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svmitin
Asked:2022-03-28 01:59:10 +0800 CST2022-03-28 01:59:10 +0800 CST

ForeignKey 的 Django Admin 更改小部件

  • 772

在模型的管理面板中打开时，CoinTransaction该字段user是一个下拉列表。由于大约有 2 万用户，所以这个页面渲染了很长时间。此外，它不是唯一的领域ForeignKey。有必要将下拉列表中的小部件替换为可以输入的输入字段User.id

设法更改 ForeignKey 的小部件，但未保存数据。给出这样的错误：

无法分配“30784”：“CoinTransaction.user”必须是“用户”实例

注：30784是用户IDUser

模型.py：

class User(AbstractUser):
    """Пользователь"""
    ...

    def __str__(self):
        return f'{self.last_name} {self.first_name}'

    class Meta:
        verbose_name = 'Пользователь'
        verbose_name_plural = 'Пользователи'

class CoinTransaction(models.Model):
    """Монеты пользователей"""
    ...
    user = models.ForeignKey(User, verbose_name='Пользователь', on_delete=models.CASCADE)
    ...

管理员.py

class CoinTransactionAdminForm(forms.ModelForm):
    """Изменяем виджеты"""
    user = forms.IntegerField(label='Id пользователя')

    class Meta:
        model = CoinTransaction
        fields = '__all__'


@admin.register(CoinTransaction)
class CoinTransactionAdmin(admin.ModelAdmin):
    """Транзакции монет"""
    list_display = ('id', 'user', 'amount', 'operation_type', 'order')
    list_display_links = ('id', 'user',)

    def get_form(self, request, obj=None, **kwargs):
        """Я не до конца понимаю смысл этого метода"""
        if request.user.is_superuser:
            kwargs['form'] = CoinTransactionAdminForm
        return super().get_form(request, obj, **kwargs)
python

1 个回答

  1. Best Answer

    ForeignKeyRawIdWidget通过创建自己的表单将标准小部件更改为

    管理员.py：

    from django.contrib.admin.sites import site
from django.contrib.admin.widgets import ForeignKeyRawIdWidget


class CoinTransactionAdminForm(forms.ModelForm):
    """Изменяем виджет для ForeignKey"""

    class Meta:
        model = CoinTransaction
        widgets = {
            'user': ForeignKeyRawIdWidget(CoinTransaction._meta.get_field('user').remote_field, site),
        }
        fields = '__all__'


@admin.register(CoinTransaction)
class CoinTransactionAdmin(admin.ModelAdmin):
    """Транзакции монет"""
    list_display = ('id', 'user', 'amount', 'operation_type', 'order')
    list_display_links = ('id', 'user',)
    form = CoinTransactionAdminForm
    • 1

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