bgneal@695: """Views for the user_photos application."""
bgneal@722: import json
bgneal@722:
bgneal@695: from django.conf import settings
bgneal@704: from django.contrib.auth import get_user_model
bgneal@695: from django.contrib.auth.decorators import login_required
bgneal@722: from django.http import (HttpResponse, HttpResponseForbidden,
bgneal@722: HttpResponseNotAllowed)
bgneal@704: from django.shortcuts import render, redirect, get_object_or_404
bgneal@704: from django.views.generic import ListView
bgneal@710: from django.views.decorators.http import require_POST
bgneal@704: from django.utils.decorators import method_decorator
bgneal@710: from django.contrib import messages
bgneal@695:
bgneal@695: from user_photos.forms import UploadForm
bgneal@704: from user_photos.models import Photo
bgneal@718: from user_photos.s3 import delete_photos
bgneal@695:
bgneal@695:
bgneal@695: @login_required
bgneal@695: def upload(request):
bgneal@695: """This view function receives an uploaded image file from a user.
bgneal@695: The photo will be resized if necessary and a thumbnail image will be
bgneal@695: created. The image and thumbnail will then be uploaded to the Amazon
bgneal@695: S3 service for storage.
bgneal@695:
bgneal@695: """
bgneal@695: form = None
bgneal@696: uploads_enabled = settings.USER_PHOTOS_ENABLED
bgneal@695:
bgneal@695: if uploads_enabled:
bgneal@695: if request.method == 'POST':
bgneal@696: form = UploadForm(request.POST, request.FILES, user=request.user)
bgneal@695: if form.is_valid():
bgneal@696: photo = form.save()
bgneal@696: return redirect(photo)
bgneal@695: else:
bgneal@696: form = UploadForm(user=request.user)
bgneal@695:
bgneal@695: return render(request, 'user_photos/upload_form.html', {
bgneal@695: 'enabled': uploads_enabled,
bgneal@695: 'form': form,
bgneal@695: },
bgneal@695: status=200 if uploads_enabled else 503)
bgneal@704:
bgneal@704:
bgneal@722: def upload_ajax(request):
bgneal@722: """This view is the ajax version of the upload function, above.
bgneal@722:
bgneal@722: We return a JSON object response to the client with the following name
bgneal@722: & value pairs:
bgneal@722: 'success' : false for failure and true for success
bgneal@722: 'msg' : string error message if success is false
bgneal@722: 'url' : the image URL as a string if success
bgneal@722:
bgneal@722: If a non-200 status code is returned the response will simply be a text
bgneal@722: string error message.
bgneal@722:
bgneal@722: """
bgneal@722: if not request.user.is_authenticated():
bgneal@724: return HttpResponseForbidden('Please login to use this service')
bgneal@722: if not request.is_ajax() or request.method != 'POST':
bgneal@724: return HttpResponseNotAllowed('This method is not allowed')
bgneal@722:
bgneal@722: ret = {'success': False, 'msg': '', 'url': ''}
bgneal@722: if settings.USER_PHOTOS_ENABLED:
bgneal@722: form = UploadForm(request.POST, request.FILES, user=request.user)
bgneal@722: if form.is_valid():
bgneal@722: photo = form.save()
bgneal@722: ret['success'] = True
bgneal@722: ret['url'] = photo.url
bgneal@722: else:
bgneal@722: # gather form error messages
bgneal@722: errors = []
bgneal@722: non_field_errors = form.non_field_errors().as_text()
bgneal@722: if non_field_errors:
bgneal@722: errors.append(non_field_errors)
bgneal@722: for field_errors in form.errors.values():
bgneal@722: errors.append(field_errors.as_text())
bgneal@722: ret['msg'] = '\n'.join(errors)
bgneal@722: else:
bgneal@722: ret['msg'] = 'Photo uploads are temporarily disabled'
bgneal@722:
bgneal@722: return HttpResponse(json.dumps(ret), content_type='application/json')
bgneal@722:
bgneal@722:
bgneal@704: class GalleryView(ListView):
bgneal@704: """A ListView for displaying a user's photos"""
bgneal@704:
bgneal@704: template_name = 'user_photos/gallery.html'
bgneal@704: context_object_name = 'photos'
bgneal@704: paginate_by = 50
bgneal@704: allow_empty = True
bgneal@704:
bgneal@704: def get_queryset(self):
bgneal@704: self.gallery_owner = get_object_or_404(get_user_model(),
bgneal@704: username=self.kwargs['username'])
bgneal@704: return Photo.objects.filter(user=self.gallery_owner).order_by('-upload_date')
bgneal@704:
bgneal@704: def get_context_data(self, **kwargs):
bgneal@704: context = super(GalleryView, self).get_context_data(**kwargs)
bgneal@704: context['gallery_owner'] = self.gallery_owner
bgneal@704: return context
bgneal@704:
bgneal@704: @method_decorator(login_required)
bgneal@704: def dispatch(self, *args, **kwargs):
bgneal@704: return super(GalleryView, self).dispatch(*args, **kwargs)
bgneal@710:
bgneal@710:
bgneal@710: @login_required
bgneal@710: @require_POST
bgneal@710: def delete(request):
bgneal@718: """A view function to allow a user to delete their own photos."""
bgneal@718:
bgneal@718: ret_view, username = 'user_photos-gallery', request.user.username
bgneal@718:
bgneal@718: if not settings.USER_PHOTOS_ENABLED:
bgneal@718: messages.error(request, "This function is disabled temporarily")
bgneal@718: return redirect(ret_view, username)
bgneal@718:
bgneal@710: photo_ids = []
bgneal@710: for photo_id in request.POST.getlist('photo_id'):
bgneal@710: try:
bgneal@710: n = int(photo_id)
bgneal@710: except ValueError:
bgneal@710: continue
bgneal@710: photo_ids.append(n)
bgneal@710:
bgneal@710: count = 0
bgneal@710: if photo_ids:
bgneal@710: qs = Photo.objects.filter(user=request.user, pk__in=photo_ids)
bgneal@718: count = len(qs)
bgneal@718: if count:
bgneal@718: delete_photos(qs)
bgneal@718: qs.delete()
bgneal@710:
bgneal@718: msg = "{} photo{} deleted".format(count, '' if count == 1 else 's')
bgneal@718: messages.add_message(request,
bgneal@718: messages.SUCCESS if count > 0 else messages.WARNING,
bgneal@718: msg)
bgneal@710:
bgneal@718: return redirect(ret_view, username)