Python Django表单为空时不显示错误

我有Django表单，但当它们为空时，它们不会变成红色或显示错误（它们是必需的）。我有点确定该怎么办

views.py

def lOut(request):
    if request.user.is_authenticated():
        context = {
            "extendVar":"baseLoggedIn.html",
        }
    if request.user.is_authenticated()==False:
        form=registerForm(request.POST or None) 
        if form.is_valid():
            email = form.cleaned_data['email']
            print ("yup")
        elif form.is_valid()==False:
            print ("nup")
            print (form.errors)
        print("eh")     
        context= {
            "extendVar":"baseNotLoggedIn.html",
            "form":form,
        }

base.html：

{% extends extendVar %}

{% block title %}
    {{ block.super }} lagro
{% endblock %}

{% block fname %}
    {{ form.fname }}
{% endblock %}

{% block lname %}
    {{ form.lname }}
{% endblock %}

{% block email %}
    {{ form.email }}
{% endblock %}

{% block emailConfirm %}
    {{ form.emailConfirm }}
{% endblock %}

{% block password %}
    {{ form.password }}
{% endblock %}

baseNotLoggedIn.html

<form method="post" action="{% url 'try3' %}">
  {% csrf_token %}
  <div class="row row-buffer">
      <div class="col-sm-6" style="padding-right:5px;" >
        {% block fname %} {% endblock %}                
        <!-- <input class="form-control" placeholder="First Name" id="fname"> -->
      </div>

      <div class="col-sm-6" style="padding-left:5px;">
        {% block lname %} {% endblock %}
        <!-- <input class="form-control" placeholder="Last Name" id="lname"> -->
      </div>

    </div>
    <div class="row row-buffer">
      <div class="col-sm-12 form-group-lg">
        {% block email %} {% endblock %}
        <!-- <input class="form-control" placeholder="Email" id="email"> -->

      </div>
    </div>

    <div class="row row-buffer">
      <div class="col-sm-12 form-group-lg">
        {% block emailConfirm %} {% endblock %}
      </div>
    </div>

    <div class="row row-buffer">
      <div class="col-sm-12 form-group-lg">
        {% block password %} {% endblock %}                
        <!-- <input type="password" class="form-control" placeholder="Password" id="password"> -->
      </div>
    </div>

    <div class="row row-buffer">
      <div class="col-sm-12 form-group-lg">
        <button type = "submit" class="btn btn-success btn-lg" style="outline-width:0;">Submit</button>
      </div>
    </div>
  </form>

---

它没有显示，因为您没有在模板中呈现任何错误。引述自：

您需要确保我们处理每个字段和字段的任何错误 整个表单的所有错误。注{form.non_field_errors} 在表单和模板的顶部，查找每个模板上的错误 领域使用{{form.name\u of_field.errors}显示表单列表 错误

---

阅读以了解如何在模板中呈现表单错误。

将forms.py更改为此

class registerForm(forms.Form):
    fname = forms.CharField(max_length=256, label="", required=True, widget=forms.TextInput(attrs={'class': 'form-control','placeholder': 'First Name','required': True}))
    lname = forms.CharField(max_length=256, label="", required=True, widget=forms.TextInput(attrs={'class': 'form-control','placeholder': 'Last Name','required': True}))
    email = forms.EmailField(max_length=256, label="", required=True, widget=forms.EmailInput(attrs={'class': 'form-control','placeholder': 'Email','required': True}))
    emailConfirm = forms.EmailField(max_length=256, label="", required=True, widget=forms.EmailInput(attrs={'class': 'form-control','placeholder': 'Confirm email','required': True}))
    password = forms.CharField(max_length=256, label="", required=True, widget=forms.PasswordInput(attrs={'class': 'form-control','placeholder': 'Password','required': True}))

注意：添加“必需”：符合您的属性

看这个

>>> name = forms.TextInput(attrs={'required': True})
>>> name.render('name', 'A name')
'<input name="name" type="text" value="A name" required />'

>name=forms.TextInput（attrs={'required'：True}）
>>>name.render（'name'，'A name'）
''

---

来源：

哦，好的，非常感谢！现在它起作用了。一个简单的问题：对于表单，您是使用注册redux之类的第三方，还是只制作自己的表单？我更喜欢自己的表单。

>>> name = forms.TextInput(attrs={'required': True})
>>> name.render('name', 'A name')
'<input name="name" type="text" value="A name" required />'