表2编辑所有BooleanColumn的yesno参数

Question

我有一个table.py，在这里我想要更改每个BooleanColumn的真值和假值的图标。我知道BooleanColumn的yesno参数可以修改它，但我不知道如何覆盖所有BooleanColumns的缺省值。这是tables.py的代码(aacsb、amba、equis、mba、bsc、msc和doubedegree is BooleanFields)：

from django_tables2 import Column, Table
from manager.models import Partner


class PartnerTable(Table):

    country_name = Column(accessor='country.name', verbose_name='Country')
    region_name = Column(accessor='country.region.name', verbose_name='Region')

    class Meta:
        model = Partner
        fields = ('name',
                  'country_name',
                  'region_name',
                  'website',
                  'aacsb',
                  'amba',
                  'equis',
                  'mba',
                  'bsc',
                  'msc',
                  'doubledegree',
                  )

Answer 1

1)因此，您可以简单地重写默认值为“yesno”的str(它只是str)：

some_name = BooleanColumn(yesno='1,2')

或删除文本：

some_name = BooleanColumn(yesno=',')

2)使用css，您可以指定自定义映像(不要忘记设置yesno=',')：

span.true {
    background: url(../img/true.gif) top center no-repeat;
}

span.false {
    background: url(../img/false.gif) top center no-repeat;
}

3)为span指定一些额外的吸引(但不指定class !)：

some_name = BooleanColumn(attrs={'span': {'style': 'color:blue'}})

4)如果出于某些原因需要更改默认类设置行为(true或false)，则应重写BooleanColumn及其方法render

from django.utils.html import escape
from django.utils.safestring import mark_safe
from django_tables2.utils import AttributeDict


class CustomBooleanColumn(BooleanColumn):
    def render(self, value):
        value = bool(value)
        text = self.yesno[int(not value)]
        html = '<span %s>%s</span>'

        class_name = 'some_class_false'
        if value:
            class_name = 'some_class_true'
        attrs = {'class': 'class_name'}

        attrs.update(self.attrs.get('span', {}))

        return mark_safe(html % (AttributeDict(attrs).as_html(), escape(text)))

并覆盖您的字段

some_name = CustomBooleanColumn(yesno=',')

Answer 2

这是完整的代码，感谢马佐汉的回答。注意，我使用了django-bootstrap3，这样我就可以使用引导图标：

from django_tables2 import BooleanColumn, Column, Table
from django.utils.safestring import mark_safe
from django_tables2.utils import AttributeDict
from manager.models import Partner


class BootstrapBooleanColumn(BooleanColumn):
    def __init__(self, null=False, **kwargs):
        if null:
            kwargs["empty_values"] = ()
        super(BooleanColumn, self).__init__(**kwargs)

    def render(self, value):
        value = bool(value)
        html = "<span %s></span>"

        class_name = "glyphicon glyphicon-remove"
        if value:
            class_name = "glyphicon glyphicon-ok"
        attrs = {'class': class_name}

        attrs.update(self.attrs.get('span', {}))

        return mark_safe(html % (AttributeDict(attrs).as_html()))


class PartnerTable(Table):
    country_name = Column(accessor='country.name', verbose_name='Country')
    region_name = Column(accessor='country.region.name', verbose_name='Region')
    aacsb = BootstrapBooleanColumn()
    amba = BootstrapBooleanColumn()
    equis = BootstrapBooleanColumn()
    mba = BootstrapBooleanColumn()
    bsc = BootstrapBooleanColumn()
    msc = BootstrapBooleanColumn()
    doubledegree = BootstrapBooleanColumn()

    class Meta:
        model = Partner
        fields = ('name',
                  'country_name',
                  'region_name',
                  'website',
                  'aacsb',
                  'amba',
                  'equis',
                  'mba',
                  'bsc',
                  'msc',
                  'doubledegree',
                  )