def add_book(self,inBook): """add a personal copy of a book to a user's account Arguments: book - Book object being attached to the User Return Value: a BookCopy instance that links the User to the Book; None if the Book could not be linked """ from bookout.books.models import BookCopy bookcopy = BookCopy(book=inBook.key,owner=self.key,OLKey=inBook.OLKey) if bookcopy.put(): self.book_count = self.book_count + 1 self.put() return bookcopy
def borrow_book(self, bookID, lenderID, due_date = None): """Borrow a book from another user Arguments: bookID: an ID representing the bookCopy object that will be borrowed lenderID: an ID representing the user that will lend the book due_date: the date the book should be returned, if none is given the default for the lender is used Return value: A string describing the success or failure of the operation """ from bookout.books.models import BookCopy bookCopy = BookCopy.get_by_id(bookID) # check to see if the book copy is valid if(bookCopy == None): return "Invalid book ID" if(bookCopy.owner.id() != lenderID): return "That user does not own this book" if(bookCopy.borrower != None): return "That book is not avaiable to be lent out" bookCopy.lend(self.key.id(), due_date) bookCopy.put() return "Book successfully borrowed"
def return_book(self, bookCopyID): """Return the given book to it's owner Arguments: bookCopyID: an ID representing a BookCopy object, the book to be returned Return Value: A message describing the success or failure or the operation """ from bookout.books.models import BookCopy from bookout.activity.models import ConfirmReturn bookcopy = BookCopy.get_by_id(int(bookCopyID)) # verify the bookCopyID was valid if(bookcopy == None): return "Invalid book ID" if(bookcopy.owner == self.key): bookcopy.return_book() bookcopy.put() return "Book successfully returned to your library" elif (bookcopy.borrower == self.key): notification = ConfirmReturn(useraccount=bookcopy.owner,book=bookcopy.key) notification.put() return "Notice sent to owner, awaiting their confirmantion" else: return "You are not the owner of this book, nor are you borrowing it"
def confirm(self): bookcopy = BookCopy.query(BookCopy.key==self.book).get() book = Book.query(Book.key==bookcopy.book).get() bookcopy.update_due_date(self.due_date) bookcopy.put() self.cleanup() return "%s has been extended to %s" %(book.title,str(self.due_date))
def change_due_date(self, bookCopyID, newDueDate): """Update the date that a book is due Arguments: bookCopyID: an ID representing a BookCopy object, the book to be returned newDueDate: a string representing the new due date of the book Return Value: A message describing the success or failure or the operation """ from bookout.books.models import BookCopy from bookout.activity.models import DueDateExtension bookcopy = BookCopy.get_by_id(int(bookCopyID)) new_date = datetime.datetime.strptime(newDueDate, '%Y-%m-%d') if(bookcopy == None): return "Invalid book ID" if(bookcopy.owner == self.key): bookcopy.update_due_date(new_date) bookcopy.put() return "Due date successfully updated" elif (bookcopy.borrower == self.key): import datetime notification = DueDateExtension(useraccount=bookcopy.owner,book=bookcopy.key,due_date=new_date) notification.put() return "Request sent to owner" else: return "You are not the owner of this book, nor are you borrowing it"
def get_lent_books(self): """Get all the books that the user is currently lending to anther user Return Value: A list of BookCopy objects of all the the books the user is currently lending """ from bookout.books.models import BookCopy return BookCopy.query(BookCopy.owner==self.key,BookCopy.borrower!=None).fetch()
def get_borrowed_books(self): """Get all the books that the user is currently borrowing from anther user Return Value: A list of BookCopy objects of all the the books the user is currently borrowing """ from bookout.books.models import BookCopy return BookCopy.query(BookCopy.borrower==self.key).fetch()
def confirm(self): bookcopy = BookCopy.query(BookCopy.key==self.book).get() other = UserAccount.query(UserAccount.key==bookcopy.borrower).get() book = Book.query(Book.key==bookcopy.book).get() bookcopy.return_book() bookcopy.put() self.cleanup() return "%s has been returned to your library" %(book.title)
