Django-form进阶+详细版

Django的Form主要具有一下几大功能：

• 生成HTML标签
• 验证用户数据（显示错误信息）
• HTML Form提交保留上次提交数据
• 初始化页面显示内容

一.创建Form类

#!/usr/bin/env python
 
from django.forms import Form
from django.forms import widgets
from django.forms import fields
 
 
class MyForm(Form):
    user = fields.CharField(
        widget=widgets.TextInput(attrs={"id": "i1", "class": "c1"}),  # 定制html标签
        label="用户名"
    )
 
    gender = fields.ChoiceField(
        choices=((1, "男"), (2, "女")),
        initial=2,  # 设置默认值
        widget=widgets.RadioSelect,
        label="性别"
 
    )
 
    city = fields.CharField(
        initial=2,
        widget=widgets.Select(choices=((1,"上海"), (2,"北京"), (3,"重庆"))),
        label="城市"
 
    )
 
    pwd = fields.CharField(
        widget=widgets.PasswordInput(attrs={"class":"p1"}, render_value=True),
        label="性别"
    )

View Code

2.view函数处理

from django.shortcuts import render, redirect
 
# Create your views here.
from day60app.form_cls import MyForm
 
 
def index(request):
    if request.method == "GET":
        obj = MyForm()
        return render(request, "index.html", {"obj": obj})
    elif request.method == "POST":
        obj = MyForm(request.POST, request.FILES)
        if obj.is_valid():
            v = obj.cleaned_data
            print("用户验证成功信息", v)
            return redirect("http://www.jd.com")
        else:
            v = obj.errors
            print("错误信息", v)
            return render(request, "index.html", {"obj": obj})

View Code