moviewyrm/bookwyrm/views.py

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''' views for pages you can go to in the application '''
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import re
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from django.contrib.auth.decorators import login_required, permission_required
from django.contrib.postgres.search import TrigramSimilarity
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from django.core.paginator import Paginator
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from django.db.models import Avg, Q
from django.http import HttpResponseNotFound, JsonResponse
from django.core.exceptions import PermissionDenied
from django.shortcuts import get_object_or_404, redirect
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from django.template.response import TemplateResponse
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from django.views.decorators.csrf import csrf_exempt
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from django.views.decorators.http import require_GET
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from bookwyrm import outgoing
from bookwyrm.activitypub import ActivityEncoder
from bookwyrm import forms, models, books_manager
from bookwyrm import goodreads_import
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from bookwyrm.settings import PAGE_LENGTH
from bookwyrm.tasks import app
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from bookwyrm.utils import regex
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def get_user_from_username(username):
''' helper function to resolve a localname or a username to a user '''
try:
user = models.User.objects.get(localname=username)
except models.User.DoesNotExist:
user = models.User.objects.get(username=username)
return user
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def is_api_request(request):
''' check whether a request is asking for html or data '''
return 'json' in request.headers.get('Accept') or \
request.path[-5:] == '.json'
def server_error_page(request):
''' 500 errors '''
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return TemplateResponse(request, 'error.html', {'title': 'Oops!'})
def not_found_page(request, _):
''' 404s '''
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return TemplateResponse(request, 'notfound.html', {'title': 'Not found'})
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@login_required
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@require_GET
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def home(request):
''' this is the same as the feed on the home tab '''
return home_tab(request, 'home')
@login_required
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@require_GET
def home_tab(request, tab):
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''' user's homepage with activity feed '''
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try:
page = int(request.GET.get('page', 1))
except ValueError:
page = 1
suggested_books = get_suggested_books(request.user)
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activities = get_activity_feed(request.user, tab)
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paginated = Paginator(activities, PAGE_LENGTH)
activity_page = paginated.page(page)
prev_page = next_page = None
if activity_page.has_next():
next_page = '/%s/?page=%d#feed' % \
(tab, activity_page.next_page_number())
if activity_page.has_previous():
prev_page = '/%s/?page=%d#feed' % \
(tab, activity_page.previous_page_number())
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data = {
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'title': 'Updates Feed',
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'user': request.user,
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'suggested_books': suggested_books,
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'activities': activity_page.object_list,
'tab': tab,
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'next': next_page,
'prev': prev_page,
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}
return TemplateResponse(request, 'feed.html', data)
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def get_suggested_books(user, max_books=5):
''' helper to get a user's recent books '''
book_count = 0
preset_shelves = [
('reading', max_books), ('read', 2), ('to-read', max_books)
]
suggested_books = []
for (preset, shelf_max) in preset_shelves:
limit = shelf_max if shelf_max < (max_books - book_count) \
else max_books - book_count
shelf = user.shelf_set.get(identifier=preset)
shelf_books = shelf.shelfbook_set.order_by(
'-updated_date'
).all()[:limit]
if not shelf_books:
continue
shelf_preview = {
'name': shelf.name,
'books': [s.book for s in shelf_books]
}
suggested_books.append(shelf_preview)
book_count += len(shelf_preview['books'])
return suggested_books
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@login_required
@require_GET
def direct_messages_page(request, page=1):
''' like a feed but for dms only '''
activities = get_activity_feed(request.user, 'direct')
paginated = Paginator(activities, PAGE_LENGTH)
activity_page = paginated.page(page)
prev_page = next_page = None
if activity_page.has_next():
next_page = '/direct-message/?page=%d#feed' % \
activity_page.next_page_number()
if activity_page.has_previous():
prev_page = '/direct-messages/?page=%d#feed' % \
activity_page.previous_page_number()
data = {
'title': 'Direct Messages',
'user': request.user,
'activities': activity_page.object_list,
'next': next_page,
'prev': prev_page,
}
return TemplateResponse(request, 'direct_messages.html', data)
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def get_activity_feed(user, filter_level, model=models.Status):
''' get a filtered queryset of statuses '''
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if user.is_anonymous:
user = None
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if user:
following = models.User.objects.filter(
Q(followers=user) | Q(id=user.id)
)
else:
following = []
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activities = model
if hasattr(model, 'objects'):
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activities = model.objects
