Django中Form验证

Form验证

第一种操作：主要是这三个函数

is_valid()

cleaned_data

errors

from xiaoqing import  models

def form(request):

    if request.method == "GET":
        return render(request,'form.html')
    elif request.method == "POST":
        obj = FM(request.POST)
        r1 = obj.is_valid()     #is_valid() 让这个函数去验证  返回False 或者 True
        print(r1)
        if r1:
            print(r1)
            print(obj.cleaned_data)  #cleaned_data表示返回的正确的信息
            # models.Host.objects.create(**obj.cleaned_data)
        else:
            print(obj.errors.as_json())     #errors表示错误信息

            return render(request,'form.html',{'obj':obj,})
        return redirect('/xiaoqing/host')

    <form action="/xiaoqing/form/" method="post">
        {% csrf_token %}
{#        {% for row in error_dict.keys %}#}
        <p><input type="text" placeholder="请输入用户名" name="user"/><span style="color: red">{{ obj.errors.user.0 }}</span></p>
        <p><input type="password" placeholder="请输入密码" name="pwd"/><span style="color: red">{{ obj.errors.pwd.0 }}</span></p>
        <p><input type="text" placeholder="请输入邮箱" name="email"/><span style="color: red">{{ obj.errors.email.0 }}</span></p>
        <input type="submit" value="提交"/>
{#        {% endfor %}#}
    </form>

form.html