from django.http import HttpResponseRedirect from django.shortcuts import render_to_response from django.template import RequestContext from django.utils.translation import ugettext as _ from django.conf import settings from django.contrib.auth.decorators import login_required from avatar.forms import PrimaryAvatarForm, DeleteAvatarForm, UploadAvatarForm from avatar.models import Avatar from avatar.settings import AVATAR_MAX_AVATARS_PER_USER, AVATAR_DEFAULT_SIZE from avatar.signals import avatar_updated from avatar.util import get_primary_avatar, get_default_avatar_url, \ invalidate_cache def _get_next(request): """ The part that's the least straightforward about views in this module is how they determine their redirects after they have finished computation. In short, they will try and determine the next place to go in the following order: 1. If there is a variable named ``next`` in the *POST* parameters, the view will redirect to that variable's value. 2. If there is a variable named ``next`` in the *GET* parameters, the view will redirect to that variable's value. 3. If Django can determine the previous page from the HTTP headers, the view will redirect to that previous page. """ next = request.POST.get('next', request.GET.get('next', request.META.get('HTTP_REFERER', None))) if not next: next = request.path return next def _get_avatars(user): # Default set. Needs to be sliced, but that's it. Keep the natural order. avatars = Avatar.objects.filter(emailuser=user.email) # Current avatar primary_avatar = avatars.order_by('-primary')[:1] if primary_avatar: avatar = primary_avatar[0] else: avatar = None if AVATAR_MAX_AVATARS_PER_USER == 1: avatars = primary_avatar else: # Slice the default set now that we used the queryset for the primary avatar avatars = avatars[:AVATAR_MAX_AVATARS_PER_USER] return (avatar, avatars) @login_required def add(request, extra_context=None, next_override=None, upload_form=UploadAvatarForm, *args, **kwargs): if extra_context is None: extra_context = {} avatar, avatars = _get_avatars(request.user) upload_avatar_form = upload_form(request.POST or None, request.FILES or None, user=request.user) if request.method == "POST" and 'avatar' in request.FILES: if upload_avatar_form.is_valid(): avatar = Avatar( emailuser = request.user.username, primary = True, ) image_file = request.FILES['avatar'] avatar.avatar.save(image_file.name, image_file) avatar.save() # request.user.message_set.create( # message=_("Successfully uploaded a new avatar.")) avatar_updated.send(sender=Avatar, user=request.user, avatar=avatar) return HttpResponseRedirect(next_override or _get_next(request)) return render_to_response( 'avatar/add.html', extra_context, context_instance = RequestContext( request, { 'avatar': avatar, 'avatars': avatars, 'upload_avatar_form': upload_avatar_form, 'next': next_override or _get_next(request), } ) ) @login_required def change(request, extra_context=None, next_override=None, upload_form=UploadAvatarForm, primary_form=PrimaryAvatarForm, *args, **kwargs): if extra_context is None: extra_context = {} avatar, avatars = _get_avatars(request.user) if avatar: kwargs = {'initial': {'choice': avatar.id}} else: kwargs = {} upload_avatar_form = upload_form(user=request.user, **kwargs) primary_avatar_form = primary_form(request.POST or None, user=request.user, avatars=avatars, **kwargs) if request.method == "POST": updated = False if 'choice' in request.POST and primary_avatar_form.is_valid(): avatar = Avatar.objects.get(id= primary_avatar_form.cleaned_data['choice']) avatar.primary = True avatar.save() updated = True # request.user.message_set.create( # message=_("Successfully updated your avatar.")) if updated: avatar_updated.send(sender=Avatar, user=request.user, avatar=avatar) return HttpResponseRedirect(next_override or _get_next(request)) return render_to_response( 'avatar/change.html', extra_context, context_instance = RequestContext( request, { 'avatar': avatar, 'avatars': avatars, 'upload_avatar_form': upload_avatar_form, 'primary_avatar_form': primary_avatar_form, 'next': next_override or _get_next(request), } ) ) @login_required def delete(request, extra_context=None, next_override=None, *args, **kwargs): if extra_context is None: extra_context = {} avatar, avatars = _get_avatars(request.user) delete_avatar_form = DeleteAvatarForm(request.POST or None, user=request.user, avatars=avatars) if request.method == 'POST': if delete_avatar_form.is_valid(): ids = delete_avatar_form.cleaned_data['choices'] if unicode(avatar.id) in ids and avatars.count() > len(ids): # Find the next best avatar, and set it as the new primary for a in avatars: if unicode(a.id) not in ids: a.primary = True a.save() avatar_updated.send(sender=Avatar, user=request.user, avatar=avatar) break # NOTE: `Avatar.objects.filter(id__in=ids).delete()` will NOT work # correctly. Sinct delete() on QuerySet will not call delete # method on avatar object. for a in Avatar.objects.filter(id__in=ids): a.delete() # request.user.message_set.create( # message=_("Successfully deleted the requested avatars.")) return HttpResponseRedirect(next_override or _get_next(request)) return render_to_response( 'avatar/confirm_delete.html', extra_context, context_instance = RequestContext( request, { 'avatar': avatar, 'avatars': avatars, 'delete_avatar_form': delete_avatar_form, 'next': next_override or _get_next(request), } ) ) def render_primary(request, extra_context={}, user=None, size=AVATAR_DEFAULT_SIZE, *args, **kwargs): size = int(size) avatar = get_primary_avatar(user, size=size) if avatar: # FIXME: later, add an option to render the resized avatar dynamically # instead of redirecting to an already created static file. This could # be useful in certain situations, particulary if there is a CDN and # we want to minimize the storage usage on our static server, letting # the CDN store those files instead return HttpResponseRedirect(avatar.avatar_url(size)) else: url = get_default_avatar_url() return HttpResponseRedirect(url)