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activities = activities.filter(
deleted=False,
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).order_by(
'-published_date'
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)
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if filter_level == 'direct':
return activities.filter(
Q(user=user) | Q(mention_users=user),
privacy='direct'
)
# never show DMs in the regular feed
activities = activities.filter(~Q(privacy='direct'))
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if hasattr(activities, 'select_subclasses'):
activities = activities.select_subclasses()
if filter_level in ['friends', 'home']:
# people you follow and direct mentions
activities = activities.filter(
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Q(user__in=following, privacy__in=[
'public', 'unlisted', 'followers'
]) | Q(mention_users=user) | Q(user=user)
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)
elif filter_level == 'self':
activities = activities.filter(user=user, privacy='public')
elif filter_level == 'local':
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# everyone on this instance except unlisted
activities = activities.filter(
Q(user__in=following, privacy='followers') | Q(privacy='public'),
user__local=True
)
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else:
# all activities from everyone you federate with
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activities = activities.filter(
Q(user__in=following, privacy='followers') | Q(privacy='public')
)
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try:
activities = activities.filter(~Q(boosters__in=activities))
except ValueError:
pass
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return activities
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@require_GET
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def search(request):
''' that search bar up top '''
query = request.GET.get('q')
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if is_api_request(request):
# only return local book results via json so we don't cause a cascade
book_results = books_manager.local_search(query)
return JsonResponse([r.__dict__ for r in book_results], safe=False)
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# use webfinger for mastodon style account@domain.com username
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if re.match(regex.full_username, query):
outgoing.handle_remote_webfinger(query)
# do a local user search
user_results = models.User.objects.annotate(
similarity=TrigramSimilarity('username', query),
).filter(
similarity__gt=0.5,
).order_by('-similarity')[:10]
book_results = books_manager.search(query)
data = {
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'title': 'Search Results',
'book_results': book_results,
'user_results': user_results,
'query': query,
}
return TemplateResponse(request, 'search_results.html', data)
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@login_required
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@require_GET
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def import_page(request):
''' import history from goodreads '''
return TemplateResponse(request, 'import.html', {
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'title': 'Import Books',
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'import_form': forms.ImportForm(),
'jobs': models.ImportJob.
objects.filter(user=request.user).order_by('-created_date'),
'limit': goodreads_import.MAX_ENTRIES,
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})
@login_required
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@require_GET
def import_status(request, job_id):
''' status of an import job '''
job = models.ImportJob.objects.get(id=job_id)
if job.user != request.user:
raise PermissionDenied
task = app.AsyncResult(job.task_id)
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items = job.items.order_by('index').all()
failed_items = [i for i in items if i.fail_reason]
items = [i for i in items if not i.fail_reason]
return TemplateResponse(request, 'import_status.html', {
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'title': 'Import Status',
'job': job,
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'items': items,
'failed_items': failed_items,
'task': task
})
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@require_GET
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def login_page(request):
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''' authentication '''
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if request.user.is_authenticated:
return redirect('/')
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# send user to the login page
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data = {
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'title': 'Login',
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'login_form': forms.LoginForm(),
'register_form': forms.RegisterForm(),
}
return TemplateResponse(request, 'login.html', data)
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@require_GET
def about_page(request):
''' more information about the instance '''
data = {
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'title': 'About',
}
return TemplateResponse(request, 'about.html', data)
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@require_GET
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def password_reset_request(request):
''' invite management page '''
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return TemplateResponse(
request,
'password_reset_request.html',
{'title': 'Reset Password'}
)
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@require_GET
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def password_reset(request, code):
''' endpoint for sending invites '''
if request.user.is_authenticated:
return redirect('/')
try:
reset_code = models.PasswordReset.objects.get(code=code)
if not reset_code.valid():
raise PermissionDenied
except models.PasswordReset.DoesNotExist:
raise PermissionDenied
return TemplateResponse(
request,
'password_reset.html',
