/
webserver.py
188 lines (161 loc) · 7.67 KB
/
webserver.py
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from BaseHTTPServer import BaseHTTPRequestHandler, HTTPServer
import cgi
from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker
from Database_setup import Restaurant, Base, MenuItem
#Handler
engine = create_engine('sqlite:///restaurantmenu.db')
# Bind the engine to the metadata of the Base class so that the
# declaratives can be accessed through a DBSession instance
Base.metadata.bind = engine
DBSession = sessionmaker(bind=engine)
# A DBSession() instance establishes all conversations with the database
# and represents a "staging zone" for all the objects loaded into the
# database session object. Any change made against the objects in the
# session won't be persisted into the database until you call
# session.commit(). If you're not happy about the changes, you can
# revert all of them back to the last commit by calling
# session.rollback()
session = DBSession()
class webserverHandler(BaseHTTPRequestHandler):
def do_GET(self):
try:
# Objective 1 visiting /restaurants lists all the
# restaurant names in the database
if self.path.endswith("/restaurant/new"):
self.send_response(200)
self.send_header('Content-type', 'text/html')
self.end_headers()
#objective 3 step 2 create restaurants/new
output = ""
output += "<html><body>"
output += "<h1>Make a New Restaurant</h1>"
output += "<form method = 'POST' enctype='multipart/form-data' action = '/restaurants/new'>"
output += "<input name = 'newRestaurantName' type = 'text' placeholder = 'New Restaurant Name' > "
output += "<input type='submit' value='Create'>"
output += "</form></body></html>"
self.wfile.write(output)
return
# Objective 2
if self.path.endswith("/restaurant"):
self.send_response(200)
self.send_header('Content-type', 'text/html')
self.end_headers()
#Objective 1: read from database
result = session.query(Restaurant).all()
output = "<html><body>"
for restaurant in result:
print
output += "<p>%s</p>" % restaurant.name
# Objective 2 -- Add Edit and Delete Links
output += "<a href ='#' >Edit </a> "
output += "</br>"
output += "<a href =' #'> Delete </a>"
output += "</html></body>"
self.wfile.write(output)
return
# Objective 4 rename restaurant by going to /restaurant/id/edit
if self.path.endswith("/edit"):
# third value of this array contains res. ID number
restaurantIDPath = self.path.split("/")[2]
#filter by ID to get number
myRestaurantQuery = session.query(Restaurant).filter_by(
id=restaurantIDPath).one()
if myRestaurantQuery:
self.send_response(200)
self.send_header('Content-type', 'text/html')
self.end_headers()
output = "<html><body>"
output += "<h1>"
output += myRestaurantQuery.name
output += "</h1>"
output += "<form method='POST' enctype='multipart/form-data' action = '/restaurants/%s/edit' >" % restaurantIDPath
output += "<input name = 'newRestaurantName' type='text' placeholder = '%s' >" % myRestaurantQuery.name
output += "<input type = 'submit' value = 'Rename'>"
output += "</form>"
output += "</body></html>"
self.wfile.write(output)
#Objective 5: delete restaurant
if self.path.endswith("/delete"):
restaurantIDPath = self.path.split("/")[2]
myRestaurantQuery = session.query(Restaurant).filter_by(
id=restaurantIDPath).one()
if myRestaurantQuery:
self.send_response(200)
self.send_header('Content-type', 'text/html')
self.end_headers()
output = ""
output += "<html><body>"
output += "<h1>Are you sure you want to delete %s?" % myRestaurantQuery.name
output += "<form method='POST' enctype = 'multipart/form-data' action = '/restaurants/%s/delete'>" % restaurantIDPath
output += "<input type = 'submit' value = 'Delete'>"
output += "</form>"
output += "</body></html>"
self.wfile.write(output)
except IOError:
self.send_error(404, "File Not Found %s" % self.path)
#Get is to get info using Urls
#Post method is to post to server
def do_POST(self):
try:
self.send_response(301)
self.end_headers()
if self.path.endswith("/restaurant/name"):
ctype, pdict = cgi.parse_header(self.headers.getheader('content-type'))
if ctype == 'multipart/form-data':
fields = cgi.parse_multipart(self.rfile, pdict)
messagecontent = fields.get('newRestaurantName')
# Create new Restaurant Object
newRestaurant = Restaurant(name=messagecontent[0])
session.add(newRestaurant)
session.commit()
self.send_response(301)
self.send_header('Content-type', 'text/html')
self.send_header('Location', '/restaurants')
self.end_headers()
#Objective 4 to edit restaurant name:
if self.path.endswith("/edit"):
ctype, pdict = cgi.parse_header(
self.headers.getheader('content-type'))
if ctype == 'multipart/form-data':
#grab input
fields = cgi.parse_multipart(self.rfile, pdict)
messagecontent = fields.get('newRestaurantName')
restaurantIDPath = self.path.split("/")[2]
myRestaurantQuery = session.query(Restaurant).filter_by(
id=restaurantIDPath).one()
#reset name field to entry created in form-add to session-commit
if myRestaurantQuery != []:
myRestaurantQuery.name = messagecontent[0]
session.add(myRestaurantQuery)
session.commit()
self.send_response(301)
self.send_header('Content-type', 'text/html')
self.send_header('Location', '/restaurants')
self.end_headers()
#Objective 5: delete restaurant
if self.path.endswith("/delete"):
restaurantIDPath = self.path.split("/")[2]
myRestaurantQuery = session.query(Restaurant).filter_by(
id=restaurantIDPath).one()
if myRestaurantQuery:
session.delete(myRestaurantQuery)
session.commit()
self.send_response(301)
self.send_header('Content-type', 'text/html')
self.send_header('Location', '/restaurants')
self.end_headers()
except:
pass
#main
def main():
try:
port = 8080
server = HTTPServer(('', port), webserverHandler)
print "Web server running on port %s" % port
server.serve_forever()
except KeyboardInterrupt:
print " ^C entered, stopping web server...."
server.socket.close()
if __name__ == '__main__':
main()