CharField is not rendering in template - Django - django

Question

I have a date of birth field in my model but why it's not showing up in the template when I render it? The date_of_birth is inside Teacher model. And Do you have any good idea on date_of_birth field? Because right now I'm using charfield for that so I need to convert the DateInput to string so that I can add it into charfield.
here is my models.py
class Teacher(models.Model):
user = models.OneToOneField(CustomUser, on_delete=models.CASCADE, primary_key=True)
date_of_birth = models.CharField(max_length=100)
teacher_type = models.CharField(max_length=50
def __str__(self):
return self.user.email
my forms.py
class TeacherRegisterForm(UserCreationForm):
date_attr = {'class': 'form-control', 'id': 'dateofbirth-register', 'type': 'date'}
date_of_birth = forms.DateField(widget = forms.DateInput(attrs=date_attr))
teacher_type = forms.ChoiceField(label=_('Teacher Type'), choices=type_choice
class Meta(UserCreationForm):
model = CustomUser
fields = ['date_of_birth', 'teacher_type']
def save(self, commit=True):
user = super().save(commit=False)
user.is_teacher = True
user.save()
teacher = Teacher.objects.create(user=user)
teacher.date_of_birth += str(self.cleaned_data.get('date_of_birth'))
teacher.teacher_type += self.cleaned_data.get('teacher_type')
return user
views.py
#login_required
#teacher_required
def teacherInfoView(request):
template_name = "attendance/content/teacher/teacher_info.html"
teacher_info = Teacher.objects.filter(user=request.user)
context = {'teacher_info': teacher_info}
return render(request, template_name, context)
template
{% for info in teacher_info %}
<!-- firstname -->
<div class="row">
<div class="ml-5 mr-auto">
<h5>Name : {{ info.user.first_name }} {{ info.user.last_name }}</h5>
</div>
<div class="ml-5">
<h5>Email : {{ info.user.email }}</h5>
</div>
</div>
<div class="row">
<div class="ml-5">
<h5>Date Of Birth : {{ info.date_of_birth }}</h5>
</div>
<div class="ml-5">
<h5>Gender : {{ info.user.gender }}</h5>
</div>
</div>
{% endfor %}