web.py使用PostgreSQL数据库的用户身份验证示例

Question

我想从web.py食谱中复制和使用示例'PostgreSQL数据库的用户身份验证'。我无法弄清楚为什么我会收到以下错误。

1. 在/登录 'ThreadedDict' 对象没有属性 '登录'

2. 在/登录 'ThreadedDict' 对象没有属性 '特权'

这里是错误输出到终端的第二个错误。 （第一个几乎相同）

 
Traceback (most recent call last): 
    File "/usr/local/lib/python2.7/dist-packages/web.py-0.37-py2.7.egg/web/application.py", line 239, in process 
    return self.handle() 
    File "/usr/local/lib/python2.7/dist-packages/web.py-0.37-py2.7.egg/web/application.py", line 230, in handle 
    return self._delegate(fn, self.fvars, args) 
    File "/usr/local/lib/python2.7/dist-packages/web.py-0.37-py2.7.egg/web/application.py", line 420, in _delegate 
    return handle_class(cls) 
    File "/usr/local/lib/python2.7/dist-packages/web.py-0.37-py2.7.egg/web/application.py", line 396, in handle_class 
    return tocall(*args) 
    File "/home/erik/Dropbox/Python/Web.py/Code.py", line 44, in GET 
    render = create_render(session.privilege) 
    File "/usr/local/lib/python2.7/dist-packages/web.py-0.37-py2.7.egg/web/session.py", line 71, in __getattr__ 
    return getattr(self._data, name) 
AttributeError: 'ThreadedDict' object has no attribute 'privilege' 

127.0.0.1:36420 - - [25/Aug/2012 01:12:38] "HTTP/1.1 GET /login" - 500 Internal Server Error 

这是我的code.py文件。从烹饪书中可以看到很多剪切粘贴。我试着把所有的类和def放在主代码的顶部。我也试着用sudo启动python，如另一篇文章中提到的。

 
import web 

class index: 
    def GET(self): 
     todos = db.select('todo') 
     return render.index(todos) 

class add: 
    def POST(self): 
     i = web.input() 
     n = db.insert('todo', title=i.title) 
     raise web.seeother('/') 

def logged(): 
    return False #I added this to test error #1, Now I get error #2 
    #if session.login==1: 
    # return True 
    #else: 
    # return False 

def create_render(privilege): 
    if logged(): 
     if privilege == 0: 
      render = web.template.render('templates/reader') 
     elif privilege == 1: 
      render = web.template.render('templates/user') 
     elif privilege == 2: 
      render = web.template.render('templates/admin') 
     else: 
      render = web.template.render('templates/communs') 
    else: 
     render = web.template.render('templates/communs') 
    return render 



class Login: 

    def GET(self): 
     if logged(): 
      render = create_render(session.privilege) 
      return '%s' % render.login_double() 
     else: 
      # This is where error #2 is 
      render = create_render(session.privilege) 
      return '%s' % render.login() 

    def POST(self): 
     name, passwd = web.input().name, web.input().passwd 
     ident = db.select('users', where='name=$name', vars=locals())[0] 
     try: 
      if hashlib.sha1("sAlT754-"+passwd).hexdigest() == ident['pass']: 
       session.login = 1 
       session.privilege = ident['privilege'] 
       render = create_render(session.privilege) 
       return render.login_ok() 
      else: 
       session.login = 0 
       session.privilege = 0 
       render = create_render(session.privilege) 
       return render.login_error() 
     except: 
      session.login = 0 
      session.privilege = 0 
      render = create_render(session.privilege) 
      return render.login_error() 


class Reset: 

    def GET(self): 
     session.login = 0 
     session.kill() 
     render = create_render(session.privilege) 
     return render.logout() 




#web.config.debug = False 

render = web.template.render('templates/', base='layout') 
urls = (
    '/', 'index', 
    '/add', 'add', 
    '/login', 'Login', 
    '/reset', 'Reset' 
    ) 

app = web.application(urls, globals()) 
db = web.database(dbn='postgres', user='hdsfgsdfgsd', pw='dfgsdfgsdfg', db='postgres', host='fdfgdfgd.com') 

store = web.session.DiskStore('sessions') 

# Too me, it seems this is being ignored, at least the 'initializer' part 
session = web.session.Session(app, store, initializer={'login': 0, 'privilege': 0}) 



if __name__ == "__main__": app.run() 

Answer 1

好的，我能弄清楚我做错了什么。总新手的东西和学习过程的所有部分。这个代码现在可以工作，主要是。我被卡住的部分现在正在工作。看到我的评论在代码

感谢

 
import web 

web.config.debug = False 

render = web.template.render('templates/', base='layout') 
urls = (
    '/', 'index', 
    '/add', 'add', 
    '/login', 'Login', 
    '/reset', 'Reset' 
    ) 

app = web.application(urls, globals()) 
db = web.database(blah, blah, blah) 

store = web.session.DiskStore('sessions') 
session = web.session.Session(app, store, initializer={'login': 0, 'privilege': 0}) 


class index: 
    def GET(self): 
     todos = db.select('todo') 
     return render.index(todos) 

class add: 
    def POST(self): 
     i = web.input() 
     n = db.insert('todo', title=i.title) 
     raise web.seeother('/') 

def logged(): 
    if session.get('login', False): 
     return True 
    else: 
     return False 

def create_render(privilege): 
    if logged(): 
     if privilege == 0: 
      render = web.template.render('templates/reader') 
     elif privilege == 1: 
      render = web.template.render('templates/user') 
     elif privilege == 2: 
      render = web.template.render('templates/admin') 
     else: 
      render = web.template.render('templates/communs') 
    else: 
       ## This line is key, i do not have a communs folder, thus returning an unusable object 
     #render = web.template.render('templates/communs') #Original code from example 

     render = web.template.render('templates/', base='layout') 
    return render 



class Login: 

    def GET(self): 
     if logged(): 
         ## Using session.get('something') instead of session.something does not blow up when it does not exit 
      render = create_render(session.get('privilege')) 
      return '%s' % render.login_double() 
     else: 
      render = create_render(session.get('privilege')) 
      return '%s' % render.login() 

    def POST(self): 
     name, passwd = web.input().name, web.input().passwd 
     ident = db.select('users', where='name=$name', vars=locals())[0] 
     try: 
      if hashlib.sha1("sAlT754-"+passwd).hexdigest() == ident['pass']: 
       session.login = 1 
       session.privilege = ident['privilege'] 
       render = create_render(session.get('privilege')) 
       return render.login_ok() 
      else: 
       session.login = 0 
       session.privilege = 0 
       render = create_render(session.get('privilege')) 
       return render.login_error() 
     except: 
      session.login = 0 
      session.privilege = 0 
      render = create_render(session.get('privilege')) 
      return render.login_error() 


class Reset: 

    def GET(self): 
     session.login = 0 
     session.kill() 
     render = create_render(session.get('privilege')) 
     return render.logout() 


if __name__ == "__main__": app.run()