django表单

一、主要内容

　 1、服务端获取HttpRequest信息
        1）url相关信息
        2）HttpRequest.META中包含的键值对
        3）HttpRequest中用户提交的信息
        4）HttpRequest.GET：来自于<form>标签提交，或url查询字符串
                  一般只是从服务端获取信息
             HttpRequest.POST:来自于<form>标签提交
                  可能修改服务端信息
        5）action=““意味着表单将提交给与当前页面相同的URL
    2、多参数校验
        1）发邮件
        2）重定向：我们应每次都给成功的POST请求做重定向。 这就是web开发的最佳实践。
              原因：post成功后，直接重定向，不会造成重复向同一个页面post数据（返回同一个页面时，但参数要求不同）。    
        3）forms类只有绑定了才有error信息：
            initial函数不绑定，构造函数传入数据才绑定
        4）forms类中使用"clean_字段名()"方法，自定义数据校验规则
        5）forms类结合css进行渲染

二、基础代码

　　1、主要结构

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" alt="" />

　　2、urls.py

from django.conf.urls import patterns, include, url

from django.contrib import admin
admin.autodiscover()

urlpatterns = patterns('',
    (r'^contact_author/$', 'django_manage_app.views.contact_author'),
    (r'^thanks/$', 'django_manage_app.views.thanks'),
)

　　3、views.py

#coding:utf8
from django.http import HttpResponseRedirect
from django.shortcuts import render_to_response
from django_manage_app.forms import ContactForm

def contact_author(request):
    if request.method == 'POST':#提交请求时才会访问这一段，首次访问页面时不会执行
        form = ContactForm(request.POST)
        if form.is_valid():#说明各个字段的输入值都符合要求
            cd = form.cleaned_data#只有各个字段都符合要求时才有对应的cleaned_data
            print form.clean_message()
            print cd['subject']
            print cd['email']
            print cd['message']
            return HttpResponseRedirect('/thanks/')
        else:#有部分字段不符合要求，会有error相关信息给加到form中去，需要覆盖掉
            print form
            print '数据不符合要求'
            print form['subject'].errors
            print form['email'].errors
            print form['message'].errors
    else:#首次访问该url时没有post任何表单
        form = ContactForm()#第一次生成的form里面内容的格式
        print form
        print form.is_valid()

    #“首次访问”和“提交的信息不符合要求”时被调用
    return render_to_response('contact_author.html', {'form': form})

def thanks(request):

    return render_to_response('thanks.html')

　　4、forms.py

#coding:utf8
from django import forms

class ContactForm(forms.Form):
    subject = forms.CharField(max_length=10,label='主题')#设置最大长度为10
    email = forms.EmailField(required=False,label='Email')#非必要字段
    message = forms.CharField(widget=forms.Textarea,label='信息')#指定form中组件的类型

    #自定义校验规则，该方法在校验时被系统自动调用，次序在“字段约束”之后
    def clean_message(self):
        message = self.cleaned_data['message']#能到此处说明数据符合“字段约束”要求
        num_words = len(message.split())
        if num_words < 4:
            raise forms.ValidationError("单词个数低于4个!")
        return message

　　5、thanks.html

<!DOCTYPE html>
<html>
<head>
    <title></title>
</head>
<body>
    <h2>Thanks for contact!!</h2>
</body>
</html>

三、两种不同的页面显示

　　1、forms.py中默认的方式（简单测试）

　　　  1）contact_author.html:

<html>
<style type="text/css">
    {# <ul class="errorlist">。。。</ul> #}
    {# ul标签下的class="errorlist"的属性进行渲染 #}{# 标签下的属性 #}
    ul.errorlist {
        margin: 0;
        padding: 0;
    }
    {# <ul class="errorlist"><li>单词个数低于4个!</li></ul> #}
    {# errorlist class下的 li标签内的元素进行渲染 #}{# 属性下一级的标签 #}
    .errorlist li {
        background-color: red;
        color: white;
        display: block;
        font-size: 10px;
        margin: 0 0 3px;
        padding: 4px 5px;
    }
    .field{
        background-color: gray;
    }
</style>
<head>
    <title>Contact us</title>
</head>
<body>
    {% if form.errors %}
        <p style="color: red;">
            Please correct the error{{ form.errors|pluralize }} below.
        </p>
    {% endif %}

    <form action="" method="post">
        <table>
            {{ form.as_table }}
        </table>
        <input type="submit" value="提交">
    </form>
</body>
</html>

　　　2）测试

　　　　  初次访问：

　　　　　aaarticlea/png;base64,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" alt="" />

　　　　　打印结果：　　　　

<tr><th><label for="id_subject">主题:</label></th><td><input id="id_subject" maxlength="10" name="subject" type="text" /></td></tr>
<tr><th><label for="id_email">Email:</label></th><td><input id="id_email" name="email" type="email" /></td></tr>
<tr><th><label for="id_message">信息:</label></th><td><textarea cols="40" id="id_message" name="message" rows="10">
</textarea></td></tr>
False

