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web.py 0.3 新手指南 - RESTful doctesting using app.request

2012-11-23 10:59 483 查看

!/usr/bin/env python

"""
RESTful web.py testing

usage: python webapp.py 8080 [--test]

>>> req = app.request('/mathematicians', method='POST')
>>> req.status
'400 Bad Request'

>>> name = {'first': 'Beno\xc3\xaet', 'last': 'Mandelbrot'}
>>> data = urllib.urlencode(name)
>>> req = app.request('/mathematicians', method='POST', data=data)
>>> req.status
'201 Created'
>>> created_path = req.headers['Location']
>>> created_path
'/mathematicians/b-mandelbrot'
>>> fn = '<h1 class="fn">{0} {1}</h1>'.format(name['first'], name['last'])
>>> assert fn in app.request(created_path).data

"""

import doctest
import urllib
import sys

import web

paths = (
'/mathematicians(/)?', 'Mathematicians',
'/mathematicians/([a-z])-([a-z]{2,})', 'Mathematician'
)
app = web.application(paths, globals())

dbname = {True: 'test', False: 'production'}[sys.argv[-1] == '--test']
db = {} # db = web.database(..., db='math_{0}'.format(dbname))

class Mathematicians:

def GET(self, slash=False):
"""list all mathematicians and form to create new one"""
if slash:
raise web.seeother('/mathematicians')
mathematicians = db.items() # db.select(...)
return web.template.Template("""$def with (mathematicians)
<!doctype html>
<html>
<head>
<meta charset=utf-8>
<title>Mathematicians</title>
</head>
<body>
<h1>Mathematicians</h1>
$if mathematicians:
<ul class="blogroll">
$for path, name in mathematicians:
<li class="vcard"><a class="fn url"
href=/mathematicians/$path>$name.first $name.last</a></li>
</ul>
<form action=/mathematicians method=post>
<label>First <input name=first type=text></label>
<label>Last <input name=last type=text></label>
<input type=submit value=Add>
</form>
</body>
</html>""")(mathematicians)

def POST(self, _):
"""create new mathematician"""
name = web.input('first', 'last')
key = '{0}-{1}'.format(name.first[0].lower(), name.last.lower())
name.first, name.last = name.first.capitalize(), name.last.capitalize()
db[key] = name # db.insert(...)
path = '/mathematicians/{0}'.format(key)
web.ctx.status = '201 Created'
web.header('Location', path)
return web.template.Template("""$def with (path, name)
<!doctype html>
<html>
<head>
<meta charset=utf-8>
<title>Profile Created</title>
</head>
<body>
<p>Profile created for <a href=$path>$name.first $name.last</a>.</p>
</body>
</html>""")(path, name)

class Mathematician:

def GET(self, first_initial, last_name):
"""display mathematician"""
key = '{0}-{1}'.format(first_initial, last_name)
try:
mathematician = db[key] # db.select(...)
except KeyError:
raise web.notfound()
return web.template.Template("""$def with (name)
<!doctype html>
<html>
<head>
<meta charset=utf-8>
<title>$name.first $name.last</title>
</head>
<body class="vcard">
<p><a href=/mathematicians rel=up>Mathematicians</a> ▸</p>
<h1 class="fn">$name.first $name.last</h1>
</body>
</html>""")(mathematician)

if __name__ == "__main__":
if sys.argv[-1] == '--test':
doctest.testmod()
else:
app.run()

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