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{'title': 'Reset Password', 'code': reset_code.code}
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)
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@require_GET
def invite_page(request, code):
''' endpoint for sending invites '''
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if request.user.is_authenticated:
return redirect('/')
try:
invite = models.SiteInvite.objects.get(code=code)
if not invite.valid():
raise PermissionDenied
except models.SiteInvite.DoesNotExist:
raise PermissionDenied
data = {
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'title': 'Join',
'register_form': forms.RegisterForm(),
'invite': invite,
}
return TemplateResponse(request, 'invite.html', data)
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@login_required
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@permission_required('bookwyrm.create_invites', raise_exception=True)
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@require_GET
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def manage_invites(request):
''' invite management page '''
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data = {
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'title': 'Invitations',
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'invites': models.SiteInvite.objects.filter(user=request.user),
'form': forms.CreateInviteForm(),
}
return TemplateResponse(request, 'manage_invites.html', data)
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@login_required
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@require_GET
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def notifications_page(request):
''' list notitications '''
notifications = request.user.notification_set.all() \
.order_by('-created_date')
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unread = [n.id for n in notifications.filter(read=False)]
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data = {
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'title': 'Notifications',
'notifications': notifications,
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'unread': unread,
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}
notifications.update(read=True)
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return TemplateResponse(request, 'notifications.html', data)
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@csrf_exempt
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@require_GET
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def user_page(request, username):
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''' profile page for a user '''
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try:
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user = get_user_from_username(username)
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except models.User.DoesNotExist:
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return HttpResponseNotFound()
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if is_api_request(request):
# we have a json request
return JsonResponse(user.to_activity(), encoder=ActivityEncoder)
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# otherwise we're at a UI view
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try:
page = int(request.GET.get('page', 1))
except ValueError:
page = 1
shelf_preview = []
# only show other shelves that should be visible
shelves = user.shelf_set
is_self = request.user.id == user.id
if not is_self:
follower = user.followers.filter(id=request.user.id).exists()
if follower:
shelves = shelves.filter(privacy__in=['public', 'followers'])
else:
shelves = shelves.filter(privacy='public')
for user_shelf in shelves.all():
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if not user_shelf.books.count():
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continue
shelf_preview.append({
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'name': user_shelf.name,
'remote_id': user_shelf.remote_id,
'books': user_shelf.books.all()[:3],
'size': user_shelf.books.count(),
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})
if len(shelf_preview) > 2:
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break
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# user's posts
activities = get_activity_feed(user, 'self')
paginated = Paginator(activities, PAGE_LENGTH)
activity_page = paginated.page(page)
prev_page = next_page = None
if activity_page.has_next():
next_page = '/user/%s/?page=%d' % \
(username, activity_page.next_page_number())
if activity_page.has_previous():
prev_page = '/user/%s/?page=%d' % \
(username, activity_page.previous_page_number())
data = {
'title': user.name,
'user': user,
'is_self': is_self,
'shelves': shelf_preview,
'shelf_count': shelves.count(),
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'activities': activity_page.object_list,
'next': next_page,
'prev': prev_page,
}
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return TemplateResponse(request, 'user.html', data)
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@csrf_exempt
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@require_GET
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def followers_page(request, username):
''' list of followers '''
try:
user = get_user_from_username(username)
except models.User.DoesNotExist:
return HttpResponseNotFound()
if is_api_request(request):
return JsonResponse(user.to_followers_activity(**request.GET))
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data = {
'title': '%s: followers' % user.name,
'user': user,
'is_self': request.user.id == user.id,
'followers': user.followers.all(),
}
return TemplateResponse(request, 'followers.html', data)
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@csrf_exempt
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@require_GET
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def following_page(request, username):
''' list of followers '''
try:
user = get_user_from_username(username)
except models.User.DoesNotExist:
return HttpResponseNotFound()
if is_api_request(request):
return JsonResponse(user.to_following_activity(**request.GET))
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data = {