def get_library(self): """retrieve the user's library Return value: list of BookCopy objects owned by the user """ from bookout.books.models import BookCopy return BookCopy.query(BookCopy.owner==self.key).fetch()
def get_network_books(self): """Get all the books owned by users connected to this owned Return value: an array will all the BookCopy objects belonging to connected users """ from bookout.books.models import BookCopy return BookCopy.query(BookCopy.owner.IN(self.get_connections())).fetch()
def reject(self): other = UserAccount.query(UserAccount.key==self.connection).get() bookcopy = BookCopy.query(BookCopy.key==self.book).get() book = Book.query(Book.key==bookcopy.book).get() self.cleanup() otherAction = RequestToBorrow.query(RequestToBorrow.book == bookcopy.key and RequestToBorrow.useraccount == other.key).get() otherAction.cleanup() return "Request cancelled"
def reject(self): other = UserAccount.query(UserAccount.key==self.connection).get() bookcopy = BookCopy.query(BookCopy.key==self.book).get() book = Book.query(Book.key==bookcopy.book).get() self.cleanup() otherAction = WaitingToBorrow.query(WaitingToBorrow.book == bookcopy.key and WaitingToBorrow.useraccount == other.key).get() otherAction.cleanup() return "You have denied %s permission to borrow %s" %(other.name,book.title)
def get_book(self,book): """retrieve the user's copy of a particular book Arguments: book - the Book being retrieved Return value: the user's BookCOpy object associated with the provided Book; None if the user does not own book """ from bookout.books.models import BookCopy mybook = BookCopy.query(BookCopy.book==book.key,BookCopy.owner==self.key).get() return mybook
def confirm(self): other = UserAccount.query(UserAccount.key==self.connection).get() bookcopy = BookCopy.query(BookCopy.key==self.book).get() book = Book.query(Book.key==bookcopy.book).get() due_date = None cur_user = UserAccount.query(UserAccount.key==self.useraccount).get() cur_user.lend_book(int(bookcopy.key.id()), int(other.key.id()), due_date) self.cleanup() otherAction = WaitingToBorrow.query(WaitingToBorrow.book == bookcopy.key and WaitingToBorrow.useraccount == other.key).get() otherAction.cleanup() return "You have agreed to lend %s to %s" %(book.title,other.name)
def remove_book(self,book): """delete a user's copy of a book Arguments: book - Book object that is to be removed Return value: the BookCopy instance that was just deleted; None if the BookCopy was not found """ from bookout.books.models import BookCopy bookcopy = BookCopy.query(BookCopy.book==book.key,BookCopy.owner==self.key).get() if bookcopy: bookcopy.key.delete() self.book_count = self.book_count - 1 self.put() return bookcopy
def confirm(self): other = UserAccount.query(UserAccount.key==self.connection).get() bookcopy = BookCopy.query(BookCopy.key==self.book).get() book = Book.query(Book.key==bookcopy.book).get() print "You have accepted a connection request from %s" %(other.name)
def text(self): bookcopy = BookCopy.query(BookCopy.key==self.book).get() other = UserAccount.query(UserAccount.key==bookcopy.borrower).get() book = Book.query(Book.key==bookcopy.book).get() return "%s reported checking in '%s'" %(other.name,book.title)
def reject(self): bookcopy = BookCopy.query(BookCopy.key==self.book).get() other = UserAccount.query(UserAccount.key==bookcopy.borrower).get() book = Book.query(Book.key==bookcopy.book).get() self.cleanup() return "Recorded that %s didn't return %s" %(other.name,book.title)
def text(self): bookcopy = BookCopy.query(BookCopy.key==self.book).get() other = UserAccount.query(UserAccount.key==bookcopy.borrower).get() book = Book.query(Book.key==bookcopy.book).get() return "%s wants to extend the due date of '%s' to %s?" %(other.name,book.title,str(self.due_date))
def text(self): other = UserAccount.query(UserAccount.key==self.connection).get() bookcopy = BookCopy.query(BookCopy.key==self.book).get() book = Book.query(Book.key==bookcopy.book).get() return "%s has requested to borrow '%s'" %(other.name,book.title)
def text(self): other = UserAccount.query(UserAccount.key==self.connection).get() bookcopy = BookCopy.query(BookCopy.key==self.book).get() book = Book.query(Book.key==bookcopy.book).get() return "You have requested to borrow '%s' from %s" %(book.title,other.name)
