moviewyrm/bookwyrm/views/shelf/shelf_actions.py

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""" shelf views """
from django.db import IntegrityError, transaction
from django.contrib.auth.decorators import login_required
from django.http.response import HttpResponse
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from django.shortcuts import get_object_or_404, redirect
from django.views.decorators.http import require_POST
from bookwyrm import forms, models
@login_required
@require_POST
def create_shelf(request):
"""user generated shelves"""
form = forms.ShelfForm(request.POST)
if not form.is_valid():
return redirect(request.headers.get("Referer", "/"))
shelf = form.save()
return redirect(shelf.local_path)
@login_required
@require_POST
def delete_shelf(request, shelf_id):
"""user generated shelves"""
shelf = get_object_or_404(models.Shelf, id=shelf_id)
shelf.raise_not_deletable(request.user)
shelf.delete()
return redirect("user-shelves", request.user.localname)
@login_required
@require_POST
@transaction.atomic
def shelve(request):
"""put a book on a user's shelf"""
book = get_object_or_404(models.Edition, id=request.POST.get("book"))
desired_shelf = get_object_or_404(
request.user.shelf_set, identifier=request.POST.get("shelf")
)
# first we need to remove from the specified shelf
change_from_current_identifier = request.POST.get("change-shelf-from")
if change_from_current_identifier:
# find the shelfbook obj and delete it
get_object_or_404(
models.ShelfBook,
book=book,
user=request.user,
shelf__identifier=change_from_current_identifier,
).delete()
# A book can be on multiple shelves, but only on one read status shelf at a time
if desired_shelf.identifier in models.Shelf.READ_STATUS_IDENTIFIERS:
# figure out where state shelf it's currently on (if any)
current_read_status_shelfbook = (
models.ShelfBook.objects.select_related("shelf")
.filter(
shelf__identifier__in=models.Shelf.READ_STATUS_IDENTIFIERS,
user=request.user,
book=book,
)
.first()
)
if current_read_status_shelfbook is not None:
if (
current_read_status_shelfbook.shelf.identifier
!= desired_shelf.identifier
):
current_read_status_shelfbook.delete()
else: # It is already on the shelf
return redirect(request.headers.get("Referer", "/"))
# create the new shelf-book entry
models.ShelfBook.objects.create(
book=book, shelf=desired_shelf, user=request.user
)
else:
# we're putting it on a custom shelf
try:
models.ShelfBook.objects.create(
book=book, shelf=desired_shelf, user=request.user
)
# The book is already on this shelf.
# Might be good to alert, or reject the action?
except IntegrityError:
pass
return redirect(request.headers.get("Referer", "/"))
@login_required
@require_POST
def unshelve(request, referer=None, book_id=False):
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"""remove a book from a user's shelf"""
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identity = book_id if book_id else request.POST.get("book")
book = get_object_or_404(models.Edition, id=identity)
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shelf_book = get_object_or_404(
models.ShelfBook, book=book, shelf__id=request.POST["shelf"]
)
shelf_book.raise_not_deletable(request.user)
shelf_book.delete()
return redirect(request.headers.get("Referer", "/"))