Django管理日期范围过滤器

问题描述

我正在为Django管理员写一个客户日期范围字段。这是我的过滤器，它非常类似于，但不适合我。我究竟做错了什么？它只显示每个选择的所有记录。

I'm trying to write a customer date range field for Django admin. This is my filter, which is very similar to the decade example provided in the docs but is not working for me. What am I doing wrong? It just shows all records for every selection.

class DaysSinceAdvertFilter(admin.SimpleListFilter):
    # Human-readable title which will be displayed in the
    # right admin sidebar just above the filter options.
    title = _('Days Since Advert')

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

    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 (
            ('0', _('Less than 7 days')),
            ('7', _('7-13 days')),
            ('14', _('14-20 days')),
            ('21', _('21-27 days')),
            ('28', _('28-34 days')),
            ('35', _('35+ days')),
        )

    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 to decide how to filter the queryset.
        today = datetime.date.today()
        if self.value() == '0':
            return queryset.filter(last_advert__gte=today - datetime.timedelta(days=6))
        if self.value() == '7':
            return queryset.filter(last_advert__gte=today - datetime.timedelta(days=13),
                                   last_advert__lte=today - datetime.timedelta(days=7))
        if self.value() == '14':
            return queryset.filter(last_advert__gte=today - datetime.timedelta(days=20),
                                   last_advert__lte=today - datetime.timedelta(days=14))
        if self.value() == '21':
            return queryset.filter(last_advert__gte=today - datetime.timedelta(days=27),
                                   last_advert__lte=today - datetime.timedelta(days=21))
        if self.value() == '28':
            return queryset.filter(last_advert__gte=today - datetime.timedelta(days=34),
                                   last_advert__lte=today - datetime.timedelta(days=28))
        if self.value() == '35':
            return queryset.filter(last_advert__lte=today - datetime.timedelta(days=35))

last_advert是一个 models.DateField

last_advert is a models.DateField

推荐答案

您可以使用简单的 last_advert__range
创建一个与您在 lookups（）中创建的元组相同的dict的dict。
有些这样的事情

You can use simply last_advert__rangecreate a dict for the your ranges same as tuple you have created in lookups()Some thing like this

 no_of_routes_dict = {
    '7': [14, 20]}

和 queryset（）

filt_no_of_routes=request.GET.get['para']
`last_advert__range`= no_of_routes_dict[filt_no_of_routes]

这可能有助于

class NumberOfRoutesFilter(SimpleListFilter):
title = 'Date Range'
parameter_name = 'date-range'
date_dict = {
    '0': [0, 7],
    '7': [7, 13],
    '14': [14, 20],
    '21': [21, 27],

}

def lookups(self, request, model_admin):
    return [
       ('0', 'Less than 7 days'),
        ('7', '7-13 days'),
        ('14', '14-20 days'),
        ('21', '21-27 days')
    ]

def queryset(self, request, queryset):
    filt_date = request.GET.get('date-range')
    if filt_date:
        return queryset.filter(
            last_advert__range=self.date_dict[filt_date]
        )
    return queryset

这篇关于Django管理日期范围过滤器的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！