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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>7.4. Pyramid</title><link rel="stylesheet" type="text/css" href="/docbook.css" /><meta name="generator" content="DocBook XSL Stylesheets V1.78.1" /><meta name="keywords" content="php, pear, pecl, phar" /><link rel="home" href="index.html" title="Netkiller Python 手札" /><link rel="up" href="ch07.html" title="第 7 章 Frameworks" /><link rel="prev" href="django.html" title="7.3. Django" /><link rel="next" href="gevent.html" title="第 8 章 gevent: A coroutine-based network library for Python" /></head><body><table xmlns="" width="100%" border="0"><tr><td align="left"><a href="http://netkiller.github.io/">Home</a> |
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<div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="idp57949280"></a>7.4.1. Getting Started</h3></div></div></div>
<pre class="screen">
$ sudo apt-get install python-setuptools
$ sudo easy_install -U pyramid
</pre>
<div class="section"><div class="titlepage"><div><div><h4 class="title"><a id="virtualenv"></a>7.4.1.1. virtualenv - create virtual Python instances</h4></div></div></div>
<p></p>
<pre class="screen">
sudo apt-get install python-virtualenv
virtualenv --no-site-packages myenv
cd myenv
$ sudo easy_install -U pyramid
</pre>
</div>
<div class="section"><div class="titlepage"><div><div><h4 class="title"><a id="pyramid.helloworld"></a>7.4.1.2. Hello world</h4></div></div></div>
<pre class="screen">
$ vim test/helloworld.py
from pyramid.config import Configurator
from pyramid.response import Response
from paste.httpserver import serve
def hello_world(request):
return Response('Hello world!')
def goodbye_world(request):
return Response('Goodbye world!')
if __name__ == '__main__':
config = Configurator()
config.add_view(hello_world)
config.add_view(goodbye_world, name='goodbye')
app = config.make_wsgi_app()
serve(app, host='0.0.0.0')
</pre>
<pre class="screen">
$ python test/helloworld.py
serving on 0.0.0.0:8080 view at http://127.0.0.1:8080
$ curl http://127.0.0.1:8080/
Hello world!
$ curl http://127.0.0.1:8080/goodbye
Goodbye world!
</pre>
</div>
<div class="section"><div class="titlepage"><div><div><h4 class="title"><a id="idp57955520"></a>7.4.1.3. MongoDB</h4></div></div></div>
<pre class="screen">
$ sudo apt-get install python-pymongo python-gridfs
</pre>
<pre class="screen">
vim development.ini
[app:test]
# mongodb settings ...
db_uri = mongodb://localhost/
db_name = test
</pre>
<p>测试</p>
<pre class="screen">
from pyramid.config import Configurator
from pyramid.events import subscriber
from pyramid.events import NewRequest
from gridfs import GridFS
import pymongo
def main(global_config, **settings):
config = Configurator(settings=settings)
db_uri = settings['db_uri']
conn = pymongo.Connection(db_uri)
config.registry.settings['db_conn'] = conn
config.add_subscriber(add_mongo_db, NewRequest)
config.add_route('dashboard', '/')
# other routes and more config...
config.scan('myapp')
return config.make_wsgi_app()
def add_mongo_db(event):
settings = event.request.registry.settings
db = settings['db_conn'][settings['db_name']]
event.request.db = db
event.request.fs = GridFS(db)
</pre>
<pre class="screen">
@view_config(route_name='dashboard',
renderer="myapp:templates/dashboard.pt")
def dashboard(request):
vendors = request.db['vendors'].find()
return {'vendors':vendors}
</pre>
</div>
</div>
<div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="idp57959488"></a>7.4.2. Creating a Pyramid Project</h3></div></div></div>
<pre class="screen">
$ paster create -t pyramid_starter test
$ cd test
$ sudo python setup.py develop
$ paster serve development.ini
</pre>
<div class="section"><div class="titlepage"><div><div><h4 class="title"><a id="idp57960640"></a>7.4.2.1. mongodb</h4></div></div></div>
<pre class="screen">
vim development.ini
[app:test]
# mongodb settings ...
mongodb_uri = mongodb://localhost/
mongodb_name = test
</pre>
<pre class="screen">
vim test/resources.py
from gridfs import GridFS
import pymongo
mongo_conn = pymongo.Connection()
def add_mongo(event):
req = event.request
req.db = mongo_conn['test']
req.fs = GridFS(req.db)
class Root(object):
def __init__(self, request):
self.request = request
</pre>
<pre class="screen">
$ vim test/__init__.py
def main(...):
...
config.add_subscriber('foo.resources.add_mongo',
'pyramid.events.NewRequest')
...
</pre>
<div class="example"><a id="idp57963552"></a><p class="title"><strong>例 7.1. __init__.py</strong></p><div class="example-contents">
<pre class="screen">
from pyramid.config import Configurator
from test.resources import Root
def main(global_config, **settings):
""" This function returns a Pyramid WSGI application.
"""
config = Configurator(root_factory=Root, settings=settings)
config.add_subscriber('test.resources.add_mongo','pyramid.events.NewRequest')
config.add_view('test.views.my_view',
context='test:resources.Root',
renderer='test:templates/mytemplate.pt')
config.add_static_view('static', 'test:static')
return config.make_wsgi_app()
</pre>
</div></div><br class="example-break" />
</div>
</div>
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