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Error in python method...
by Joseph Thomas (s) 14 Jan '09

14 Jan '09

I'm going thru the online zope book (2.6) and trying out the simple interest rate calculator web application under the section: Creating a Basic Zope Application Using Page Templates and Scripts http://www.zope.org/Documentation/Books/ZopeBook/2_6Edition/BasicObject. stx I'll attach the error log: Time 2009/01/13 09:57:11.072 US/Central User Name (User Id) admin (admin) Request URL http://localhost:8080/interest/interestRateDisplay Exception Type AttributeError Exception Value calculateCompoundingInterest Traceback (innermost last): * Module ZPublisher.Publish, line 119, in publish * Module ZPublisher.mapply, line 88, in mapply * Module ZPublisher.Publish, line 42, in call_object * Module Shared.DC.Scripts.Bindings, line 313, in __call__ * Module Shared.DC.Scripts.Bindings, line 350, in _bindAndExec * Module Products.PageTemplates.ZopePageTemplate, line 330, in _exec * Module Products.PageTemplates.ZopePageTemplate, line 427, in pt_render * Module Products.PageTemplates.PageTemplate, line 89, in pt_render * Module zope.pagetemplate.pagetemplate, line 117, in pt_render * Module zope.tal.talinterpreter, line 271, in __call__ * Module zope.tal.talinterpreter, line 346, in interpret * Module zope.tal.talinterpreter, line 623, in do_insertText_tal * Module Products.PageTemplates.Expressions, line 228, in evaluateText * Module zope.tales.tales, line 696, in evaluate URL: /interest/interestRateDisplay Line 10, Column 4 Expression: <PythonExpr here.calculateCompoundingInterest(principal, interest_rate, periods, years)> Names: * {'container': <Folder at /interest>, * 'context': <Folder at /interest>, * 'default': <object object at 0x0071C528>, * 'here': <Folder at /interest>, * 'loop': {}, * 'nothing': None, * 'options': {'args': ()}, * 'repeat': <Products.PageTemplates.Expressions.SafeMapping object at 0x06EB1A08>, * 'request': <HTTPRequest, URL=http://localhost:8080/interest/interestRateDisplay>, * 'root': <Application at >, * 'template': <ZopePageTemplate at /interest/interestRateDisplay>, * 'traverse_subpath': [], 'user': <PropertiedUser 'admin'>} * Module Products.PageTemplates.ZRPythonExpr, line 49, in __call__ __traceback_info__: here.calculateCompoundingInterest(principal, interest_rate, periods, years) * Module PythonExpr, line 1, in <expression> AttributeError: calculateCompoundingInterest form interest_rate 12.0 years 12 periods 4 principal 20000.0 Does this indicate an error with my python script? Joseph Thomas College of American Pathologists http://www.cap.org <http://www.cap.org/> Consider our environment; please print this e-mail only if truly necessary. Thank you!

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appending paths in zpt
by Garry Saddington 13 Jan '09

13 Jan '09

I have this: tal:attributes="href here/getUserName" in a link that works but I want to append a hard coded extension to it. How would I turn it into this and get it to work ? tal:attributes="href here/getUserName/listview?page=1000" Regards Garry

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Re: [Zope] how to set anonymous access to authorized content?
by Dieter Maurer 12 Jan '09

12 Jan '09

Jaroslav Lukesh wrote at 2009-1-12 11:35 +0100: >>>But what to do with ZSQL methods? I was create Python script called >>>ZSQL_query: > >Hi all, > >so the only one functional and clean method is to use web_client. > >External method: > >from ZPublisher import Client >def wc_list(xmyparam='URL parameter',xmyparam1='URL parameter'): > return >Client.call('http://authorized.domain.com/page.htm','login_username','login_password', >myparam=xmyparam, myparam1=xmyparam1) I do not think that this is a good solution: it is risky to make web requests to ones own Zope instance. To see the risk, assume for a moment that your allow just for a single worker. Then http requests to itself will deadlock deterministically. The risk is smaller for larger numbers of workers -- but never zero. For two workers, assume that both start to execute requests that later make the client call. Deadlock will be the result again. Why does the Python script with proxy role not work (I did not understand this)? It should! -- Dieter

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Re: [Zope] how to set anonymous access to authorized content?
by Dieter Maurer 11 Jan '09

