lak*_*esh 52 django django-admin
我想为django admin而不是普通的'is_staff'和'is_superuser'制作自定义过滤器.我在Django docs中读过这个list_filter.自定义过滤器以这种方式工作:
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))
class PersonAdmin(ModelAdmin):
list_filter = (DecadeBornListFilter,)
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但我已经为list_display制作了这样的自定义函数:
def Student_Country(self, obj):
return '%s' % obj.country
Student_Country.short_description = 'Student-Country'
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有可能我可以在list_filter中使用list_display的自定义函数,而不是为list_filter编写新的自定义函数吗?欢迎任何建议或改进..需要一些指导......谢谢......
Ric*_*era 33
您确实可以通过扩展SimpleListFilter为管理过滤器添加自定义过滤器.例如,如果要将"非洲"的大陆过滤器添加到上面使用的国家/地区管理过滤器,则可以执行以下操作:
在admin.py中:
from django.contrib.admin import SimpleListFilter
class CountryFilter(SimpleListFilter):
title = 'country' # or use _('country') for translated title
parameter_name = 'country'
def lookups(self, request, model_admin):
countries = set([c.country for c in model_admin.model.objects.all()])
return [(c.id, c.name) for c in countries] + [
('AFRICA', 'AFRICA - ALL')]
def queryset(self, request, queryset):
if self.value() == 'AFRICA':
return queryset.filter(country__continent='Africa')
if self.value():
return queryset.filter(country__id__exact=self.value())
class CityAdmin(ModelAdmin):
list_filter = (CountryFilter,)
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您的list_display方法返回一个字符串,但是,如果我理解正确,那么您想要做的就是添加一个过滤器,该过滤器允许选择学生所在的国家/地区,对吗?
对于这种简单的关系过滤器,实际上对于“ Student-Country”列表显示列,您也无需创建自定义过滤器类或自定义列表显示方法。这样就足够了:
class MyAdmin(admin.ModelAdmin):
list_display = ('country', )
list_filter = ('country', )
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该办法Django的呢list_filter,因为解释的文档,最早是由您提供的预建过滤器类自动匹配字段; 这些过滤器包括CharField和ForeignKey。
list_display类似地,使用通过检索相关对象并返回这些对象的unicode值(与上面提供的方法相同)传递的字段来自动执行变更列表列的填充。
除了Rick Westera 的回答之外,这里还有针对这种情况的Django 文档
ModelAdmin.list_filter
设置list_filter为激活管理员更改列表页面右侧栏中的过滤器
list_filter应该是元素列表或元组
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