How to show error messages in a custom signup template in Django - django

Question

I'm trying to show error message in my custom signup template. Just to verify my below codes work, I used the {{ form.as_table }} and it shows error message properly. However, when I use my custom signup template, it doesn't show any error message when I cause an error on purpose on the signup form.
HTML
<form class="form-signin" method="POST">
{% csrf_token %}
<div class="container">
<div class="jumbotron">
<a class="navbar-brand js-scroll-trigger" href="{% url 'boutique:index' %}"><img width="165" height="30" src="{% static 'boutique/img/modvisor_logo_black.png' %}"></a>
<br><br>
<div class="text-center mb-4">
<h1 class="h3 mb-3 font-weight-normal">Join Modvisor</h1>
<p class="error-message">
{% if form.non_field_errors %}
{% for error in form.non_field_errors %}
{{ error }}
{% endfor %}
{% endif %}
</p>
</div>
<div class="form-label-group">
<input type="text" id="inputEmail" class="form-control" name="username" placeholder="Email address" required autofocus>
<label for="inputEmail">Email</label>
</div>
<div class="form-label-group">
<input type="password" id="inputPassword1" class="form-control" name="password1" placeholder="Password" required>
<label for="inputPassword">Password</label>
</div>
<div class="form-label-group">
<input type="password" id="inputPassword2" class="form-control" name="password2" placeholder="Password" required>
<label for="inputPassword">Confirm Password</label>
</div>
<!--
<div class="form-label-group">
<input type="password" id="inputPassword" class="form-control" name="password2" placeholder="Password" required>
<label for="inputPassword">Confirm Password</label>
</div>
<div class="checkbox mb-3">
<label>
<input type="checkbox" value="remember-me"> Remember me
</label>
</div>
-->
<button class="btn btn-success btn-block" type="submit">Sign Up</button>
<br>
<button class="btn btn-secondary btn-block" type="button">Back</button>
<p class="mt-5 mb-3 text-muted text-center">© 2018 Modvisor All Rights Reserved.</p></p>
</div>
</div>
</form>
forms.py
class SignupForm(UserCreationForm):
class Meta(UserCreationForm.Meta):
fields = UserCreationForm.Meta.fields
views.py
def signup(request):
if request.method == 'POST':
form = SignupForm(request.POST)
if form.is_valid():
form.save()
return redirect(settings.LOGIN_URL)
else:
form = SignupForm()
return render(request, 'accounts/register.html', {'form': form})

Answer 1

You should use form.errors.field_name for errors related to specific field. Like for error on username field, it will be form.errors.username
You HTML will look like
<div class='error'>{{form.errors.username}}</div>
<div class="form-label-group">
<input type="text" id="inputEmail" class="form-control" name="username" placeholder="Email address" required autofocus>
<label for="inputEmail">Email</label>
</div>