尝试将web.py框架中的todolist转移到新浪云中的过程

     一直想尝试用一下新浪云的Python平台，今天下午找个一个空闲将web.py的官方例子todolist转移了一下。感觉还不错，将转移的过程与大家分享一下。

首先感觉新浪云平台的资料太不细了，其实有些例子反而让我有点头晕。我将转换中的注意事项与大家分享一下。

1、数据库连接问题。

需要将以前的数据库连接信息改一下，转换成SAE平台的专有信息

#!/usr/bin/env python
# coding: utf-8
import web
import sae.const
db =  web.database(dbn='mysql', user=sae.const.MYSQL_USER, pw=sae.const.MYSQL_PASS, host=sae.const.MYSQL_HOST, port=3307, db=sae.const.MYSQL_DB)

render = web.template.render('templates/', cache=False)

web.config.debug = True

config = web.storage(
    email='oooo@qq.com',
    site_name = '任务跟踪',
    site_desc = '',
    static = '/static',
)

web.template.Template.globals['config'] = config
web.template.Template.globals['render'] = render
print "settings.py is running"

2、官方给的起始例子太迷惑人了。特别是对模板的引用，我感觉没有啥用。我直接改成

render = web.template.render('templates/', cache=False)

3、其它的感觉还好，留下截图与源程序给大家参考，希望对大家有帮助。

index.wsgi

#!/usr/bin/env python
# coding: utf-8
import os
import sae
from config.url import urls
import web

app = web.application(urls, globals()).wsgifunc()
application = sae.create_wsgi_app(app)

todo.py

#!/usr/bin/env python
# coding: utf-8
import web
from config import settings
from datetime import datetime

print "controllers is running..."
render = settings.render
db = settings.db
tb = 'todo'

def get_by_id(id):
    s = db.select(tb, where='id=$id', vars=locals())
    if not s:
        return False
    return s[0]

class New:

    def POST(self):
        i = web.input()
        title = i.get('title', None)
        if not title:
            return render.error('标题是必须的', None)
        db.insert(tb, title=title, post_date=datetime.now())
        raise web.seeother('/')

class Finish:

    def GET(self, id):
        todo = get_by_id(id)
        if not todo:
            return render.error('没找到这条记录', None)
        i = web.input()
        status = i.get('status', 'yes')
        if status == 'yes':
            finished = 1
        elif status == 'no':
            finished = 0
        else:
            return render.error('您发起了一个不允许的请求', '/')
        db.update(tb, finished=finished, where='id=$id', vars=locals())
        raise web.seeother('/')

class Edit:

    def GET(self, id):
        todo = get_by_id(id)
        if not todo:
            return render.error('没找到这条记录', None)
        return render.todo.edit(todo)

    def POST(self, id):
        todo = get_by_id(id)
        if not todo:
            return render.error('没找到这条记录', None)
        i = web.input()
        title = i.get('title', None)
        if not title:
            return render.error('标题是必须的', None)
        db.update(tb, title=title, where='id=$id', vars=locals())
        return render.error('修改成功！', '/')

class Delete:

    def GET(self, id):
        todo = get_by_id(id)
        if not todo:
            return render.error('没找到这条记录', None)
        db.delete(tb, where='id=$id', vars=locals())
        return render.error('删除成功！', '/')

class Index:

    def GET(self):
        todos = db.select(tb, order='finished asc, id asc')
        return render.index(todos)

url.py

#!/usr/bin/env python
# coding: utf-8

pre_fix = 'controllers.'

urls = (
    '/',                    pre_fix + 'todo.Index',
    '/todo/new',            pre_fix + 'todo.New',
    '/todo/(\d+)',          pre_fix + 'todo.View',
    '/todo/(\d+)/edit',     pre_fix + 'todo.Edit',
    '/todo/(\d+)/delete',   pre_fix + 'todo.Delete',
    '/todo/(\d+)/finish',   pre_fix + 'todo.Finish',
    '/todo/test','mycontrollers.todo.mytest'
)

setttings.py

#!/usr/bin/env python
# coding: utf-8
import web
import sae.const
db =  web.database(dbn='mysql', user=sae.const.MYSQL_USER, pw=sae.const.MYSQL_PASS, host=sae.const.MYSQL_HOST, port=3307, db=sae.const.MYSQL_DB)

render = web.template.render('templates/', cache=False)

web.config.debug = True

config = web.storage(
    email='oooo@qq.com',
    site_name = '任务跟踪',
    site_desc = '',
    static = '/static',
)

web.template.Template.globals['config'] = config
web.template.Template.globals['render'] = render
print "settings.py is running"

希望对大家有帮助