'title': '%s: following' % user.name,
'user': user,
'is_self': request.user.id == user.id,
'following': user.following.all(),
}
return TemplateResponse(request, 'following.html', data)
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@csrf_exempt
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@require_GET
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def status_page(request, username, status_id):
''' display a particular status (and replies, etc) '''
try:
user = get_user_from_username(username)
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status = models.Status.objects.select_subclasses().get(id=status_id)
except ValueError:
return HttpResponseNotFound()
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# the url should have the poster's username in it
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if user != status.user:
return HttpResponseNotFound()
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# make sure the user is authorized to see the status
if not status_visible_to_user(request.user, status):
return HttpResponseNotFound()
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if is_api_request(request):
return JsonResponse(status.to_activity(), encoder=ActivityEncoder)
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data = {
'title': 'Status by %s' % user.username,
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'status': status,
}
return TemplateResponse(request, 'status.html', data)
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def status_visible_to_user(viewer, status):
''' is a user authorized to view a status? '''
if viewer == status.user or status.privacy in ['public', 'unlisted']:
return True
if status.privacy == 'followers' and \
status.user.followers.filter(id=viewer.id).first():
return True
if status.privacy == 'direct' and \
status.mention_users.filter(id=viewer.id).first():
return True
return False
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@csrf_exempt
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@require_GET
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def replies_page(request, username, status_id):
''' ordered collection of replies to a status '''
if not is_api_request(request):
return status_page(request, username, status_id)
status = models.Status.objects.get(id=status_id)
if status.user.localname != username:
return HttpResponseNotFound()
return JsonResponse(
status.to_replies(**request.GET),
encoder=ActivityEncoder
)
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@login_required
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@require_GET
def edit_profile_page(request):
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''' profile page for a user '''
user = request.user
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form = forms.EditUserForm(instance=request.user)
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data = {
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'title': 'Edit profile',
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'form': form,
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'user': user,
}
return TemplateResponse(request, 'edit_user.html', data)
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@require_GET
def book_page(request, book_id):
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''' info about a book '''
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try:
page = int(request.GET.get('page', 1))
except ValueError:
page = 1
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try:
book = models.Book.objects.select_subclasses().get(id=book_id)
except models.Book.DoesNotExist:
return HttpResponseNotFound()
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if is_api_request(request):
return JsonResponse(book.to_activity(), encoder=ActivityEncoder)
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if isinstance(book, models.Work):
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book = book.get_default_edition()
if not book:
return HttpResponseNotFound()
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work = book.parent_work
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if not work:
return HttpResponseNotFound()
reviews = models.Review.objects.filter(
book__in=work.editions.all(),
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)
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# all reviews for the book
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reviews = get_activity_feed(request.user, 'federated', model=reviews)
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# the reviews to show
paginated = Paginator(reviews.filter(content__isnull=False), PAGE_LENGTH)
reviews_page = paginated.page(page)
prev_page = next_page = None
if reviews_page.has_next():
next_page = '/book/%d/?page=%d' % \
(book_id, reviews_page.next_page_number())
if reviews_page.has_previous():
prev_page = '/book/%s/?page=%d' % \
(book_id, reviews_page.previous_page_number())
user_tags = readthroughs = user_shelves = other_edition_shelves = []
if request.user.is_authenticated:
user_tags = models.UserTag.objects.filter(
book=book, user=request.user
).values_list('tag__identifier', flat=True)
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readthroughs = models.ReadThrough.objects.filter(
user=request.user,
book=book,
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).order_by('start_date')
user_shelves = models.ShelfBook.objects.filter(
added_by=request.user, book=book
)
other_edition_shelves = models.ShelfBook.objects.filter(
~Q(book=book),
added_by=request.user,
book__parent_work=book.parent_work,
)
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rating = reviews.aggregate(Avg('rating'))
tags = models.UserTag.objects.filter(
book=book,
)
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data = {
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'title': book.title,
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'book': book,
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'reviews': reviews_page,
'ratings': reviews.filter(content__isnull=True),
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'rating': rating['rating__avg'],
