def clean_isbn(self):
'''Converts the user inputted isbn into a valid ISBN-13, or
raises a validation error if the isbn does not exist or is
incorrectly formatted'''
# check formatting
isbn = cleanisbn(self.cleaned_data['isbn'])
if isbn == '':
raise forms.ValidationError('The ISBN you entered is not valid')
# check if book exists either here at PTX or at amazon
try:
if len(isbn) == 13:
book = Book.objects.get(isbn13=isbn)
elif len(isbn) == 10:
book = Book.objects.get(isbn10=isbn)
except Book.DoesNotExist:
# book does not exist in PTX, so try fetching it from amazon
book = book_details(isbn)
if book == None:
raise forms.ValidationError(
'A book with this ISBN could not be found')
book.save()
return book.isbn13
def clean_isbn(self):
'''Converts the user inputted isbn into a valid ISBN-13, or
raises a validation error if the isbn does not exist or is
incorrectly formatted'''
# check formatting
isbn = cleanisbn(self.cleaned_data['isbn'])
if isbn == '':
raise forms.ValidationError('The ISBN you entered is not valid')
# check if book exists either here at PTX or at amazon
try:
if len(isbn) == 13:
book = Book.objects.get(isbn13=isbn)
elif len(isbn) == 10:
book = Book.objects.get(isbn10=isbn)
except Book.DoesNotExist:
# book does not exist in PTX, so try fetching it from amazon
book = book_details(isbn)
if book == None:
raise forms.ValidationError('A book with this ISBN could not be found')
book.save()
return book.isbn13
def process_add(request, form_data):
'''Returns the added book if add is successful, None if the field is blank,
or raises Book.DoesNotExist if no such book is found'''
form = AddForm(form_data)
if not form.is_valid():
raise Book.DoesNotExist
# Clean up the ISBN, or stop if there has been no ISBN entered
isbn = form.cleaned_data['add']
if len(isbn) == 0: return None
isbn = cleanisbn(isbn)
# Get the book, or raise the exception that it does not exist
if len(isbn) == 13:
try:
book = Book.objects.get(isbn13=isbn)
except Book.DoesNotExist:
book = book_details(isbn)
if book != None: book.save()
else: raise Book.DoesNotExist
elif len(isbn) == 10:
try:
book = Book.objects.get(isbn10=isbn)
except Book.DoesNotExist:
book = book_details(isbn)
if book != None: book.save()
else: raise Book.DoesNotExist
else:
raise Book.DoesNotExist
# Check that the item is not already in the wishlist
user, created = User.objects.get_or_create(net_id=request.user.username)
req_list = Request.objects.filter(user=user,
status='o', book=book)
if len(req_list) > 0:
raise AlreadyInWishlist
req = Request(user=user, book = book, status = 'o', maxprice = 0)
req.save()
return book
def process_add(request, form_data):
'''Returns the added book if add is successful, None if the field is blank,
or raises Book.DoesNotExist if no such book is found'''
form = AddForm(form_data)
if not form.is_valid():
raise Book.DoesNotExist
# Clean up the ISBN, or stop if there has been no ISBN entered
isbn = form.cleaned_data['add']
if len(isbn) == 0: return None
isbn = cleanisbn(isbn)
# Get the book, or raise the exception that it does not exist
if len(isbn) == 13:
try:
book = Book.objects.get(isbn13=isbn)
except Book.DoesNotExist:
book = book_details(isbn)
if book != None: book.save()
else: raise Book.DoesNotExist
elif len(isbn) == 10:
try:
book = Book.objects.get(isbn10=isbn)
except Book.DoesNotExist:
book = book_details(isbn)
if book != None: book.save()
else: raise Book.DoesNotExist
else:
raise Book.DoesNotExist
# Check that the item is not already in the wishlist
user, created = User.objects.get_or_create(net_id=request.user.username)
req_list = Request.objects.filter(user=user, status='o', book=book)
if len(req_list) > 0:
raise AlreadyInWishlist
req = Request(user=user, book=book, status='o', maxprice=0)
req.save()
return book
def process(request, step, ticket):
# this function only processes POST requests
if request.method != 'POST':
raise PermissionDenied()
step = int(step)
if step == ChooseCourseForm.PROC:
form = ChooseCourseForm(request.POST)
if form.is_valid():
# break down the course input
course = form.cleaned_data['course']
m = COURSE.match(course).groups()
course_dept = m[0].upper()
course_num = int(m[1])
# does it exist? if not, add it
# TODO: MORE CHECKING HERE FOR INVALID DEPARTMENTS, ETC
course_list = Course.objects.filter(dept__exact=course_dept,
num__exact=course_num)
if len(course_list) == 1:
c = course_list[0]
elif len(course_list) == 0:
c = Course(dept=course_dept, num=course_num)
c.save()
else:
# This can't really happen
raise PermissionDenied
# save the internal course id for later
request.session['request_course_' + ticket] = c
# show the list of books for the course
return render_form(ChooseBookForm(c), '', ticket, request)
else:
return render_form(ChooseCourseForm(request.POST), '', ticket,
request)
elif step == ChooseBookForm.PROC:
course = request.session['request_course_' + ticket]
form = ChooseBookForm(course, request.POST)
if form.is_valid():
isbn_from_db = form.cleaned_data['isbn_from_db']
isbn_from_user = form.cleaned_data['isbn_from_user']
if isbn_from_db != None:
# book exists already, let the user list this book
request.session['request_book_' + ticket] = isbn_from_db
return render_form(RequestForm(), '', ticket, request)
elif isbn_from_user != None:
# check if book exists in DB, just not associated with that class
if Book.objects.filter(isbn13=isbn_from_user).count() == 0:
# book does not exist, let the user create it
#form = AddBookForm()
#form.fields['isbn13'].initial = isbn_from_user
bookinfo = book_details(isbn_from_user)
if bookinfo == None:
return render_form(form, '', ticket, request)
else:
set_ticket_attr(request, ticket, 'bookinfo', bookinfo)
return render_bookinfo(bookinfo, ticket, request)
else:
