class VisitCreate(CreateView):
    model = Visit
    fields = ['fk_visit_main', 'visit_date', 'visit_progress_notes']
    success_url = reverse_lazy('clincher:main')

    def get_initial(self):
        return self.request.GET

class Visit(models.Model):
fk_visit_main = models.ForeignKey(Main, on_delete=models.CASCADE, verbose_name=('Patient Name'))
visit_date = models.DateField()
visit_label = models.CharField(max_length=256, blank=True, null=True)
visit_types_list = (
    (str(1), 'Consultation'),
    (str(2), 'Procedure'),
    (str(3), 'Administrative'),)
visit_type = models.CharField(
    max_length=256,
    choices=visit_types_list,
    default=1,)
visit_progress_notes = models.TextField(max_length=10000,
                               blank=True)
outcomes = models.BooleanField(default=False)

def __str__(self):
    return str(self.visit_label)

def get_absolute_url(self):
    return reverse('clincher:main-detail', kwargs={'pk': self.pk})