Python程序出现500未定义索引页
我刚在看Python的教程时，复制并跟着做了这个应用。
http://www.mongodb.com/presentations/building-web-applications-mongodb-introduction
文件结构如下：
./app
├── views/
│ ├── index.tpl
├── index.py
└── guestbookDAO.py
index.py
import bottle
import pymongo
import guestbookDAO
#This is the default route, our index page. Here we need to read the documents from MongoDB.
@bottle.route('/')
def guestbook_index():
mynames_list = guestbook.find_names()
return bottle.template('index', dict(mynames = mynames_list))
#We will post new entries to this route so we can insert them into MongoDB
@bottle.route('/newguest', method='POST')
def insert_newguest():
name = bottle.request.forms.get("name")
email = bottle.request.forms.get("email")
guestbook.insert_name(name,email)
bottle.redirect('/')
#This is to setup the connection
#First, setup a connection string. My server is running on this computer so localhost is OK
connection_string = "mongodb://localhost"
#Next, let PyMongo know about the MongoDB connection we want to use. PyMongo will manage the connection pool
connection = pymongo.MongoClient(connection_string)
#Now we want to set a context to the names database we created using the mongo interactive shell
database = connection.names
#Finally, let out data access object class we built which acts as our data layer know about this
guestbook = guestbookDAO.GuestbookDAO(database)
bottle.debug(True)
bottle.run(host='localhost', port=8082)
guestbookDAO.py
import string
class GuestbookDAO(object):
#Initialize our DAO class with the database and set the MongoDB collection we want to use
def __init__(self, database):
self.db = database
self.mynames = database.mynames
#This function will handle the finding of names
def find_names(self):
l = []
for each_name in self.mynames.find():
l.append({'name':each_name['name'], 'email':each_name['email']})
return l
#This function will handle the insertion of names
def insert_name(self,newname,newemail):
newname = {'name':newname,'email':newemail}
self.mynames.insert(newname)
index.tpl
<!DOCTYPE html>
<html>
<head>
<title>Welcome to MongoDB</title>
<style type="text/css">
body{font-family:sans-serif;color:#4f494f;}
form input {border-radius: 7.5px;}
h5{display: inline;}
.label{text-align: right}
.guestbook{float:left;padding-top:10px;}
.name{width:100%;float:left;padding-top: 20px}
</style>
</head>
<body>
<div class="wrapper">
<h1>Welcome To MongoDB!</h1>
<div class="guestbook_input">
<form method="post" class="form" action="/newguest">
Name: <input type="text" name="name"/>
Email: <input type="text" name="email"/>
<input type="submit" value="Add Guest"/>
</form>
</div>
<div class="guestbook">
<h3>Guests:</h3>
%for name in mynames:
<div class="name">
<h5>Name:</h5> {{name['name']}},
<h5>Email:</h5> {{name['email]']}}
</div>
%end
</div>
</div>
</body>
</html>
我在路由或模板定义上做错了什么，导致出现这个问题呢？
3 个回答
2
你的模板里有个拼写错误。把：
<h5>Email:</h5> {{name['email]']}}
换成：
<h5>Email:</h5> {{name['email']}}
希望这能帮到你。
3
你需要在 TEMPLATE_PATH 中添加你模板文件的绝对路径：
bottle.TEMPLATE_PATH.insert(0,'/absolut/path/to/your/templates/')
关于找不到Bottle模板的问题（常见问题解答）：
Bottle会在当前目录（./）和当前目录下的views文件夹（./views/）中寻找模板。在mod_python或mod_wsgi环境中，当前工作目录（./）是根据你的Apache设置决定的。
所以你需要把 index.py 改成：
import os
# Add these lines before `bottle.run` line.
BASE_DIR = os.path.abspath(os.path.dirname(__file__))
template_path = os.path.join(BASE_DIR, 'views')
bottle.TEMPLATE_PATH.insert(0, template_path)
...
...
bottle.debug(True)
bottle.run(host='localhost', port=8082)
注意：如果你从项目的根目录运行 python index.py：
mongoguestbook$ ls -la
guestbookDAO.py
guestbookDAO.pyc
index.py
README.md
views
mongoguestbook$ python index.py
那么你就不需要在 index.py 中添加上面的代码，因为 bottle.TEMPLATE_PATH 的默认值，如常见问题解答中所述是：
print(bottle.TEMPLATE_PATH)
# ['./', './views/'])
但是如果你添加了这些代码，那么你可以从根目录 $ python index.py 运行，或者从任何地方运行： $ python ~/workspace/so/mongoguestbook/index.py。
2
尝试在同一个文件夹里运行 index.py，比如你可以输入 python index.py 来运行，不要输入 python /same/directory/index.py 来运行。
我也遇到过这个问题。