django 表单html5,我们如何在django管理表单中添加动态html5数据属性
你繼承Django的ModelChoiceField并修改它的render_options()和render_option()方法來顯示你所需要的對象的屬性。我想你也需要你自己的ModelChoiceIterator的子類,這樣它不僅可以吐出id/label元組,而且可以分離出你需要的所有數據。
例
我只是找到了一個自定義的SelectWidget的實施OpenStack's dashboard:
class SelectWidget(widgets.Select):
"""
Customizable select widget, that allows to render
data-xxx attributes from choices.
.. attribute:: data_attrs
Specifies object properties to serialize as
data-xxx attribute. If passed ('id',),
this will be rendered as:
option_value
where 123 is the value of choice_value.id
.. attribute:: transform
A callable used to render the display value
from the option object.
"""
def __init__(self, attrs=None, choices=(), data_attrs=(), transform=None):
self.data_attrs = data_attrs
self.transform = transform
super(SelectWidget, self).__init__(attrs, choices)
def render_option(self, selected_choices, option_value, option_label):
option_value = force_unicode(option_value)
other_html = (option_value in selected_choices) and \
u' selected="selected"' or ''
if not isinstance(option_label, (basestring, Promise)):
for data_attr in self.data_attrs:
data_value = html.conditional_escape(
force_unicode(getattr(option_label,
data_attr, "")))
other_html += ' data-%s="%s"' % (data_attr, data_value)
if self.transform:
option_label = self.transform(option_label)
return u'%s' % (
html.escape(option_value), other_html,
html.conditional_escape(force_unicode(option_label)))
編輯
只要你提供這樣的選擇,它應該工作:
def formfield_for_foreignkey(self, db_field, request, **kwargs):
if db_field.name == 'dummy':
widget = SelectWidget(data_attrs=('bar',))
choices = [(foo.id, foo) for foo in Foo.objects.all()]
form_field = forms.ChoiceField(
choices=choices, widget=widget)
return form_field
return super().formfield_for_foreignkey(db_field, request, **kwargs)
總結
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