Question

如果传递了一个modeladmin，我想做一些事情，如果传递了另一个modeladmin，我会做另一件事。但似乎modeladmin不会作为list_filter中的参数传递，而它会在django admin中的操作中传递。为什么会这样呢？

from datetime import date

from django.utils.translation import ugettext_lazy as _
from django.contrib.admin import SimpleListFilter

class DecadeBornListFilter(SimpleListFilter):
    # Human-readable title which will be displayed in the
    # right admin sidebar just above the filter options.
    title = _('decade born')

    # Parameter for the filter that will be used in the URL query.
    parameter_name = 'decade'

    def lookups(self, request, model_admin):
        """
        Returns a list of tuples. The first element in each
        tuple is the coded value for the option that will
        appear in the URL query. The second element is the
        human-readable name for the option that will appear
        in the right sidebar.
        """
        return (
            ('80s', _('in the eighties')),
            ('90s', _('in the nineties')),
        )

    def queryset(self, request, queryset):
        """
        Returns the filtered queryset based on the value
        provided in the query string and retrievable via
        `self.value()`.
        """
        # Compare the requested value (either '80s' or '90s')
        # to decide how to filter the queryset.
        if self.value() == '80s':
            return queryset.filter(birthday__gte=date(1980, 1, 1),
                                    birthday__lte=date(1989, 12, 31))
        if self.value() == '90s':
            return queryset.filter(birthday__gte=date(1990, 1, 1),
                                    birthday__lte=date(1999, 12, 31))

例如，在上面的例子中，如果是一个要检查生日是在90年代或2000年之间的学生，我想做一些不同的事情。但它是父母，我想检查生日是在70年代还是80年代？假设将传递不同的modeladmin。我如何包含modeladmin作为参数来进行这些更改？需要一些指导......

Answer 1

您可以设置self.model_admin：

class DecadeBornListFilter(SimpleListFilter):
    #[...]

    def lookups(self, request, model_admin):
        self.model_admin = model_admin
        # ...

    def queryset(self, request, queryset):
        # here you can use self.model_admin

或者，使用继承：

class BaseDecadeBornListFilter(SimpleListFilter):
    # [...]


class DecadeBornListFilter1(BaseDecadeBornListFilter):
    # [...]


class DecadeBornListFilter2(BaseDecadeBornListFilter):
    # [...]


class StudentModelAdmin1(admin.ModelAdmin):
    list_filter = (DecadeBornListFilter1,)


class StudentModelAdmin2(admin.ModelAdmin):
    list_filter = (DecadeBornListFilter2,)

传递modeladmin作为Django Admin中自定义列表过滤的参数

1 个答案: