Django——form组件之循环生成标签

from django.contrib import admin
from django.urls import path
from app01.views import index
 
urlpatterns = [
    path('admin/', admin.site.urls),
    path('index/',index)
]

from django.shortcuts import render,HttpResponse
from django import forms
from django.core.exceptions import ValidationError     #校验错误
 
class UserInfo(forms.Form):
 
    username = forms.CharField(
        label='用户名',
        required=True,
    )
 
    password = forms.CharField(
        label='密码',
        widget=forms.widgets.PasswordInput(render_value=True)
    )
 
    re_password = forms.CharField(
        label='确认密码',
        widget=forms.widgets.PasswordInput(render_value=True)
    )
 
 
def index(request):
 
    obj = UserInfo()
    return render(request,'index.html',{'obj': obj})

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>index</title>
</head>
<body>
 
    <form action="" method="post">
 
        {# 循环obj, 生成标签 #}
        {% for field in obj %}
            {# 循环后的 field 就是每一个form类的字段 #}
            <div>{{ field.label }}{{ field }}{{ field.errors.0 }}</div>
        {% endfor %}
 
 
        <p><input type="submit"></p>
    </form>
 
</body>
</html>