django学习笔记6:表单

喜欢ヅ旅行 2022-09-22 14:52 184阅读 0赞

Django表单

先在app下新建一个forms.py

mytest\\test1\\forms.py

from django import forms
    
    class AddForm(forms.Form):
        a = forms.IntegerField()
        b = forms.IntegerField()

导入相应的库，定义表单输入的类型

修改mytest\\test1\\veiws.py

#coding:utf-8
    from django.shortcuts import render
    from django.http import HttpResponse,HttpResponseRedirect
    from django.core.urlresolvers import reverse
    from .forms import AddForm
    
    def index(request):
        return HttpResponse("hello world 你好")
    
    def add(request):
        a = request.GET['a']
        b = request.GET['b']
        c = int(a)+int(b)
        return HttpResponse(str(c))
    
    def add2(request, a, b):
        c = int(a) + int(b)
        return HttpResponse(str(c))
    
    def old_add2(request,a,b):
        return HttpResponseRedirect(
            reverse('add2',args=(a,b))
            )
    
    def home(request):
        if request.method =='POST':#数据提交方式
            form = AddForm(request.POST)#包含提交数据
            if form.is_valid():#表单数据是否有效
                a = form.cleaned_data['a']#获取表单数据
                b = form.cleaned_data['b']
                return HttpResponse(str(int(a)+int(b)))
        else:
            form = AddForm()#如果没有提交行为就清空表单
        return render(request,'home.html',{'form':form})

导入刚才编写的forms模块，获取表单数据再操作

视图函数接受到表单提交会执行提交后额程序，没有任何提交就清空表单

修改mytest\\test1\\templates\\home.html

<html>
        {% include 'jcheng.html' %}
        <body>
            {% for i in lista %}
                {
       {i}}
                {% if not forloop.last %}
                ,
                {% endif %}
            {% empty %}
                <li>列表为空</li>
            {% endfor %}
            <br>
            当前的URL：{
       {request.path}}
            <br>
            获取当前GET参数：{
       { request.GET.urlencode }}
            <br>
            hello wolrd 你好！!!!!!
            <br>
            <form  method="post">
                {% csrf_token %}
                {
       { form}}
                <input type="submit" value="OK">
            </form>
        </body>
    </html>

\{% csrf\_token %\}是一个表单保护机制，应该每个表单都需要的

url.py不变

url(r'^home/$',test1\_views.home,name='home')

浏览器输入127.0.0.1:8000/home/  
![Center][]  
输入数字后提交会跳转页面  
![Center 1][]

[Center]: /images/20220721/325aa9d0c266427cbfba5e63b1dd6b3c.png
[Center 1]: /images/20220721/6ba81b31bfcf4b599883ef895f987733.png