May 2005 - Zope - Zope lists

No ZMI - panic!!!!
by John Poltorak 25 May '05

25 May '05

I'm trying to update a Zope site which I set up some time ago but can't get the ZMI to start up. Any ideas on what to do? When I try to acccess http://mysite:8080/ I get - Zope Site Error. How do I force a login prompt or include a login in the URL? If this is a FAQ, please tell me which Q to look under. -- John

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newbie question
by Barry Drake 25 May '05

25 May '05

I'm getting an error in CMFCore.utils in the _mergedLocalRoles function. The error is: Exception Type TypeError Exception Value can only concatenate tuple (not "list") to tuple I modify utils.py, after saving a copy, in order to obtain diagnostic output. Then I delete utils.pyc, after saving a copy, in order to force a recompile (even used compilezpy.py for this a couple of times). Zope never seems to use the new version. Also, I added comments ahead of the line where the error occurs so that the line number should be higher than the original error line number. But, it's always the same. I suspect that I have a fundamental misunderstanding of how Zope uses code in the Products directory. Is Zope storing all the compiled byte code in the data.fs file? Is there a way to force Zope to use new code? Also, the previous developer removed the Control Panel putting Plone as the root of everything. How can I get information that the Control Panel usually provides? System: Zope 2.7.1, Plone 2.0.5, Python 2.3.4, Red Hat 7.2 Thank you. Barry Drake The traceback: Traceback (innermost last): Module ZPublisher.Publish, line 101, in publish Module ZPublisher.mapply, line 88, in mapply Module ZPublisher.Publish, line 39, in call_object Module Products.CMFFormController.ControllerPageTemplate, line 80, in __call__ Module Products.CMFFormController.BaseControllerPageTemplate, line 39, in _call Module Products.CMFFormController.ControllerBase, line 243, in getNext Module Products.CMFFormController.Actions.TraverseTo, line 36, in __call__ Module ZPublisher.mapply, line 88, in mapply Module ZPublisher.Publish, line 39, in call_object Module Products.CMFFormController.ControllerPythonScript, line 159, in __call__ Module Shared.DC.Scripts.Bindings, line 306, in __call__ Module Shared.DC.Scripts.Bindings, line 343, in _bindAndExec Module Products.PythonScripts.PythonScript, line 323, in _exec Module None, line 19, in pag_edit - <ControllerPythonScript at /Plone/pag_edit used for /Plone/Members/bldrake/privLinks.pag> - Line 19 Module Products.CMFDefault.Document, line 192, in edit Module Products.CMFCore.CMFCatalogAware, line 69, in reindexObject Module Products.CMFCore.CatalogTool, line 262, in reindexObject Module Products.CMFCore.CatalogTool, line 235, in catalog_object Module Products.ZCatalog.ZCatalog, line 528, in catalog_object Module Products.ZCatalog.Catalog, line 381, in catalogObject Module Products.PluginIndexes.common.UnIndex, line 240, in index_object Module Products.PluginIndexes.KeywordIndex.KeywordIndex, line 61, in _index_object Module Products.PluginIndexes.KeywordIndex.KeywordIndex, line 94, in _get_object_keywords Module Products.CMFCore.CatalogTool, line 63, in allowedRolesAndUsers THE FOLLOWING ERROR SHOULD BE ON LINE 216 NOW, BUT HASN'T MOVED FROM THE ORIGINAL. Module Products.CMFCore.utils, line 215, in _mergedLocalRoles TypeError: can only concatenate tuple (not "list") to tuple

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RE: [Zope] Re: Modifying __bases__
by Dan Pozmanter 25 May '05

