msaisushma/newserver.py

## newserver.py
""".....code for the bus tracking system by the help of pyramid frame work....."""

from wsgiref.simple_server import make_server
from pyramid.config import Configurator
from pyramid.response import Response
from sqlalchemy import create_engine
from busroutes import BusRoute
from busroutes import Base
from sqlalchemy.orm import sessionmaker
from sqlalchemy.ext.declarative import declarative_base
from pyramid.renderers import render
from pyramid.response import Response
from pyramid.view import view_config

DOMAIN = '0.0.0.0'
PORT = 8000

DB_NAME = 'buses.db'

def create_engine():
	"""Creates engine every single time this method is called"""
	engine = create_engine('sqlite:///%s' % DB_NAME, echo=True)
	return engine

def get_session(engine):
	"""
	Creates session object every single time this method is called
	"""
	return sessionmaker(bind=engine)()


def create_configuration():
	"""
	Prepares configuration and adds routes to it
	"""
	config = Configurator()
	config.add_route('home', '/')
	# TODO: check @view_config decorator
	#config.add_view(bus_routes, route_name='home')
	config.add_route('bus', '/bus/')
	#config.add_view(bus_routes, route_name='bus')
	config.add_route('bus_info', '/response')
	#config.add_view(bus_info, route_name='bus_info')
	config.include('pyramid_chameleon')
	config.scan('views')
	return config


def start_server(config):
	"""
	Runs a pyramid server at the configured domain:port
	"""
	app = config.make_wsgi_app()
	server = make_server(DOMAIN, PORT, app)
	print 'Server Started listening on %s:%s' % (DOMAIN, PORT)
	server.serve_forever()

if __name__ == '__main__':
	config = create_configuration()
	start_server(config)

## templates.pt
<!DOCTYPE html>
<html lang="en">
<head>
    <title>Bus serach form</title>
</head>
<body>
	<form action="/response" method="POST">Enter the bus no<input type="text" name="bus_no"/><button type="submit">Search Bus</button></form>
</body>
</html>

## views.py

@view_config(route_name='home', renderer='templates.pt')
def home_view(request):
    return Response('<h1><p>Welcome</p></h1>')

@view_config(route_name='bus')
def form_view(request):
    result = render('templates.pt',
                    {'start_point':'m','end_point':'u','route':'l'},
                    request=request)
    response = Response(result)
    return response

@view_config(route_name='response', renderer='templates.pt')
def fetch_bus_info(request):
    bus_no = request.params.get('bus_no','')
    assert bus_no, 'Keyword expected as bus_no. Got nothing instead'
    Session = get_session(engine)
    results = Session.query(BusRoute).filter(BusRoute.bus_no==bus_no)
    results = Session.query(BusRoute).all()
    if results.count():
        bus_route = results.one()
        TEMPLATE_TEXT = {'bus_route.start_point':'m','bus_route.end_point':'u','bus_route.route':'l'}
        return Response(TEMPLATE_TEXT)
    return Response("Invalid Bus No:%s" % bus_no)
	""".....code for the bus tracking system by the help of pyramid frame work....."""

	from wsgiref.simple_server import make_server
	from pyramid.config import Configurator
	from pyramid.response import Response
	from sqlalchemy import create_engine
	from busroutes import BusRoute
	from busroutes import Base
	from sqlalchemy.orm import sessionmaker
	from sqlalchemy.ext.declarative import declarative_base
	from pyramid.renderers import render
	from pyramid.response import Response
	from pyramid.view import view_config

	DOMAIN = '0.0.0.0'
	PORT = 8000

	DB_NAME = 'buses.db'

	def create_engine():
	"""Creates engine every single time this method is called"""
	engine = create_engine('sqlite:///%s' % DB_NAME, echo=True)
	return engine

	def get_session(engine):
	"""
	Creates session object every single time this method is called
	"""
	return sessionmaker(bind=engine)()


	def create_configuration():
	"""
	Prepares configuration and adds routes to it
	"""
	config = Configurator()
	config.add_route('home', '/')
	# TODO: check @view_config decorator
	#config.add_view(bus_routes, route_name='home')
	config.add_route('bus', '/bus/')
	#config.add_view(bus_routes, route_name='bus')
	config.add_route('bus_info', '/response')
	#config.add_view(bus_info, route_name='bus_info')
	config.include('pyramid_chameleon')
	config.scan('views')
	return config


	def start_server(config):
	"""
	Runs a pyramid server at the configured domain:port
	"""
	app = config.make_wsgi_app()
	server = make_server(DOMAIN, PORT, app)
	print 'Server Started listening on %s:%s' % (DOMAIN, PORT)
	server.serve_forever()

	if __name__ == '__main__':
	config = create_configuration()
	start_server(config)
	<!DOCTYPE html>
	<html lang="en">
	<head>
	<title>Bus serach form</title>
	</head>
	<body>
	<form action="/response" method="POST">Enter the bus no<input type="text" name="bus_no"/><button type="submit">Search Bus</button></form>
	</body>
	</html>

	@view_config(route_name='home', renderer='templates.pt')
	def home_view(request):
	return Response('<h1><p>Welcome</p></h1>')

	@view_config(route_name='bus')
	def form_view(request):
	result = render('templates.pt',
	{'start_point':'m','end_point':'u','route':'l'},
	request=request)
	response = Response(result)
	return response

	@view_config(route_name='response', renderer='templates.pt')
	def fetch_bus_info(request):
	bus_no = request.params.get('bus_no','')
	assert bus_no, 'Keyword expected as bus_no. Got nothing instead'
	Session = get_session(engine)
	results = Session.query(BusRoute).filter(BusRoute.bus_no==bus_no)
	results = Session.query(BusRoute).all()
	if results.count():
	bus_route = results.one()
	TEMPLATE_TEXT = {'bus_route.start_point':'m','bus_route.end_point':'u','bus_route.route':'l'}
	return Response(TEMPLATE_TEXT)
	return Response("Invalid Bus No:%s" % bus_no)