Django

login_from CaptchaTestForm() return render(request, login.html ,{ login_from :login_from}) def post(self, request, *args, **kwargs): login_from LoginFrom(request.POST) if login_from.is_valid(): # 判断字符是否通过 user authenticate(username login_from.cleaned_data[ username ], password login_from.cleaned_data[ password ]) if user is not None: 查询到用户 login(request, user) # 进行登录 return HttpResponseRedirect(reverse( index )) else: return render(request, login.html , { msg : 用户名或密码错误 , login_from :login_from}) else: return render(request, login.html , { login_from :login_from})

还记得在最开始的时候我们举的第三条例子 在froms中我们就可以通过对from对象来首先前段显示错误信息和上一次请求的值。

 form class tab-form action {% url login %} method post autocomplete off id form1 
 div class form-group marb20 {% if login_from.errors.username %}errorput{% endif %} 
 input name username id account_l type text value {{ login_from.username.value }} placeholder 手机号/邮箱 / 
 /div 
 div class form-group marb8 {% if login_from.errors.password %}errorput{% endif %} 
 input name password id password_l type password value {{ login_from.password.value }} placeholder 请输入您的密码 / 
 /div 
 div class error btns login-form-tips id jsLoginTips {% if login_from.errors %}{% for key,error in login_from.errors.items %}{{ error }}{% endfor %}{% else %}{{ msg }}{% endif %} /div 
 div class auto-box marb38 
 a class fr href forgetpwd.html 忘记密码 /a 
 /div 
 input class btn btn-green id jsLoginBtn type submit value 立即登录 / 
 /form