ValidationError message doesn't appear in my own form - django

Question

I created a custom registration form:
class MyRegistrationForm(UserCreationForm):
mobile = models.CharField(max_length=16)
address = models.CharField(max_length=100)
class Meta():
model = CustomUser
fields = ['username', 'password1', 'password2', 'first_name', 'last_name', 'email', 'mobile', 'address']
def clean_mobile(self):
mobile = self.cleaned_data['mobile']
if CustomUser.objects.filter(mobile=mobile).exists():
raise ValidationError('Mobile already exists')
return mobile
def save(self, commit=True):
user = super(MyRegistrationForm, self).save(commit=False)
user.mobile = self.cleaned_data['mobile']
user.address = self.cleaned_data['address']
if commit:
user.save()
return user
And in my template, I don't write just `{{form}}', instead I use my bootstrap template for registration. It looks like:
<form class="form-horizontal" action="{% url 'register' %}" method="post">
{% csrf_token %}
<div class="control-group">
<label class="control-label" for="username1" >Ім'я користувача <sup>*</sup></label>
<div class="controls">
<input type="text" id="username1" placeholder="Нік" name="username">
</div>
</div>
<div class="control-group">
<label class="control-label" for="password_1" >Пароль <sup>*</sup></label>
<div class="controls">
<input type="password" id="password_1" placeholder="Введіть пароль" name="password1">
</div>
</div>
<div class="control-group">
<label class="control-label" for="password_2" >Повторіть пароль <sup>*</sup></label>
<div class="controls">
<input type="password" id="password_2" placeholder="Повторіть пароль" name="password2">
</div>
</div>
But when clean_mobile method is called and raise ValidationError, no errors aren't showed. How to solve this issue? Or maybe I can use in template {{form}} but I need to use bootstrap css?

Answer 1

You need to include {{ form.mobile.errors }} to display errors for your mobile field.
See the working with form templates docs for more information.
You might want to investigate django crispy forms, which makes it easy to render bootstrap forms.