def add_book():
form = BookForm()
if form.validate_on_submit():
if request.method == 'POST':
existing_book = Book.query.filter(
Book.name == form.name.data).filter(
Book.author == form.author.data).first()
book = Book(name=form.name.data, author=form.author.data)
if (existing_book == None):
book.create_time = datetime.utcnow()
db.session.add(book)
elif (current_user not in book.user):
book.user.append(current_user)
book.create_time = datetime.utcnow()
else:
flash('Book already exists!')
return redirect(url_for('add_book'))
# return redirect(url_for('add_book'))
#and(existing_book.name == form.name.data and existing_book.author == form.author.data and existing_book.user_id == current_user.id)):
# flash('Book already exists!')
# return redirect(url_for('add_book'))
db.session.commit()
flash('Your book succesfully added!')
return redirect(url_for('index'))
return render_template("add_book.html", title='Add_book', form=form)
