python - 使用 django-filter，有没有一种快速的方法来支持所有可能的字段查找？

Question

django-filter 允许您轻松声明模型的可过滤字段。

例如，

class UserFilter(django_filters.FilterSet):
    class Meta:
        model = User
        fields = ['username']

为 username 字段提供了一个exact 查找，等同于此...

class UserFilter(django_filters.FilterSet):
    class Meta:
        model = User
        fields = {
            'username': ['exact']
        }

我正在寻找一种方法来支持给定字段的所有可能的查找过滤器，这样我就不必这样做了:

class UserFilter(django_filters.FilterSet):
    class Meta:
        model = User
        fields = {
            "username": ["exact", "iexact", "contains", "icontains", "startswith", ..., etc.]
        }

Answer 1

重写 FilterSet 类的 get_fields(...) 类方法为，

import django_filters as filters
# If you are using DRF, import `filters` as
# from django_filters import rest_framework as filters


class AnyModelFilter(filters.FilterSet):
    class Meta:
        model = AnyModel
        fields = '__all__'

    <b>@classmethod
    def get_fields(cls):
        fields = super().get_fields()
        for field_name in fields.copy():
            lookup_list = cls.Meta.model._meta.get_field(field_name).get_lookups().keys()
            fields[field_name] = lookup_list
        return fields</b>