WebPy Sessions with Templates

问题

Using Webpy. I have the following code in my app.py:

app = web.application(urls, globals())
session = web.session.Session(app, web.session.DiskStore('sessions'), initializer={'count': 0, 'username': 'CRC'})
render = web.template.render('templates/', base="base", globals={'context': session, 'username': 'CRC'})

class Index(object):
    def GET(self):

        if not session:
                session.count = 0
        else:
                session.count = 1

        return render.hello_form()

    def POST(self):
        form = web.input(name="Nobody", greet="Hello")
        greeting = "%s, %s" % (form.greet, form.name)
        return render.index(greeting = greeting)

And then the following in my index html file:

$def with (greeting)

<p>
Hi <b>$context.username</b>
</p>
$if greeting:
        I just wanted to say <em style="color: green; font-size: 2em;">$greeting</em>.
$else:
        I just wanted to say <em style="color: green; font-size: 2em;">Default</em>.

<p>
<a href="/hello">Link Back To Form</a>

I'm seeing this once I submit the form: at /hello 'ThreadedDict' object has no attribute 'username'

Python /Library/Python/2.7/site-packages/web/session.py in getattr, line 64 Web POST /hello

Any thoughts on why I am seeing this? It obviously doesn't like what I am doing with username, but it's not clear to me why.

回答1:

As the error says, the context variable (which is actually mapped to session), has no attribute username. Instead, you've defined username as a global var itself.

Try accessing username directly in your template as $username, or make the assignment session['username'] = 'CRC' in app.py, so that $context.username is valid when you access it in the template file.

来源：https://stackoverflow.com/questions/10906963/webpy-sessions-with-templates

标签

session

web.py