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webserver.py
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from BaseHTTPServer import BaseHTTPRequestHandler, HTTPServer
import cgi
# Import CRUD Operations from Lesson 1
from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker
from database_setup import Base, Restaurant, MenuItem
# The functions generally include the main function and the handler
# The following is the handler
# Create session and connect to DB
engine = create_engine('sqlite:///restaurantMenu.db')
Base.metadata.bind=engine
DBSession = sessionmaker(bind = engine)
session = DBSession()
class webServerHandler(BaseHTTPRequestHandler):
def do_GET(self):
try:
# Objective 3 Step 2 - Create /restarants/new page
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 += "<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></html></body>"
self.wfile.write(output)
return
if self.path.endswith("/edit"):
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 = "<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 new "get page" to confirm delete
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 = "<html><body>"
output += "<h1>"
output += "Are you sure to delete %s" % myRestaurantQuery.name
output += "</h1>"
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)
if self.path.endswith("/restaurants"):
restaurants = session.query(Restaurant).all()
output = ""
# Objective 3 Step 1 - Create a Link to create a new menu item
output += "<a href = '/restaurants/new' > Make a New Restaurant Here </a></br></br>"
self.send_response(200)
self.send_header('Content-type', 'text/html')
self.end_headers()
output += "<html><body>"
for restaurant in restaurants:
output += restaurant.name
output += "</br>"
# Objective 2 -- Add Edit and Delete Links
# Objective 4 -- Replace Edit href
output += "<a href ='/restaurants/%s/edit' >Edit </a> " % restaurant.id
output += "</br>"
#objective 5 -- Replace the Delete Links
output += "<a href ='/restaurants/%s/delete'> Delete </a>" % restaurant.id
output += "</br></br></br>"
output += "</body></html>"
self.wfile.write(output)
return
except IOError:
self.send_error(404, 'File Not Found: %s' % self.path)
# Objective 3 Step 3- Make POST method
def do_POST(self):
try:
# Objective 5: make a new "if" to delect
if self.path.endswith("/delete"):
ctype, pdict = cgi.parse_header(
self.headers.getheader('content-type'))
if ctype == 'multipart/form-data':
fields = cgi.parse_multipart(self.rfile, pdict)
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()
if self.path.endswith("/edit"):
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')
restaurantIDPath = self.path.split("/")[2]
myRestaurantQuery = session.query(Restaurant).filter_by(
id=restaurantIDPath).one()
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()
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')
# 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()
except:
pass
def main():
try:
server = HTTPServer(('', 8010), webServerHandler)
print 'Web server running...open localhost:8010/restaurants in your browser'
server.serve_forever()
except KeyboardInterrupt:
print '^C received, shutting down server'
server.socket.close()
if __name__ == '__main__':
main()