Django - Form组件验证

示例：

class FM(forms.Form):
    user = forms.CharField(error_messages={'required':'用户名不能为空'})
    user = forms.CharField(
        min_length=6,
        max_length=12,
        error_messages={'required':'密码不能为空', 'invalid':'密码格式错误'}
    )
    email = forms.EmailField(error_messages={'required':'邮箱不能为空', 'invalid':'邮箱格式错误'})
    

def fm(request):
    if request.method == 'GET':
        return render(request, 'fm.html')
    elif request.method == 'POST':