8 -*-from django.db import modelsclass StationReport(models.Model): water_level = models.IntegerField(max_length=5, blank=False) user_name = models.CharField(max_length=256, blank=False) email_addres
Recommend:python - Django REST framework: AttributeError: Serializer object has no attribute 'Meta'
python# -*- coding: utf-8 -*-from django.db import modelsclass StationReport(models.Model): water_level = models.IntegerField(max_length=5, blank=False) user_name = models.CharField(max_length=256, blank=False) email_addres