how to edit (remove) entries from a django formset - django

Question

Intro: I have a post which can have multiple images I achieving this with the help of 2 models namely. Post and Prep. The post model has a user, title, a message and a post_image
class Post(models.Model):
user = models.ForeignKey(User, related_name='posts')
title = models.CharField(max_length=250, unique=True)
message = models.TextField()
post_image = models.ImageField(upload_to='post_images/')
I am using another model to get additional images called Prep This can have multiple images.
class Prep (models.Model): #(Images)
post = models.ForeignKey(Post, on_delete=models.CASCADE, related_name='post_prep')
image = models.ImageField(upload_to='post_prep_images/', blank=True, null=True)
image_title = models.CharField(max_length=100)
image_description = models.CharField(max_length=250)
However unlike before each of the images from the prep model has a image_title and a image_description
The Issue: I am able to create a post successfully and also almost edit the post with one exception I cannot reduce the number of images.
If I have 3 Prep images I can add more images up to the max allowed
I can edit existing images
I cannot reduce the number of prep images
I get an error in the form
This field is required.
How do I fix this error
my post_edit view
def post_edit(request, slug):
post = get_object_or_404(Post, slug=slug)
ImageFormSet = modelformset_factory(Prep, fields=('image', 'image_title', 'image_description'), extra=7, max_num=7,
min_num=2)
if post.user != request.user:
raise Http404()
if request.method == "POST":
form = PostEditForm(request.POST or None, request.FILES or None, instance=post)
formset = ImageFormSet(request.POST or None, request.FILES or None)
if form.is_valid() and formset.is_valid():
form.save()
data = Prep.objects.filter(post=post)
for index, f in enumerate(formset):
if f.cleaned_data:
if f.cleaned_data['id'] is None:
photo = Prep(post=post, image=f.cleaned_data.get('image'), image_title=f.cleaned_data.get('image_title'),
image_description=f.cleaned_data.get('image_description'))
photo.save()
#I thought the below code will do the trick but it doesn't seem to be
elif f.cleaned_data['image'] is False or f.cleaned_data['image_title'] is False or f.cleaned_data['image_description'] is False:
photo = Prep.objects.get(id=data[index].id)
photo.image.delete()
photo.image_title.delete()
photo.image_description.delete()
photo.id.delete()
else:
photo = Prep(post=post, image=f.cleaned_data.get('image'), image_title=f.cleaned_data.get('image_title'),
image_description=f.cleaned_data.get('image_description'))
d = Prep.objects.get(id=data[index].id)
d.image=photo.image
d.image_title=photo.image_title
d.image_description=photo.image_description
d.save()
return HttpResponseRedirect(post.get_absolute_url())
else:
form = PostEditForm(instance=post)
formset = ImageFormSet(queryset=Prep.objects.filter(post=post))
context = {'form': form, 'post': post, 'formset': formset}
return render(request, 'posts/post_edit.html', context)

Answer 1

can_delete=True, in modelformset_factory