# book needs new class reference added.
book = Book.objects.get(isbn13=isbn_from_user)
book.course.add(course)
book.save()
request.session['request_book_' + ticket] = book
return render_form(RequestForm(), '', ticket, request)
else:
# no book chosen, go back and make the user choose a book
return render_form(form, '', ticket, request)
else:
return render_form(form, '', ticket, request)
elif step == PROCESS_ADD_BOOK:
bookinfo = get_ticket_attr(request, ticket, 'bookinfo')
# TODO: MAKE SURE AGAIN THAT THE ISBN IS NOT ALREADY IN THE DATABASE
book = Book(isbn13=bookinfo['isbn13'],
isbn10=bookinfo['isbn10'],
title=bookinfo['title'],
desc='',
author=bookinfo['author'],
edition=bookinfo['edition'],
year=bookinfo['year'],
publisher=bookinfo['publisher'],
list_price=0,
imagename=bookinfo['img_name'])
course = request.session['request_course_' + ticket]
book.course.add(course)
book.save()
request.session['request_book_' + ticket] = book
return render_form(RequestForm(), '', ticket, request)
elif step == RequestForm.PROC:
form = RequestForm(request.POST)
if form.is_valid():
f = form.cleaned_data
book = request.session['request_book_' + ticket]
user, created = User.objects.get_or_create(
net_id=request.user.username)
maxprice = form.cleaned_data['maxprice']
the_request = Request(book=book, user=user, maxprice=maxprice)
the_request.save()
reset_request_session(request, ticket)
# redirect to thank you page
return HttpResponseRedirect('/request/thankyou?b=%s' % (book))
else:
return render_form(form, '', ticket, request)
return HttpResponse(step)
def process(request, step, ticket):
# this function only processes POST requests
if request.method != 'POST':
raise PermissionDenied()
step = int(step)
if step == ChooseCourseForm.PROC:
form = ChooseCourseForm(request.POST)
if form.is_valid():
# break down the course input
course = form.cleaned_data['course']
m = COURSE.match(course).groups()
course_dept = m[0].upper()
course_num = int(m[1])
# does it exist? if not, add it
# TODO: MORE CHECKING HERE FOR INVALID DEPARTMENTS, ETC
course_list = Course.objects.filter(dept__exact=course_dept, num__exact=course_num)
if len(course_list) == 1:
c = course_list[0]
elif len(course_list) == 0:
c = Course(dept=course_dept, num=course_num)
c.save()
else:
# This can't really happen
raise PermissionDenied
# save the internal course id for later
request.session['request_course_' + ticket] = c
# show the list of books for the course
return render_form(ChooseBookForm(c), '', ticket, request)
else:
return render_form(ChooseCourseForm(request.POST), '', ticket, request)
elif step == ChooseBookForm.PROC:
course = request.session['request_course_' + ticket]
form = ChooseBookForm(course, request.POST)
if form.is_valid():
isbn_from_db = form.cleaned_data['isbn_from_db']
isbn_from_user = form.cleaned_data['isbn_from_user']
if isbn_from_db != None:
# book exists already, let the user list this book
request.session['request_book_' + ticket] = isbn_from_db
return render_form(RequestForm(), '', ticket, request)
elif isbn_from_user != None:
# check if book exists in DB, just not associated with that class
if Book.objects.filter(isbn13=isbn_from_user).count() == 0:
# book does not exist, let the user create it
#form = AddBookForm()
#form.fields['isbn13'].initial = isbn_from_user
bookinfo = book_details(isbn_from_user)
if bookinfo == None:
return render_form(form, '', ticket, request)
else:
set_ticket_attr(request, ticket, 'bookinfo', bookinfo)
return render_bookinfo(bookinfo, ticket, request)
else:
# book needs new class reference added.
book = Book.objects.get(isbn13=isbn_from_user)
book.course.add(course)
book.save()
request.session['request_book_' + ticket] = book
return render_form(RequestForm(), '', ticket, request)
else:
# no book chosen, go back and make the user choose a book
return render_form(form, '', ticket, request)
else:
return render_form(form, '', ticket, request)
elif step == PROCESS_ADD_BOOK:
bookinfo = get_ticket_attr(request, ticket, 'bookinfo')
# TODO: MAKE SURE AGAIN THAT THE ISBN IS NOT ALREADY IN THE DATABASE
book = Book(
isbn13 = bookinfo['isbn13'],
isbn10 = bookinfo['isbn10'],
title = bookinfo['title'],
desc = '',
author = bookinfo['author'],
edition = bookinfo['edition'],
year = bookinfo['year'],
publisher = bookinfo['publisher'],
list_price = 0,
imagename = bookinfo['img_name'])
course = request.session['request_course_' + ticket]
book.course.add(course)
book.save()
request.session['request_book_' + ticket] = book
return render_form(RequestForm(), '', ticket, request)
elif step == RequestForm.PROC:
form = RequestForm(request.POST)
if form.is_valid():
f = form.cleaned_data
book = request.session['request_book_' + ticket]
user, created = User.objects.get_or_create(net_id=request.user.username)
maxprice = form.cleaned_data['maxprice']
the_request = Request(
book=book,
user=user,
maxprice=maxprice)
the_request.save()
reset_request_session(request, ticket)
# redirect to thank you page
return HttpResponseRedirect('/request/thankyou?b=%s' % (book))
else:
return render_form(form, '', ticket, request)
return HttpResponse(step)