Django Forms - how to add the + sign for a Many2Many field - django

Question

enter image description hereRelated to Django Forms and Many2Many
I have tried to look for ways to add the + to my django form when I want to add a new post to my webpage.
What I'm looking for is a similar function as the one in admin module. See picture.
I have tried to read though the docs but not sure what to look for. Have anybody build something similar?
my model looks like this
class Wine_taste(models.Model):
title = models.CharField(max_length=128, null=True, blank=True)
author = models.ForeignKey(Author, on_delete=models.CASCADE)
category = models.ManyToManyField('Wine_Category', verbose_name='Kind of Wine',related_name='wcategory')
subcategory = models.ForeignKey('Wine_SubCategory', verbose_name='Wine type',on_delete=models.SET_NULL, null=True, blank=True)
review = models.TextField()
producer_taste = models.ForeignKey('Wine_Producer', verbose_name='Producer or shipper', on_delete=models.SET_NULL, null=True, blank=True )
grape_taste = models.ManyToManyField('Wine_Grapes', verbose_name='Grapes')
country_taste = models.ForeignKey('Wine_Country', verbose_name='Country of origin', on_delete=models.SET_NULL, null=True, blank=True )
sweetness = models.PositiveSmallIntegerField(choices=LEVELRATE_CHOICES, verbose_name='Rate Sweetness')
acid = models.PositiveSmallIntegerField(choices=LEVELRATE_CHOICES, verbose_name='Rate acid level')
fruit = models.PositiveSmallIntegerField(choices=LEVELRATE_CHOICES, verbose_name='Rate fruitness')
taste = models.PositiveSmallIntegerField(choices=RATE_CHOICES, verbose_name='Rate taste')
overall = models.PositiveSmallIntegerField(choices=RATE_CHOICES, verbose_name='Overall rate')
thumbnail = models.ImageField()
timestamp = models.DateTimeField(auto_now_add=True)
featured = models.BooleanField()
previous_post = models.ForeignKey('self', related_name='previous', on_delete=models.SET_NULL, null=True, blank=True)
next_post = models.ForeignKey('self', related_name='next', on_delete=models.SET_NULL, null=True, blank=True)
def __str__(self):
return self.title
def get_absolute_url(self):
return reverse('wine:wine-dyn', kwargs={"id": self.id})
def get_update_url(self):
return reverse('wine:wine-update', kwargs={"id": self.id})
def get_delete_url(self):
return reverse('wine:wine-delete', kwargs={"id": self.id})
def save(self, *args, **kwargs):
super().save(*args, **kwargs)
img = Image.open(self.thumbnail.path)
if img.height > 400:
new_height = 400
new_width = new_height / img.height * img.width
output_size = ((new_height, new_width))
img.thumbnail(output_size)
img.save(self.thumbnail.path)
#property
def get_comments(self):
return self.comments.all().order_by('-timestamp')
#property
def comment_count(self):
return Comment.objects.filter(post=self).count()
#property
def view_count(self):
return PostView.objects.filter(post=self).count()
Blockquote
this is my view:
def wine_detailed_create(request):
title = 'Create'
form = CreateForm(request.POST or None, request.FILES or None)
author = get_author(request.user)
if request.method == 'POST':
if form.is_valid():
form.instance.author = author
form.save()
return redirect (reverse('wine:wine-dyn', kwargs={'id': form.instance.id}))
context = {
'title': title,
'form': form
}
return render(request, 'wine/wine_create.html', context)
and my forms:
class CreateForm(forms.ModelForm):
class Meta:
model = Wine_taste
fields = ('title',
'country_taste',
'category',
'subcategory',
'producer_taste',
'grape_taste',
'review',
'thumbnail',
'sweetness',
'acid',
'fruit',
'taste',
'overall',
'featured',
'previous_post',
'next_post',)
Blockquote
br
Lars