def add_book():
form = BookForm(request.form)
form.authors.choices = sorted([(a.id, a.name) for a in Author.query.all()],
key=lambda author: author[1].split()[-1])
if request.method == 'POST' and form.validate():
book = Book(form.name.data)
for id in form.authors.data:
book.authors.append(Author.query.get(id))
db_session.add(book)
db_session.commit()
flash('The book was added to the Library.')
return redirect(url_for('view_book', id=book.id))
return render_template('library/add_book.html', form=form)
def edit_book(id):
error = None
book = Book.query.get(id)
if not book:
error = 'Sorry, we don\'t have the book with id {0}.'.format(id)
form = BookForm(request.form, obj=book)
form.authors.choices = sorted([(a.id, a.name) for a in Author.query.all()],
key=lambda author: author[1].split()[-1])
if request.method == 'POST' and form.validate():
book.name = form.name.data
book.authors = []
for id in form.authors.data:
book.authors.append(Author.query.get(id))
db_session.add(book)
db_session.commit()
return redirect(url_for('view_book', id=book.id))
form.authors.data = [a.id for a in book.authors]
return render_template('library/edit_book.html', form=form, book=book,
error=error)