Form对与一个网站来说就是一个灵魂，今天我们就来说说Django的Form概述.

本文内容来自官网,互联网及自己实验所得.

表单(forms.py)的定义:

#coding:utf-8

from django import forms
from django.forms.extras.widgets import SelectDateWidget
SEX_CHOICES=(
('male','男'),
('female','女')
)
BIRTH_YEAR_CHOICES = ('1980', '1981', '1982','1983','1984')
#注册表单
class Register(forms.Form):
    nickname = forms.CharField(max_length=20,label="昵称",help_text="请输入您的别名!",widget=forms.TextInput(attrs={'class':'special','id':'nick'}),error_messages={'required':u'别名不能为空'})
    username = forms.CharField(label="用户名",error_messages={'required':u'用户名不能为空'})
    password = forms.CharField(label="密码",widget=forms.PasswordInput)
    sex = forms.ChoiceField(widget=forms.RadioSelect,choices=SEX_CHOICES,label="性别")
    email = forms.EmailField(label="邮箱",error_messages={'required':u'邮箱不能为空','invalid':u'请输入正确的邮箱'})
    phone = forms.CharField(required=False,label="手机号")
    birthday = forms.DateField(widget=SelectDateWidget(years=BIRTH_YEAR_CHOICES))

以上是表单经常使用的属性，供其参考.

如,我们需要更改某个表单默认的元素就需要使用widget，并且改变其元素属性就需要使用attrs。

视图(应用)逻辑

views.py

#coding:utf-8

from django.shortcuts import render
from django.http import HttpResponse
from forms import Register
from django.forms.util import ErrorList
# Create your views here.
#重新定义检验错误输出
class DivErrorList(ErrorList):
    def __unicode__(self):
        return self.as_divs()
    def as_divs(self):
        if not self: return u''
        return u'%s' %''.join([u'<div class="error">%s</div>' % e for e in self])
def register(request):
    if request.method == 'POST':
         regform = Register(request.POST,auto_id="%s",error_class=DivErrorList)
         if regform.is_valid():
             nickname = regform.cleaned_data['nickname'] #别名
             #print nickname
             return HttpResponse(u"{0},欢迎您!".format(nickname))
    else:
         regform = Register(auto_id="%s",label_suffix=":") #auto_id有3种设置:True/False/str 若是False不需要html元素中的id标识与True相反,auto_id="%s"，则是field的名字
    return render(request,"register.html",{'reg':regform})

模板

base.html

<html>

<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>
{% block title %}
首页
{% endblock%}
</title>
</head>
<body>
{% block content %}
这是内容
{% endblock %}
</body>
</html>

register.html

{% extends "base.html" %}

{% block title %}
用户注册
{% endblock %}
{% block content %}
<form method="POST">{% csrf_token %}
<label><h1>用户注册</h1></label></br>
{% comment%}
{% for err_label,err_value in reg.errors.items %}
    `err_label`:`err_value`
{% endfor %}
{% endcomment %}
<label>别名:</label>`reg`.`nickname` `reg`.`nickname`.`help_text` {
{reg.nickname.errors|safe}}</br>
<label>用户名:</label>`reg`.`username` {
{reg.username.errors|safe}}</br>
<label>密码:</label>`reg`.`password`</br>
<label>性别:</label>
{% for sex in reg.sex %}
   ` sex `
{% endfor %}
</br>
<label>邮箱:</label>`reg`.`email`{
{reg.email.errors|safe}}</br>
<label>电话:</label>`reg`.`phone`</br>
<label>生日:</label>`reg`.`birthday`</br>
<input type="submit" value="注册"/>
</form>
{% endblock %}

长啥子样?

表单基础通过以上，基本也就这样了，后面就要去研究下表单数据验证这块!

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