25 May '05

Yes, this definitely makes sense. Which is why monkey patching is never used lightly, but also why clean code and good documentation are so necessary. Any code is difficult to maintain when it is murky, undocumented, and the developer lacks the relevant historical background. In any case, I'll pass this on to the fellow who is muddling about with User Objects. Many Thanks, Dan -----Original Message----- From: zope-bounces+dan=siteworx.com(a)zope.org [mailto:zope-bounces+dan=siteworx.com@zope.org] On Behalf Of Derrick Hudson Sent: Wednesday, May 25, 2005 9:55 AM To: zope(a)zope.org Subject: [Zope] Re: Modifying __bases__ On Fri, May 20, 2005 at 05:10:30PM -0400, Dan Pozmanter wrote: | Out of curiosity, I've noticed the word "evil" attached to patching of | various and monkey kinds. Not "bad", or "unwise", but "evil", | implying a morality associated with the act. I think it is used mainly to give added emphasis to lessons learned from painful experience. As Paul reported, hours can be wasted tracing the wrong code trying to understand what is happening. | What is morally wrong with modifying live objects in a dynamic | language to achieve desired functionality? The problem is maintainability. When you dynamically rewrite the code, the code is then very difficult to follow, verify, and modify. It is even harder for someone else to maintain the code because they don't have the historical background to rememeber where , what and why the code is dynamically changed. | The idea is "I want to modify the zope core in a way that survives | version to version, yet does not impose a specific use case on all | zope users". The good pattern for handling this is to create a new class that extends the core classes that provide almost the functionality you want. Then, in your part of the database, create an instance of your class instead of the built-in core class. Specifically for your case, extend the basic UserFolder class to create instances of your custom User class instead of the built-in one. It would be good if the UserFolder allowed you to parameterize it so you could simply say "use this User class", but in the absence of that foresight, you can extend the UserFolder clas. HTH, -D -- Whoever loves discipline loves knowledge, but he who hates correction is stupid. Proverbs 12:1 www: http://dman13.dyndns.org/~dman/ jabber: dman(a)dman13.dyndns.org

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RE: [Zope] Modifying __bases__
by Dan Pozmanter 25 May '05

25 May '05

Out of curiosity, I've noticed the word "evil" attached to patching of various and monkey kinds. Not "bad", or "unwise", but "evil", implying a morality associated with the act. What is morally wrong with modifying live objects in a dynamic language to achieve desired functionality? The idea is "I want to modify the zope core in a way that survives version to version, yet does not impose a specific use case on all zope users". -----Original Message----- From: Tino Wildenhain [mailto:tino@wildenhain.de] Sent: Friday, May 20, 2005 2:38 PM To: Dan Pozmanter Cc: Andreas Jung; zope(a)zope.org Subject: RE: [Zope] Modifying __bases__ Am Freitag, den 20.05.2005, 13:48 -0400 schrieb Dan Pozmanter: > Well, when I run it, I am able to do the following: > > ------------------------------------ > class A: > pass > > class B(A): > pass > > b = B() > > B.__bases__ = () > > print B.__bases__ > ------------------------------------ > > Not so on the version that comes with zope. > (B.__bases__ will remain unchanged.) > > What I aim to do is have the User Object inherit from a custom class > (AlienUser). Well, you can just inherit with a class from zopes extension classes. You cannot modify the class bases like this with extension classes. You can work around that like I did with the history (monkey) patch: http://www.zope.org/Members/tino/PatchHistory/view Otherwise it sounds evil and you failed to show the true motivation with your example above. Tino. PS: Votes for a true implementation in current zope instead of the monkey patch? If so, tell me.

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RE: [Zope] Modifying __bases__
by Dan Pozmanter 25 May '05

25 May '05

Going with 2.8 sounds like a rather good solution. -----Original Message----- From: zope-bounces(a)zope.org [mailto:zope-bounces@zope.org] On Behalf Of Chris McDonough Sent: Friday, May 20, 2005 3:01 PM To: Paul Winkler Cc: zope(a)zope.org Subject: Re: [Zope] Modifying __bases__ You might also be able to do the __bases__ hack with Zope 2.8 (as long as Python 2.3+ allows you to assign to it), as it reimplements ExtensionClass using metaclasses instead of custom C hackery. On Fri, 2005-05-20 at 14:46 -0400, Paul Winkler wrote: > On Fri, May 20, 2005 at 01:48:46PM -0400, Dan Pozmanter wrote: > > What I aim to do is have the User Object inherit from a custom class > > (AlienUser). > > You can do that in two ways off the top of my head: > > 1) the good way: write a custom UserFolder. > You could probably get away with just inheriting from UserFolder and > overriding _doAddUser(). > > 2) the hacky way: monkeypatch User.py to replace SimpleUser with your > class. > > either way the stuff you are interested in is in AccessControl/User.py. > > _______________________________________________ Zope maillist - Zope(a)zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )

