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deletebook.py
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deletebook.py
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from twisted.web import resource, server
from mako.template import Template
import cgi
from database import Database
class DeleteBook(resource.Resource):
isLeaf = False
def __init__(self):
resource.Resource.__init__(self)
self.putChild('confirm', ConfirmDelete())
def getChild(self, name, request):
if name == '':
return self
return DeleteRequest(name)
def render_GET(self, request):
request.redirect('/')
request.finish()
return server.NOT_DONE_YET
class DeleteRequest(resource.Resource):
def __init__(self, idnum):
resource.Resource.__init__(self)
self.idnum = idnum
def render_GET(self, request):
username = request.getCookie('user')
bookPage = self.getBookInfo(username)
if bookPage:
return bookPage
request.redirect('/')
request.finish()
return server.NOT_DONE_YET
def getBookInfo(self, username):
if self.idnum.isdigit():
db = Database()
bookinfo = db.getBookInfo(self.idnum, username)
if bookinfo:
title = bookinfo[2]
booktype = bookinfo[3]
rating = bookinfo[4]
author = bookinfo[5]
numpages = bookinfo[6]
yearpub = bookinfo[7]
yearread = bookinfo[8]
return self.write_form(title, booktype, rating, author, numpages, yearpub, yearread)
return None
def write_form(self, title='', booktype='', rating='', author='', numpages='', yearpub='', yearread='', error=''):
mytemplate = Template(filename='templates/deletebook.html')
return str(mytemplate.render(idnum=self.idnum, title=title, booktype=booktype, rating=rating, author=author, numpages=numpages, yearpub=yearpub, yearread=yearread, error=error))
class ConfirmDelete(resource.Resource):
def getChild(self, name, request):
if name == '':
return self
return DeletePage(name)
def render_GET(self, request):
request.redirect('/')
request.finish()
return server.NOT_DONE_YET
class DeletePage(resource.Resource):
def __init__(self, idnum):
resource.Resource.__init__(self)
self.idnum = idnum
def render_GET(self, request):
if not self.idnum.isdigit():
request.redirect('/')
request.finish()
return server.NOT_DONE_YET
username = request.getCookie('user')
db = Database()
db.deleteBook(self.idnum, username)
request.redirect('/books')
request.finish()
return server.NOT_DONE_YET