python-django-初识Form组件(基本使用)

Django内置Form组件

 

- 对用户请求的验证
- AJax
- Form
- 生成HTML代码

a. 创建一个类
b. 类中创建字段(包含正则表达式)
c. GET
obj = Fr()
obj.user = > 自动生成HTML

d. POST
obj = Fr(request.POST)
if obj.is_valid():
obj.cleaned_data
else:
obj.errors
return .... obj

 

直接上代码:

views.py

 1 from django.shortcuts import render
 2 from django.shortcuts import redirect
 3 from django.shortcuts import HttpResponse
 4 
 5 
 6 from django import forms
 7 from django.forms import fields
 8 class F1Form(forms.Form):
 9     user = fields.CharField(
10         max_length=18,
11         min_length=6,
12         required=True,
13         error_messages={
      'required': '用户名不能为空','max_length': '太长了','min_length': '太短了','invalid':'..'}
14     )
15     pwd = fields.CharField(required=True,min_length=32)
16     age = fields.IntegerField(
17         required=True
18     )
19     email = fields.EmailField(
20         required=True,
21         min_length=8
22     )
23 
24 
25 def f1(request):
26     if request.method == 'GET':
27         obj = F1Form()
28         #自动生成HTML代码 
29         return render(request,'f1.html',{
      'obj':obj})
30     else:
31         obj = F1Form(request.POST)
32         # 是否全部验证成功
33         if obj.is_valid():
34             # 用户提交的数据
35             print('验证成功',obj.cleaned_data)
36             return redirect('http://www.baidu.com')
37         else:
38             print('验证失败',obj.errors)
39             return render(request, 'f1.html',{
      'obj':obj})

f1.html

 1 DOCTYPE html>
 2 <html lang="en">
 3 <head>
 4     <meta charset="UTF-8">
 5     <title>Titletitle>
 6 head>
 7 <body>
 8     <form id="fm" action="/f1.html" method="POST">
 9         <p>{
      { obj.user }}{
      { obj.errors.user.0 }}p>
10         <p>{
      { obj.pwd }}{
      { obj.errors.pwd.0 }}p>
11         <p>{
      { obj.age }}{
      { obj.errors.age.0 }}p>
12         <p>{
      { obj.email }}{
      { obj.errors.email.0 }}p>
13         <input type="submit" value="提交" />
14     form>
15     <script src="/static/jquery-3.1.1.js">script>
16 
17 body>
18 html>

 

转载于:https://www.cnblogs.com/GodLv/p/9577170.html

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