　　2、页面中自定义显示方式（详细测试）

　　　1）contact_author.html

<html>
<style type="text/css">
    {# <ul class="errorlist">。。。</ul> #}
    {# ul标签下的class="errorlist"的属性进行渲染 #}{# 标签下的属性 #}
    ul.errorlist {
        margin: 0;
        padding: 0;
    }
    {# <ul class="errorlist"><li>单词个数低于4个!</li></ul> #}
    {# errorlist class下的 li标签内的元素进行渲染 #}{# 属性下一级的标签 #}
    .errorlist li {
        background-color: red;
        color: white;
        display: block;
        font-size: 10px;
        margin: 0 0 3px;
        padding: 4px 5px;
    }
    .field{
        background-color: gray;
    }
</style>
<head>
    <title>Contact us</title>
</head>
<body>
    {% if form.errors %}
        <p style="color: red;">
            Please correct the error{{ form.errors|pluralize }} below.
        </p>
    {% endif %}

    <form action="" method="post">
        <div class="field">
            {# 自动生成的默认错误信息显示 #}
            {# 会被翻译成：<ul class="errorlist"><li>这个字段是必填项。</li></ul> #}
            {{ form.subject.errors }}
            <label for="id_subject">页面自定义的主题:</label>
            {{ form.subject }}
            {# 自定义的错误信息显示 #}
            {% if form.subject.errors%}
            <label for="id_self_def_error_info" style="color: red;">
                *自定义错误信息：主题不能为空
            </label>
            {% endif %}

        </div>
        <div class="field">
            {{ form.email.errors }}
            <label for="id_email">页面中自定义的email:</label>
            {{ form.email }}
        </div>
        <div class="field">
            {{ form.message.errors }}
            <label for="id_message">页面中自定义的信息:</label>
            {{ form.message }}
        </div>
        <input type="submit" value="提交">
    </form>
</body>
</html>

　　 2）测试

　　　　a）首次访问

　　　　　aaarticlea/png;base64,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" alt="" />

　　　　　打印结果：　

<tr><th><label for="id_subject">主题:</label></th><td><input id="id_subject" maxlength="10" name="subject" type="text" /></td></tr>
<tr><th><label for="id_email">Email:</label></th><td><input id="id_email" name="email" type="email" /></td></tr>
<tr><th><label for="id_message">信息:</label></th><td><textarea cols="40" id="id_message" name="message" rows="10">
</textarea></td></tr>
False

　　 b）输入正确格式并提交

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alt="" />

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" alt="" />

　　　　打印结果：

　　　　aaarticlea/png;base64,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" alt="" />

　　c）输入错误格式并提交

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" alt="" />

　　　　打印结果：　最终页面显示时，form类中定义的label文字，被自定义的内容替换

<tr><th><label for="id_subject">主题:</label></th><td><ul class="errorlist"><li>这个字段是必填项。</li></ul><input id="id_subject" maxlength="10" name="subject" type="text" /></td></tr>
<tr><th><label for="id_email">Email:</label></th><td><input id="id_email" name="email" type="email" value="aaa@sina.com" /></td></tr>
<tr><th><label for="id_message">信息:</label></th><td><ul class="errorlist"><li>单词个数低于4个!</li></ul><textarea cols="40" id="id_message" name="message" rows="10">
s</textarea></td></tr>
数据不符合要求
<ul class="errorlist"><li>这个字段是必填项。</li></ul>

<ul class="errorlist"><li>单词个数低于4个!</li></ul>

　　　  ps: 如果email格式不正确，页面会直接弹出提示，而不会提交到后台

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6HA4GA3++fnp72+Xxer3cKACO8Xq/P55uenvb7/YFAIBwO58WUzWZXVlbgJsCD4yZVVXO5XF5PoihGo9FQKDQ/Pz83Nzc3N/cIACPyS2V+fj4UCkWjUVEU82KycDcHNzkOvptUVV1ZWVEURZZlSZJEUYzFYrFYLBKJRCKRJQD0yS+S/IIRRVGSJFmWFUWxtmOCmxyHoZvy5HI5RVEymYwsy+l0WpKkxwAYIUlSOp2WZTmTySiKYnm7BDc5EaKbAKgF4CYHATeBOgJuchBwE6gj4CYHATeBOgJuchBwE6gj4CYHATeBOgJuchBwE6gj4CYHATeBOgJuchBwE6gj4CYHATeBOgJuchBwE6gj4CYHATeBOgJuchBwE6gj4CYHATeBOgJuchBwE6gj/g8y2bjZwRg+IQAAAABJRU5ErkJggg==" alt="" />

参考：http://djangobook.py3k.cn/2.0/chapter07/