11 Jan '09

Jaroslav Lukesh wrote at 2009-1-9 19:06 +0100: > ... >But what to do with ZSQL methods? I was create Python script called >ZSQL_query: > >## Script (Python) "ZSQL_query" > ... >##parameters=my_string > .... >result=context.folder_few_levels_above.ZSQL_query(my_string=my_string) >return len(result) > > > >But I was receive error: > >Error Type: TypeError >Error Value: ZSQL_query() takes exactly 1 argument (0 given) >..... > File /var/zope/lib/python/DocumentTemplate/DT_Let.py, line 75, in render > (Object: LET_druh_prace="ZSQL_query()") > File /var/zope/lib/python/DocumentTemplate/DT_Util.py, line 159, in eval > (Object: ZSQL_query()) > (Info: ZSQL_query) > File <string>, line 2, in f > File /var/zope/lib/python/Shared/DC/Scripts/Bindings.py, line 252, in >__call__ > (Object: ZSQL_query) > File /var/zope/lib/python/Shared/DC/Scripts/Bindings.py, line 283, in >_bindAndExec > (Object: ZSQL_query) > File /var/zope/lib/python/Products/PythonScripts/PythonScript.py, line >302, in _exec > (Object: ZSQL_query) > (Info: ({'script': <PythonScript instance at 9570fc0>, 'context': ><Folder instance at 969a378>, 'container': <Folder instance at >969a378>, 'traverse_subpath': []}, (), {}, None)) >TypeError: (see above) Apparently, the problem occurs when your Python Script "ZSQL_query" (not the ZSQL method) is called. Apparently, the Python Script is called without parameters but it requires a parameter "my_string". -- Dieter

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automagic bome header at start of utf16 content?
by Jürgen Herrmann 08 Jan '09

08 Jan '09

hello! i'm debugging a problem with our licence generation application. it spits out a ini file for our actual licence generator program (windows exe). to maintain backwards compatibility with an older version i try to encode the content windows-1252 if possibly, utf16 otherwise. on top of the method id do somthing like this: REQUEST.RESPONSE.setHeader('Content-Type', 'x-limiall-ini') REQUEST.RESPONSE.setHeader('Content-Disposition', 'attachment; filename=bla.blub') lines is a list of unicode strings. then i do: try: return '\r\n'.join(lines).encode('windows-1252') except UnicodeEncodeError: return '\r\n'.join(lines).encode('utf16') if there are unicode chars in the strings, that cannot be encoded in windows-1252, i get a file with a correct BOM header at the start ('\xFF\xFE'), which is exactly what we need. but i wonder where it comes from. i already sent the request directly to the zope server omitting our apache proxy and monitored traffic with wireshark. the com header comes from zope. i did not find anything in zope's code that heuristically finds out this is utf16 content and prepends the BOM header. so i'm a bit confused where zope takes it's wisdom from :) anybody? best regards, jürgen herrmann

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how to set anonymous access to authorized content?
by Jaroslav Lukesh 06 Jan '09

06 Jan '09

Hi all, I need to set-up page with anonymous access with some informations from site, where are authorized access only. This page call dtml method list_robot from authorized site, from where are called other authorized methods and documents. From authorized site list_robot works, of course. Site structure: domain.com/authorized_pages.htm domain.com/public/index_html I was set-up to allow view etc for anonymous (and for all users) in security tab for "public" folder, index_html have defined proxy role "manager" and I am still not able to get content from authorized site content. And it still could not get DTML document js_lib (it is called as <dtml-var js_lib>) from authorized site. If I was comment js_lib calling, then it fails that used ZSQL method does not exist... Error Type: KeyError Error Value: js_lib This resource may be trying to reference a nonexistent object or variable js_lib. Traceback (innermost last): File /var/zope/lib/python/ZPublisher/Publish.py, line 150, in publish_module File /var/zope/lib/python/ZPublisher/Publish.py, line 114, in publish File /var/zope/lib/python/Zope/__init__.py, line 159, in zpublisher_exception_hook (Object: public) File /var/zope/lib/python/ZPublisher/Publish.py, line 98, in publish File /var/zope/lib/python/ZPublisher/mapply.py, line 88, in mapply (Object: index_html) File /var/zope/lib/python/ZPublisher/Publish.py, line 39, in call_object (Object: index_html) File /var/zope/lib/python/OFS/DTMLDocument.py, line 127, in __call__ (Object: index_html) File /var/zope/lib/python/DocumentTemplate/DT_String.py, line 473, in __call__ (Object: index_html) File /var/zope/lib/python/OFS/DTMLMethod.py, line 120, in __call__ (Object: list_robot) File /var/zope/lib/python/DocumentTemplate/DT_String.py, line 473, in __call__ (Object: list_robot) KeyError: (see above) It is Zope 2.5.1. Would you like to point me, where I was make error, please? Many thanks, J. Lukesh

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Cacheable and invalidation
by Jean-Michel FRANCOIS 30 Dec '08

