How do I check that an image exists and delete it before I add a new image - Django

Question

I have a view for an account profile. I'd like the user to be able to edit an image once they've added one. I have the edit code. Once a user edits an image, it adds that image to the db, but doesn't remove the previous image.

So the question is, how do I do the following:

Check to see if an image exists If it does delete it Add the new image

My view is located below, any suggestions are welcome.

@login_required def profile_img_edit(request, username, id): '''Edit a Profile Image''' messages.success(request, "Your changes were saved!") user = get_object_or_404(User, username=username) if request.user != user: return permission_denied(request) profile_img = get_object_or_404(ProfileImage, user=user, id=id) if request.method == 'POST': form = Profile_ImageEditForm(request.POST, request.FILES, instance=profile_img) if form.is_valid(): form.save() return HttpResponseRedirect( reverse('profile_img', kwargs={ 'username': request.user.username, 'id': profile_img.id})) else: form = Profile_ImageEditForm() return render_to_response('accounts/profile_img_edit.html', { 'form':form, 'object':profile_img }, context_instance=RequestContext(request))

Are you actually storing the images in the database, or are you storing paths to the image files? ImageField stores paths. Also, you could call this a feature, "non-destructive editing". It's all the rage. :) — mwcz
– mwcz, Commented Jul 29, 2011 at 14:55
The idea is to actually keep the image n the server, just in case. But to remove the record from the db. — Dave Merwin
– Dave Merwin, Commented Jul 30, 2011 at 14:42

rolling stone · Accepted Answer · 2011-07-30 21:09:38Z

1

Instead of adding a new profile_img instance just update the old one in the db:

ProfileImg.objects.filter(user=user).update(img_path='new_image_path')

Not sure if you already are but you should be connecting your ProfileImg model to your User model using ForeignKey .

edited Jul 30, 2011 at 21:09

answered Jul 29, 2011 at 15:45

rolling stone

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3 Comments

Dave Merwin Over a year ago

I did mean from the database. Removing the record of it. It can stay on the server, that's fine. As long as the record of it is removed from the db.

rolling stone Over a year ago

nice, thats actually much simpler! just use the update method in your query (revised answer to reflect)

rolling stone Over a year ago

@Dave Merwin just added a new answer, let me know if that works for you.

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