首页 > 代码库 > Django表单

Django表单

2024-08-17 03:34:48   217人阅读

技术分享

 

1. get方式请求表单

settings.py添加templates路径

TEMPLATES = [
    {
        ‘BACKEND‘: ‘django.template.backends.django.DjangoTemplates‘,
        ‘DIRS‘: [BASE_DIR+‘/templates‘,],
        ‘APP_DIRS‘: True,
        ‘OPTIONS‘: {
            ‘context_processors‘: [
                ‘django.template.context_processors.debug‘,
                ‘django.template.context_processors.request‘,
                ‘django.contrib.auth.context_processors.auth‘,
                ‘django.contrib.messages.context_processors.messages‘,
            ],
        },
    },
]

 


templates/search_form.html

<!DOCTYPE html>
<html lang="zh-cn">
<head>
    <meta charset="UTF-8">
    <title>search_form</title>
</head>
<body>

<form action="/search/" method="get">
    <input type="text" name="q">
    <input type="submit" value="Search">
</form>
    
</body>
</html>

 


新建search.py文件，并写入：

# coding=utf8

from django.http import HttpResponse
from django.shortcuts import render_to_response

# 表单
def search_form(request):
    return render_to_response(‘search_form.html‘)

# 接收请求数据
def search(request):
    request.encoding=‘utf-8‘
    if ‘q‘ in request.GET:
        message = ‘你搜索的内容为：‘ + str(request.GET[‘q‘])
    else:
        message = ‘你提交了空表单‘

    return HttpResponse(message)

 


urls.py

from django.conf.urls import url
from django.contrib import admin
from HelloWorld import search

urlpatterns = [
    url(r‘^admin/‘, admin.site.urls),
    url(r‘^search-form/$‘, search.search_form),
    url(r‘^search/$‘, search.search),
]

 

django form类

Form表单的功能
自动生成HTML表单元素
检查表单数据的合法性
如果验证错误，重新显示表单（数据不会重置）
数据类型转换（字符类型的数据转换成相应的Python类型）

新建一个form.py，写入：

from django import forms

class ContactForm(forms.Form):
    subject = forms.CharField()
    email = forms.EmailField(required=False)
    message = forms.CharField()

技术分享

 

在命令行里测试form类
>>> print f.as_ul()
<li><label for="id_subject">Subject:</label> <input type="text" name="subject" id="id_subject" /></li>
<li><label for="id_email">Email:</label> <input type="text" name="email" id="id_email" /></li>
<li><label for="id_message">Message:</label> <input type="text" name="message" id="id_message" /></li>
>>> print f.as_p()
<p><label for="id_subject">Subject:</label> <input type="text" name="subject" id="id_subject" /></p>
<p><label for="id_email">Email:</label> <input type="text" name="email" id="id_email" /></p>
<p><label for="id_message">Message:</label> <input type="text" name="message" id="id_message" /></p>

>>> print f[‘subject‘]
<input type="text" name="subject" id="id_subject" />
>>> print f[‘message‘]
<input type="text" name="message" id="id_message" />

>>> f = ContactForm({‘subject‘: ‘Hello‘, ‘email‘: ‘adrian@example.com‘, ‘message‘: ‘Nice site!‘})

// 一旦你对一个Form实体赋值，你就得到了一个绑定form：
>>> f.is_bound
True

>>> f.is_valid()
True

>>> f = ContactForm({‘subject‘: ‘Hello‘, ‘message‘: ‘Nice site!‘})
>>> f.is_valid()
True

>>> f = ContactForm({‘subject‘: ‘Hello‘})
>>> f.is_valid()
False
>>> f = ContactForm({‘subject‘: ‘Hello‘, ‘message‘: ‘‘})
>>> f.is_valid()
False

>>> f = ContactForm({‘subject‘: ‘Hello‘, ‘message‘: ‘‘})
>>> f[‘message‘].errors
[u‘This field is required.‘]
>>> f[‘subject‘].errors
[]
>>> f[‘email‘].errors
[]

>>> f = ContactForm({‘subject‘: ‘Hello‘, ‘message‘: ‘‘})
>>> f.errors
{‘message‘: [u‘This field is required.‘]}

>>> f = ContactForm({subject‘: Hello, email: adrian@example.com, message: Nice site!})
>>> f.is_valid()
True
>>> f.cleaned_data
{message‘: uNice site!, email: uadrian@example.com, subject: uHello}

如果一个Form实体的数据是合法的，它就会有一个可用的cleaned_data属性， 这是一个包含干净的提交数据的字典。

github地址：
django_form

https://github.com/liuqiuchen/django

 

Django表单


联系
我们