Django---简单from表单提交

表单提交可能会报错，注意一行代码就可以解决：

简单配置路由：

简单表单提交：

<form action="/index/" method="post">
    <p><input type="text" name="username" placeholder="请输入用户名"></p>
    <p><input type="text" name="password" placeholder="请输入密码"></p>
    <p><input type="submit" value="提交"></p>
</form>

可见上面的提交还是提交到当前方法：可以通过判断提交方式来判断是提交表单还是请求页面：

def index(request):
    #return HttpResponse("hello word")
    if request.method == 'POST':
        u = request.POST['username']
        p = request.POST['password']
        print(u,p)
    return render(request,'index.html')

这种接受如果，接受不到就会报错，所以都是这样接受的：

def index(request):
    #return HttpResponse("hello word")
    if request.method == 'POST':
        u = request.POST.get('username',None)
        p = request.POST.get('password',None)
        print(u,p)
        if u =='' and p == '':
            from django.shortcuts import redirect
            return redirect("http://www.baidu.com")
    return render(request,'index.html')

示例demo：

from django.shortcuts import render
from django.shortcuts import HttpResponse
#coding=utf-8
def index(request):
    #return HttpResponse("hello word")
    error_msg = ''
    if request.method == 'POST':
        u = request.POST.get('username',None)
        p = request.POST.get('password',None)
        print(u,p)
        if u =='' and p == '':
            from django.shortcuts import redirect
            return redirect("/index/")
        else:
            error_msg = "failse to login"
    return render(request,'index.html',{'error_msg':error_msg})

模板：

<form action="/index/" method="post">
    <p><input type="text" name="username" placeholder="请输入用户名"></p>
    <p><input type="text" name="password" placeholder="请输入密码"></p>
    <p><input type="submit" value="提交">{{ error_msg }}</p>
</form>