在模板中显示自定义django表单错误

我正在编写一个视图向用户发送密码重置电子邮件。我正在检查用户输入的电子邮件是否使用了forms.py中的clean方法进行了注册，虽然我无法获得要在django模板中显示的自定义错误消息，但它仍在正常工作。在模板中显示自定义django表单错误

views.py

def send_forgotten_password_email(request): 
    heading = 'Reset Password' 
    if request.method == 'POST': 

     form = ForgottenPasswordForm(request.POST) 
     if form.is_valid(): 

      email = form.cleaned_data['email'] 

    form = ForgottenPasswordForm() 

    return render(request,'authentication/forms/forgotten_password.html',{ 
     'form':form, 
     'heading':heading, 
     })

forms.py

class ForgottenPasswordForm(forms.Form): 

    email = forms.CharField(
     label='Email:', 
     widget= forms.EmailInput(attrs={'class':'form-control','placeholder':'Enter email'}) 
     ) 

    def clean_email(self): 
     email = self.cleaned_data['email'] 
     email = get_object_or_none(User,email=email) 
     if not email: 
      raise forms.ValidationError("Email not found.") 
     return email

模板

{% extends "base.html" %} 
{% load static %} 

{% block title %} Forgotten Password {% endblock title %} 

{% block content %} 

<div class="row"> 
    <div class="col col-sm-12 col-md-5 col-lg-5"> 
     <div class="card"> 
      <div class="card-body"> 
      <h4 class="card-title">{{heading}}</h4> 
       <div class="alert alert-danger" role="alert"> 
        {{form.non_field_errors}} 
        {{form.errors}} 
        {{forms.errors}} 
        {{form.email.errors}} 
       </div> 
       <form method="POST"> 
        {% csrf_token %} 
        <div class="form-group"> 

        <label>{{form.email.label}}</label> 
         {{form.email}} 
        </div> 
       <button type="submit" class="btn btn-primary">Submit</button> 
       </form> 
      </div> 
     </div> 
    </div> 
</div> 




{% endblock content %}

来源

2017-10-08 thomaSmith

你需要移动之前的空初始形式的if语句：

# Added this 
form = ForgottenPasswordForm() 
if request.method == 'POST': 

    form = ForgottenPasswordForm(request.POST) 
    if form.is_valid(): 

     email = form.cleaned_data['email'] 

# Remove this line 
# form = ForgottenPasswordForm()

来源

2017-10-08 13:33:38

在模板中显示自定义django表单错误

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