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backend.py
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from BaseHTTPServer import BaseHTTPRequestHandler, HTTPServer
import cgi
from sqlalchemy import func
from sqlalchemy.orm import sessionmaker
from sqlalchemy import create_engine
from database_setup import Base, Restaurant, MenuItem
#from flask.ext.sqlalchemy import SQLAlchemy
import datetime
import json
engine = create_engine('sqlite:///restaurantmenu.db')
Base.metadata.bind = engine
DBSession = sessionmaker(bind=engine)
session = DBSession()
class webServerHandler(BaseHTTPRequestHandler):
def do_GET(self):
try:
if self.path.endswith("/"):
self.send_response(301)
self.send_header('Content-type', 'text/html')
self.send_header('location', '/restaurants')
self.end_headers()
print("\nredirect to /restaurants\n")
return
if self.path.endswith("/restaurants"):
self.send_response(200)
self.send_header('Content-type', 'text/html')
self.end_headers()
result = session.query(Restaurant.name,Restaurant.id).order_by(Restaurant.name.asc()).all()
output = ""
output += "<html><body>"
output += "<h1>here is all restaurants :</h1>"
output += '''<a href="restaurants/new" > add new </a>'''
for item in result:
output+="<h3>"
output += item[0]
output+="</h3>"
output+='''<a href="/restaurants/%s/edit">edit</a></br>''' % item[1]
output+='''<a href="/restaurants/%s/delete">delete</a></br>''' % item[1]
output+='''<a href="/restaurants/%s/menu/JSON">json</a></br></br>''' % item[1]
output += "</body></html>"
self.wfile.write(output)
print ("\nrender the /restaurants page\n")
return
if self.path.endswith("/JSON"): #/restaurants/<int:restaurant_id>/menu/JSON
self.send_response(200)
self.send_header('Content-type', 'text/html')
self.end_headers()
restaurantID = self.path.split("/")[2]
restaurant = session.query(Restaurant).filter_by(id=restaurantID).one() # you may use it in the future
items = session.query(MenuItem).filter_by(
restaurant_id=restaurantID).all()
output= json.dumps([i.serialize for i in items])
self.wfile.write(output)
print ("\n output the json items\n")
return
if self.path.endswith("/restaurants/new"):
self.send_response(200)
self.send_header('Content-type', 'text/html')
self.end_headers()
output = ""
output += "<html><body>"
output += '''<form method='POST' enctype='multipart/form-data' action='/restaurants/new'>'''
output += '''<h2>add new restaurant ?</h2>'''
output += '''<input name="newRestaurantName" type="text" >'''
output += '''<input type="submit" value="Add resturant"></br></br> '''
output += '''<button href="/restaurants"> back </button> </form> '''
output += "</body></html>"
self.wfile.write(output)
print ("\nrender the /restaurants/new page\n")
return
if self.path.endswith("/edit"):
restaurantID = self.path.split("/")[2]
myrestaurant = session.query(Restaurant).filter_by(id=restaurantID).one()
if myrestaurant :
self.send_response(200)
self.send_header('Content-type', 'text/html')
self.end_headers()
output = "<html><body>"
output += "<h1>%s</h1>" % myrestaurant.name
output += '''<form method='POST' enctype='multipart/form-data' action="/restaurants/%s/edit">''' % restaurantID
output += '''<h2>Edit restaurant name ?</h2>'''
output += '''<input name="newRestaurantName" type="text" value="%s" >''' % myrestaurant.name
output += '''<input type="submit" value="Change name"></br></br>'''
output += '''<button href="/restaurants" > back </button> </form>'''
output += "</body></html>"
self.wfile.write(output)
print ("\nrender the /restaurants/<id>/edit page\n")
return
if self.path.endswith("/delete"):
restaurantID = self.path.split("/")[2]
myrestaurant = session.query(Restaurant).filter_by(id=restaurantID).one()
if myrestaurant :
self.send_response(200)
self.send_header('Content-type', 'text/html')
self.end_headers()
output = "<html><body>"
output += "<h1>do you want to remove %s ?</h1>" % myrestaurant.name
output += '''<form method='POST' enctype='multipart/form-data' action="/restaurants/%s/delete">''' % restaurantID
output += '''<input type="submit" value="Delete"></br></br>'''
output += '''<button href="/restaurants"> back </button> </form> '''
output += "</body></html>"
self.wfile.write(output)
print ("\nrender the /restaurants/<id>/edit page\n")
return
except IOError:
self.send_error(404, 'File Not Found: %s' % self.path)
def do_POST(self):
try:
if self.path.endswith("/restaurants/new"):
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')
#insert into the database
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()
print("\nredirect to /restaurants after adding new restaurant\n")
if self.path.endswith("/edit"):
print("\nrecieve post request\n")
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')
restaurantID = self.path.split("/")[2]
print("\nrecieve multipart/form-data\n")
print("resturant ID is %s" % restaurantID)
#Edit the row in the database
myrestaurant = session.query(Restaurant).filter_by(id=restaurantID).one()
if myrestaurant:
myrestaurant.name = messagecontent[0]
session.add(myrestaurant)
session.commit()
self.send_response(301)
self.send_header('Content-type', 'text/html')
self.send_header('location', '/restaurants')
self.end_headers()
print("\nredirect to /restaurants after editting restaurant name\n")
if self.path.endswith("/delete"):
print("\nrecieve post request\n")
ctype, pdict = cgi.parse_header(self.headers.getheader('content-type'))
if ctype == 'multipart/form-data':
restaurantID = self.path.split("/")[2]
#remove the row from the database
myrestaurant = session.query(Restaurant).filter_by(id=restaurantID).one()
if myrestaurant:
session.delete(myrestaurant)
session.commit()
self.send_response(301)
self.send_header('Content-type', 'text/html')
self.send_header('location', '/restaurants')
self.end_headers()
print("\nredirect to /restaurants after deleteing restaurant name\n")
except:
pass
def main():
try:
port = 8080
server = HTTPServer(('', port), webServerHandler)
print "Web Server running on http://127.0.0.1:%s/restaurants" % port
server.serve_forever()
except KeyboardInterrupt:
print " ^C entered, stopping web server...."
server.socket.close()
if __name__ == '__main__':
main()