django required field validation not show

Using Django Templates & Frontend
1

I have a problem with my field.
I have two field that have same field and widget. But one of the field didn’t show blank validation message.
Model:

class MagangLetter(models.Model):
    to=models.CharField(max_length=255)
    reason=models.CharField(max_length=255)
    start_date=models.DateField()
    end_date=models.DateField()

Form:

class MagangLetterForm(forms.ModelForm):
    class Meta:
        model=MagangLetter
        fields=['to','reason','start_date','end_date']
        widgets={
            'to':forms.Textarea(attrs={'class':'form-control','rows':'3','placeholder':'''#example'''}),
            'reason':forms.Textarea(attrs={'class':'form-control','rows':'3','placeholder':'''#example'''}),
            'start_date':forms.DateInput(attrs={'class':'form-control','type':'date'}),
            'end_date':forms.DateInput(attrs={'class':'form-control','type':'date'})
        }

View

class CreateLetterMagang(CreateView):
    model=MagangLetter
    form_class=MagangLetterForm
    template_name_suffix="_create_form"
    def get_context_data(self, **kwargs):
        context=super().get_context_data(**kwargs)
        form:MagangLetter=context['form']
        file_template=Template(services.letter.get_html_template('magang.docx'))
        date=datetime.datetime.now()
        day=settings.MONTHS[date.strftime('%m')]
        file_context=Context({
            'letter_number' : '........',
            'date_submitted' : f'{date:%d} {day} {date:%Y}',
            'to': form['to'],
            'name': self.request.user.get_full_name(),
            'nim': self.request.user.detail.id_number,
            'reason':form['reason'],
            'start_date': form['start_date'],
            'end_date': form['end_date'],
            'nip':'.............',
            'dosen':'...............',
            'sign': ''
        })
        html=file_template.render(file_context)
        soup = BeautifulSoup(html, 'html.parser')
        date_submit=soup.find(string=re.compile("Yogyakarta,"))
        p=soup.find(string=re.compile("#test"))
        date_submit.parent.parent['style']='width:15rem;'
        p.parent['class']='p-0'
        p=soup.find(string=re.compile("#test"))
        p.parent['class']='p-0'
        p=soup.find(string=re.compile("#test"))
        p.parent['class']='p-0'
        table=(p.next_element.next_element.next_element)
        table['class'].append('text-center ms-auto')
        table['style']='width:fit-content'
        date_forms=soup.find_all(type='date')
        for date_form in date_forms:
            date_form['class'].append('w-25')
            date_form['style']='min-width:fit-content;'
        context['docx']=soup.prettify()
        return context

Template:

{% block body %}
<div class="row content d-block overflow-auto">
    <div class="card p-3" style="width:40rem;">
        <form method='post'>
            {% csrf_token %}
            {{docx|safe}}
            <input type='submit' class='btn btn-primary' value='Buat Surat'></input>
        </form>
    </div>
</div>
{% endblock body %}

to field not showing validation message.
reason field showing validation message.
image

How do I show this validation on both field?

2

in form.py where you have ‘to’: add attribute required inside attrs:

to.widget.attrs['required'] = 'required'

or you can add the required in the model itself.