如何让Django表单显示html必需属性？ [英] How do I get Django forms to show the html required attribute?

问题描述

我有这个表单字段：

email = forms.EmailField(
  required=True,
  max_length=100,
)

它具有必需的属性，但在html中没有添加html属性需要。事实上，它甚至不使用电子邮件作为字段类型，它使用文本 ...虽然它似乎获得max_length

It has the required attribute, but in the html it is not adding the html attribute required. In fact it's not even using email as the field type, it's using text... though it appears to get max_length just fine.

实际：

<input id="id_email" type="text" name="email" maxlength="100">

预期：

<input id="id_email" type="email" name="email" maxlength="100" required="true">

如何让Django在html表单中使用正确的属性？

How can I get Django to use the correct attributes in html forms?

推荐答案

Monkeypatching Widget是你最好的选择：

Monkeypatching Widget is your best bet:

from django.forms.widgets import Widget
from django.contrib.admin.widgets import AdminFileWidget
from django.forms import HiddenInput, FileInput

old_build_attrs = Widget.build_attrs

def build_attrs(self, extra_attrs=None, **kwargs):
    attrs = old_build_attrs(self, extra_attrs, **kwargs)

    # if required, and it's not a file widget since those can have files
    # attached without seeming filled-in to the browser, and skip hidden "mock"
    # fileds created for StackedInline and TabbedInline admin stuff
    if (self.is_required
            and type(self) not in (AdminFileWidget, HiddenInput, FileInput)
            and "__prefix__" not in attrs.get("name", "")):
        attrs['required'] = 'required'

    return attrs

Widget.build_attrs = build_attrs

这篇关于如何让Django表单显示html必需属性？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IT屋！