Я пытаюсь использовать rest_framework_filters. Тем не менее, я терплю неудачу - PullRequest
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Я пытаюсь использовать rest_framework_filters. Тем не менее, я терплю неудачу

0 голосов
/ 07 апреля 2020

Я пытался свободно использовать rest_framework_filters. Поскольку я строю проект, я не могу понять, что я делаю неправильно, это было почти 2 дня, и разочарование продолжает расти. Что-то не так с моим импортом в rest_framework_filters.backend. Пожалуйста, помогите, я потерялся.

Вот мой класс models.py 

from django.db import models

class Manufacturer(models.Model):
    name = models.CharField(max_length=128)
    created_at = models.DateField(auto_now_add=True)

class Product(models.Model):
    name = models.CharField(max_length=255)
    price = models.DecimalField(max_digits=8,decimal_places=2)
    description = models.TextField()
    release_date = models.DateField()
    manufacturer = models.ForeignKey(Manufacturer, related_name='manufacturer', on_delete=models.CASCADE)

Это мой класс filters.py 

import rest_framework_filters as filters

from .models import Product

class ProductFilter(filters.FilterSet):
    class Meta:
        model = Product
        fields = {'name':['exact','icontains','in','startswith']}

Это мой класс views.py 

from .filters import ProductFilter
from .serializers import ManufacturerSerializer
from .serializers import ProductSerializer

from rest_framework.viewsets import ModelViewSet
from rest_framework.permissions import AllowAny
from rest_framework_filters.backends import DjangoFilterBackend

from base.models import Manufacturer
from base.models import Product


class ManufacturerViewset(ModelViewSet):
    permission_classes = (AllowAny,)
    serializer_class = ManufacturerSerializer
    queryset = Manufacturer.objects.all()
    lookup_field = 'pk'


class ProductViewSet(ModelViewSet):
    permission_classes = (AllowAny,)
    serializer_class =ProductSerializer
    queryset = Product.objects.all()
    lookup_field = 'pk'
    filter_backends = (DjangoFilterBackend,)
    filter_class = ProductFilter

    def get_queryset(self):
        return self.queryset.filter(manufacturer__id=self.kwargs.get('manufacturer_pk'))

REST_FRAMEWORK = {
    'DEFAULT_FILTER_BACKENDS': (
            'rest_framework_filters.backends.DjangoFilterBackend',
        ),
    # Use Django's standard `django.contrib.auth` permissions,
    # or allow read-only access for unauthenticated users.
    'DEFAULT_PERMISSION_CLASSES': [
        'rest_framework.permissions.DjangoModelPermissionsOrAnonReadOnly',
        'rest_framework.permissions.AllowAny'
    ]
}

Это ошибка 

Internal Server Error: /manufacturers/7/products/
Traceback (most recent call last):
  File "/home/asif/drive1/learn/filter/env/lib/python3.6/site-packages/django/core/handlers/exception.py", line 34, in inner
    response = get_response(request)
  File "/home/asif/drive1/learn/filter/env/lib/python3.6/site-packages/django/core/handlers/base.py", line 115, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "/home/asif/drive1/learn/filter/env/lib/python3.6/site-packages/django/core/handlers/base.py", line 113, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/home/asif/drive1/learn/filter/env/lib/python3.6/site-packages/django/views/decorators/csrf.py", line 54, in wrapped_view
    return view_func(*args, **kwargs)
  File "/home/asif/drive1/learn/filter/env/lib/python3.6/site-packages/rest_framework/viewsets.py", line 114, in view
    return self.dispatch(request, *args, **kwargs)
  File "/home/asif/drive1/learn/filter/env/lib/python3.6/site-packages/rest_framework/views.py", line 497, in dispatch
    response = self.handle_exception(exc)
  File "/home/asif/drive1/learn/filter/env/lib/python3.6/site-packages/rest_framework/views.py", line 457, in handle_exception
    self.raise_uncaught_exception(exc)
  File "/home/asif/drive1/learn/filter/env/lib/python3.6/site-packages/rest_framework/views.py", line 468, in raise_uncaught_exception
    raise exc
  File "/home/asif/drive1/learn/filter/env/lib/python3.6/site-packages/rest_framework/views.py", line 494, in dispatch
    response = handler(request, *args, **kwargs)
  File "/home/asif/drive1/learn/filter/env/lib/python3.6/site-packages/rest_framework/mixins.py", line 38, in list
    queryset = self.filter_queryset(self.get_queryset())
  File "/home/asif/drive1/learn/filter/env/lib/python3.6/site-packages/rest_framework/generics.py", line 150, in filter_queryset
    queryset = backend().filter_queryset(self.request, queryset, self)
  File "/home/asif/drive1/learn/filter/env/lib/python3.6/site-packages/rest_framework_filters/backends.py", line 34, in filter_queryset
    return super(DjangoFilterBackend, self).filter_queryset(request, queryset, view)
  File "/home/asif/drive1/learn/filter/env/lib/python3.6/site-packages/django_filters/rest_framework/backends.py", line 96, in filter_queryset
    return filterset.qs
  File "/home/asif/drive1/learn/filter/env/lib/python3.6/site-packages/rest_framework_filters/filterset.py", line 266, in qs
    qs = super(FilterSet, self).qs
  File "/home/asif/drive1/learn/filter/env/lib/python3.6/site-packages/django_filters/filterset.py", line 237, in qs
    qs = self.filter_queryset(qs)
  File "/home/asif/drive1/learn/filter/env/lib/python3.6/site-packages/django_filters/filterset.py", line 224, in filter_queryset
    queryset = self.filters[name].filter(queryset, value)
KeyError: 'name'
[07/Apr/2020 11:42:44] "GET /manufacturers/7/products/ HTTP/1.1" 500 18002
...