TypeError:“未定义”对象不可iterable？

Question

下面是我创建的mako模板

<%inherit file="/openerp/controllers/templates/base_dispatch.mako"/>
<%def name="header()">
    <title>${_("Otp")}</title>
    <script type="text/javascript">alert("OTP PAGE");</script>
</%def>
<%def name="content()">
    <table width="100%">
        <tr><%include file="header.mako"/></tr>
    </table>
    </br>
    <table class="view" cellpadding="0" cellspacing="0" style="padding-top: 10px; border:none;" align="center">
        <tr>
            <td style="padding:35px 10px 5px 35px; width="450"  align="center">
                <form action="${py.url(target)}" method="post" name="otpform" id="otpform" style="padding-bottom: 5px; min-width: 100px;">
                    % for key, value in origArgs.items():
                        <input type="hidden" name="${key}" value="${value}"/>
                    % endfor
                   <input name="otp_action" value="otp" type="hidden"/>
                   <fieldset class="box" style="width:300px">
                        <legend style="padding: 4px;">
                            <img src="/openerp/static/images/stock/stock_person.png" alt=""/>
                        </legend>
                        <div class="box2" style="padding: 5px 5px 20px 5px">
                            <b>Please enter SMS code</b>
                            <table width="" cellspacing="2px" cellpadding="0" style="border:none;">

                                <tr>
                                    <td class="label"><label for="otp">${_("Otp:")}</label></td>
                                    <td style="padding: 3px;"><input type="text" id="otp" name="otp" class="db_user_pass" value="${otp}" autofocus="true"/></td>
                                </tr>
                                <tr>
                                    <td></td>
                                    <td class="db_login_buttons">
                                        <button type="submit" class="static_boxes">${_("Otp")}</button>
                                    </td>
                                </tr>
                            </table>
                        </div>
                    </fieldset>
                </form>

            </td>
        </tr>
    </table>

    <%include file="footer.mako"/>
</%def>

模板的python文件是

import re
from openobject.controllers import BaseController
import cherrypy
from openerp.utils import rpc
from mako.lookup import TemplateLookup
from mako.template import Template
from openobject import tools
import openobject
from openobject.tools import expose, url, redirect, validate, error_handler
import formencode
import base64
import time

class OTP(BaseController):

    _cp_path = "/openerp/otp"
    msg = {
           }

    def __init__(self, *args, **kwargs):
        super(OTP, self).__init__(*args, **kwargs)
        self._msg = {}

    @expose()
    def index(self, *args, **kw):
        print '>>>>>>>>>>>>>>>>>>>>>>>INDEX<<<<<<<<<<<<<<<<<<<<<<<<<<'
        self.msg = {}
        target='/'
        url='socket://localhost:8070'
        action='otp'
        info=''
        info = None
        message=''
        origArgs=self.get_orig_args(kw)
        self.otp_check(target, action, message, origArgs)

    @expose(template="/openerp/controllers/templates/otp.mako")
    def otp_check(self, target, action=None, message=None, origArgs={}):
        print '>>>>>>>>>>>>>>>>>>>>>>>otp_check<<<<<<<<<<<<<<<<<<<<<<<<<<'
        target='/'
        url='socket://localhost:8070'
        action='otp'
        info=''
        info = None
        return dict(target=target, url=url, action=action, message=message, origArgs=origArgs, info=info)

    def get_orig_args(self,kw):
        if not kw.get('otp_action'):
            return kw

        new_kw = kw.copy()
        clear_login_fields(new_kw)
        return new_kw

# vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:

但在运行它时，我在浏览器中遇到以下错误。

500 Internal Server Error

The server encountered an unexpected condition which prevented it from fulfilling the request.

Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.6/cherrypy/_cprequest.py", line 606, in respond
    cherrypy.response.body = self.handler()
  File "/usr/lib/pymodules/python2.6/cherrypy/_cpdispatch.py", line 25, in __call__
    return self.callable(*self.args, **self.kwargs)
  File "/home/zbeanz/workspace/Sms_authentication/openerp-web-6.0.4/openobject/tools/_expose.py", line 182, in func_wrapper
    res = func(*args, **kw)
  File "/home/zbeanz/workspace/Sms_authentication/openerp-web-6.0.4/openobject/controllers/_root.py", line 90, in default
    return request.handler()
  File "/usr/lib/pymodules/python2.6/cherrypy/_cpdispatch.py", line 25, in __call__
    return self.callable(*self.args, **self.kwargs)
  File "/home/zbeanz/workspace/Sms_authentication/openerp-web-6.0.4/openobject/tools/_expose.py", line 182, in func_wrapper
    res = func(*args, **kw)
  File "/home/zbeanz/workspace/Sms_authentication/openerp-web-6.0.4/addons/openerp/controllers/otp.py", line 83, in index
    self.otp_check(target, action, message, origArgs)
  File "/home/zbeanz/workspace/Sms_authentication/openerp-web-6.0.4/openobject/tools/_expose.py", line 222, in func_wrapper
    return render_template(_template, res).encode("utf-8")
  File "/home/zbeanz/workspace/Sms_authentication/openerp-web-6.0.4/openobject/tools/_expose.py", line 141, in render_template
    return utils.NoEscape(template.render_unicode(**kw))
  File "/usr/lib/pymodules/python2.6/mako/template.py", line 138, in render_unicode
    return runtime._render(self, self.callable_, args, data, as_unicode=True)
  File "/usr/lib/pymodules/python2.6/mako/runtime.py", line 364, in _render
    _render_context(template, callable_, context, *args, **_kwargs_for_callable(callable_, data))
  File "/usr/lib/pymodules/python2.6/mako/runtime.py", line 381, in _render_context
    _exec_template(inherit, lclcontext, args=args, kwargs=kwargs)
  File "/usr/lib/pymodules/python2.6/mako/runtime.py", line 414, in _exec_template
    callable_(context, *args, **kwargs)
  File "_openobject_controllers_templates_base_mako", line 61, in render_body
  File "/usr/lib/pymodules/python2.6/mako/runtime.py", line 255, in <lambda>
    return lambda *args, **kwargs:callable_(self.context, *args, **kwargs)
  File "_openerp_controllers_templates_otp_mako", line 89, in render_content
TypeError: 'Undefined' object is not iterable

是什么导致了这个错误？

Answer 1

错误描述非常清楚。

'Undefined' object is not iterable

也就是说，您有一个list对象，并尝试在mako文件中迭代。但在运行时，对象没有赋值。所以对象是未定义的。在您的例子中，您只迭代一个变量

% for key, value in origArgs.items():
     <input type="hidden" name="${key}" value="${value}"/>
% endfor

运行时检查变量origArgs是否有值。处理这种异常很好，如下所示

%if origArgs:
    % for key, value in origArgs.items():
       <input type="hidden" name="${key}" value="${value}"/>
    % endfor
 %endif

如果这不是导致错误的原因，那么检查文件“/openerp s/controllers/templates/base_dispatch.mako”中的iterables。你一定能拿到。如果仍然没有运气，请在下面留言。干杯！！