30 Dec '08

Hi, I m trying to invalidate one entry (and not all entries) of one FSPythonScript i have set to be cached in RamCache ZCacheable_invalidate() invalidate all entries <code> def ZCacheable_invalidate(self, view_name='', REQUEST=None): '''Called after a cacheable object is edited. Causes all cache entries that apply to the view_name to be removed. Returns a status message. ''' </code> is it possible ? By reading the code I supposed this is not. Thanks JeanMichel FRANCOIS Makina-Corpus

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cron or time server
by Garry Saddington 30 Dec '08

30 Dec '08

Does anyone know of a time/cron server for Zope that works. I want to be able to schedule a script to run every hour or so? Regards Garry

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Experiment: Pyjamas with Zope
by Jim Washington 29 Dec '08

29 Dec '08

So, I have a need to put together a more elaborate web page. Lots of pop-up dialog boxes and dynamically-updated choice lists. How to do that? I take a look at Pyjamas http://pyjs.org. Pretty cool. Here's the theory. Write fancy application web page in python using the Pyjamas/GWT API, then "compile" it to javascript. Serve it through zope, which will handle auth/auth. Client-server communication flows through json-rpc calls. What could possibly go wrong? First-off, just a simple test-of-concept. Edit the JSONRPCExample.py file in the examples/jsonrpc folder that came with pyjamas. I'll locate the jsonrpc service in zope's containment root, so I change the uri in EchoServicePython from "/services/EchoService.py" to "/". That's all I need to change. Compile it using the handy "build.sh" that's in the same folder. Look in the "output" folder and see what we got. Wow. a bunch of files. JSONRPCExample.IE6.cache.html Mozilla.cache.html OldMoz.cache.html Opera.cache.html Safari.cache.html JSONRPCExample.html JSONRPCExample.nocache.html corner_dialog_bottomleft.png corner_dialog_bottomleft_black.png corner_dialog_bottomright.png corner_dialog_bottomright_black.png corner_dialog_edge.png corner_dialog_edge_black.png corner_dialog_topleft.png corner_dialog_topleft_black.png corner_dialog_topright.png corner_dialog_topright_black.png history.html pygwt.js tree_closed.gif tree_open.gif tree_white.gif I'm lazy, so instead of doing a bunch of resource or view directives in ZCML, I let my paste.ini do the handling. [app:pyjs1] use=egg:Paste#static document_root=/home/jwashin/projects/pyjamas/pyjamas-0.4/examples/jsonrpc/output then, I link that in with the composite app. [composite:Paste.Main] use = egg:Paste#urlmap / = zope /images = images /pyjs1 = pyjs1 Now, to get to JSONRPCExample.html, I need to go to http://website/pyjs1/JSONRPCExample.html But first, I need to actually handle the json-rpc requests in zope. Make a servicetest.py. Almost exactly similar to EchoService.py in the output/services folder. from zif.jsonserver.jsonrpc import MethodPublisher class Services(MethodPublisher): def echo(self, msg): return msg def reverse(self, msg): return msg[::-1] def uppercase(self, msg): return msg.upper() def lowercase(self, msg): return msg.lower() Now, a ZCML incantation. <jsonrpc:view for="zope.app.folder.interfaces.IRootFolder" permission="zope.Public" methods="echo reverse uppercase lowercase" class = ".servicetest.Services" /> Start zope, and go to http://website/pyjs1/JSONRPCExample.html Nice page. Click the "Send to Python Service" button. Server Error or Invalid Response: ERROR 0 - Server Error or Invalid Response Damn. Pull up tcpwatch and see what we are getting. Aha. pyjamas app is sending jsonrpc with a content-type of application/x-www-form-urlencoded, so zope is not handing it off to zif.jsonserver for handling. Fix pyjamas or let zif.jsonserver handle this content-type? In zif.jsonserver's configure.zcml, in the "publisher" directive, add application/x-www-form-urlencoded to mimetypes. Restart zope. Go to http://website/pyjs1/JSONRPCExample.html It works. Change permissions in the jsonrpc:view directive. Restart zope. Go to the page. Page loads. Push the button, and I get a Basic HTTP Authentication dialog. Nice. Overall Results: So far, so good. :) - Jim Washington

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vaibhav4947 wants to keep up with you on Twitter
by vaibhav4947 18 Dec '08

18 Dec '08

To find out more about Twitter, visit the link below: http://twitter.com/i/eb416df134a504a9e2c334bc5f5f52bd66693dcc Thanks, -The Twitter Team About Twitter Twitter is a unique approach to communication and networking based on the simple concept of status. What are you doing? What are your friends doing—right now? With Twitter, you may answer this question over SMS or the Web and the responses are shared between contacts. This message was sent by a Twitter user who entered your email address. If you'd prefer not to receive emails when other people invite you to Twitter, click here: http://twitter.com/i/optout/97641e2661fefbad82dc8f5ee5f477f47e8a9f1c

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