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'tags': tags,
'user_tags': user_tags,
'user_shelves': user_shelves,
'other_edition_shelves': other_edition_shelves,
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'readthroughs': readthroughs,
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'path': '/book/%s' % book_id,
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'info_fields': [
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{'name': 'ISBN', 'value': book.isbn_13},
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{'name': 'OCLC number', 'value': book.oclc_number},
{'name': 'OpenLibrary ID', 'value': book.openlibrary_key},
{'name': 'Goodreads ID', 'value': book.goodreads_key},
{'name': 'Format', 'value': book.physical_format},
{'name': 'Pages', 'value': book.pages},
],
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'next': next_page,
'prev': prev_page,
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}
return TemplateResponse(request, 'book.html', data)
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@login_required
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@permission_required('bookwyrm.edit_book', raise_exception=True)
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@require_GET
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def edit_book_page(request, book_id):
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''' info about a book '''
book = books_manager.get_edition(book_id)
if not book.description:
book.description = book.parent_work.description
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data = {
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'title': 'Edit Book',
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'book': book,
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'form': forms.EditionForm(instance=book)
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}
return TemplateResponse(request, 'edit_book.html', data)
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@require_GET
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def editions_page(request, book_id):
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''' list of editions of a book '''
work = get_object_or_404(models.Work, id=book_id)
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if is_api_request(request):
return JsonResponse(
work.to_edition_list(**request.GET),
encoder=ActivityEncoder
)
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data = {
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'title': 'Editions of %s' % work.title,
'editions': work.editions.all(),
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'work': work,
}
return TemplateResponse(request, 'editions.html', data)
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@require_GET
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def author_page(request, author_id):
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''' landing page for an author '''
author = get_object_or_404(models.Author, id=author_id)
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if is_api_request(request):
return JsonResponse(author.to_activity(), encoder=ActivityEncoder)
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books = models.Work.objects.filter(authors=author)
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data = {
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'title': author.name,
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'author': author,
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'books': [b.get_default_edition() for b in books],
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}
return TemplateResponse(request, 'author.html', data)
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@require_GET
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def tag_page(request, tag_id):
''' books related to a tag '''
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tag_obj = models.Tag.objects.filter(identifier=tag_id).first()
if not tag_obj:
return HttpResponseNotFound()
if is_api_request(request):
return JsonResponse(
tag_obj.to_activity(**request.GET), encoder=ActivityEncoder)
books = models.Edition.objects.filter(
usertag__tag__identifier=tag_id
).distinct()
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data = {
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'title': tag_obj.name,
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'books': books,
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'tag': tag_obj,
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}
return TemplateResponse(request, 'tag.html', data)
@csrf_exempt
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@require_GET
def user_shelves_page(request, username):
''' list of followers '''
return shelf_page(request, username, None)
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@require_GET
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def shelf_page(request, username, shelf_identifier):
''' display a shelf '''
try:
user = get_user_from_username(username)
except models.User.DoesNotExist:
return HttpResponseNotFound()
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if shelf_identifier:
shelf = user.shelf_set.get(identifier=shelf_identifier)
else:
shelf = user.shelf_set.first()
is_self = request.user == user
shelves = user.shelf_set
if not is_self:
follower = user.followers.filter(id=request.user.id).exists()
# make sure the user has permission to view the shelf
if shelf.privacy == 'direct' or \
(shelf.privacy == 'followers' and not follower):
return HttpResponseNotFound()
# only show other shelves that should be visible
if follower:
shelves = shelves.filter(privacy__in=['public', 'followers'])
else:
shelves = shelves.filter(privacy='public')
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if is_api_request(request):
return JsonResponse(shelf.to_activity(**request.GET))
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data = {
'title': user.name,
'user': user,
'is_self': is_self,
'shelves': shelves.all(),
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'shelf': shelf,
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}
return TemplateResponse(request, 'shelf.html', data)