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It is a bug ? 404 error onfly
by fowlertrainer＠citromail.hu 25 May '05

25 May '05

Hi ! My contributor have a problem. His problem is very interesting, but it is in php. I try to help, but I get same problem in Zope. The problem is that: He have a site, and he is paranoid. He is not use static pages to avoid penetrations. So: in a dynamic page he is check the request. If parameters are wrong, he is want to set the resp. header status to 404. (This is a file downloader method, and if the file is invalid, he want to answer 404 - page not found.) He is not want to set location to a static 404 error page (because he is want to "protect" the orig. URL). When he is send header with php to Mozilla, or Opera, these browsers are showing blank page. IE is showing good page (404). Then I try to write this example in Zope, to help it: # test2.py # request = container.REQUEST resp=RESPONSE = request.RESPONSE resp.setStatus(404) When I try this, I get same result in Zope (/test2). So: what is the problem ? And what is the solution ? Thanx for help: ft

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Can ZPT form call a url?
by James O'Keefe 25 May '05

25 May '05

On our website we have a form where by a person can subscribe to our announcements list. It is the standard mailman form. We would like to expand on that form such that a user can enter their email address and zip code which we would log to our database and then call the url to subscribe the person in the mailman list. Is there a way to do this? Thanks! Jamie

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More tolerant Stripogram (solution)
by Jaroslav Lukesh 25 May '05

25 May '05

Hi all, I was extend SquishDot with wysiwyg editor (origin: vsbabu ieeditor). But it was not accept many tags due too small number of allowed html attributes in stripogram. I was patch stripogram to be more tolerant for eg., tables and other tags (missings: 'html' and 'body'). Make changes to following variables in html2safehtml.py, __init__.py and select your acceptable tags and make changes your code from where you are calling html stripping (for example in SquishDot 1.5 it is SquishSite.py, line 408). can_close = ['ul','li','p','dd','dl','dt','ol','option','bdo','listing','map','optgroup','option','param', 'marquee','menu','multicol','nobr','noembed','noframes','nolayer','noscript','plaintext','pre','q','rt','ruby','s','samp', 'b','i','u','big','small','em','strong','blink','blockquote','center','cite','code','tt','ins','kbd','keygen', 'table','del','strike-thru','dfn','fieldset','font','form','frame','frameset','label''caption','legend', 'h1','h2','h3','h4','h5','h6','head','iframe','ilayer','layer','object','select','strike','sub','sup', 'trow','thead','tbody','textarea','tr','tt','var','xml','xmp','title', 'div','span','a','abbr','acronym','area','th','td'] never_close = ['br','wbr','hr', 'input', 'isindex','base','meta','basefont','bgsound','button','spacer', 'col','colgroup','embed','isindex','link', 'img'] If you want to save space ant you put 'td', 'th','tr', 'p' etc to never_close (which is acceptable for browsers), stripping will destroy html code :-( I dont know if some tag is missing (so sorry), it was done with "visibone web designer's html card" on the desk, not w3c. Best Regards, -- Jaroslav Lukesh ----------------------------------------------------------- This e-mail can not contain any viruses because I use Linux

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display object without index_html
by Christopher Rivard 25 May '05

25 May '05

i am developing a Zope product (2.7) with a "homepage" content type and want this object to display as the index of a folder. for other custom objects, i have display methods that call an index view ( using DTMLFile) of the object like this: #homepage view index_html = DTMLFile('dtml/indexHomepage', globals()) i want this object to display as the index of the folder without: folder/index_html/index_html however, when i render the object, i get: <Homepage at index_html> remove display: http://localhost:8080/www/index_html/index_html has an empty or missing docstring. Objects must have a docstring to be published. how can i ensure that an "homepage" object with an id of index_html will display as the index of a folder (without calling folder/index_html/index_html)? i hope i explained this coherently... any insight would be greatly appreciated- Thanks, Chris

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mod_zope development
by David Bear 25 May '05

25 May '05

a quick google on mod_zope yeilded http://codespeak.net/z3/modzope/ and some other very old stuff. Anyone know the status of this project? It is a new page... I'm interested in how Zope Corp views this project and what Zope corp may have in the future regarding apache style pluggins. -- David Bear phone: 480-965-8257 fax: 480-965-9189 College of Public Programs/ASU Wilson Hall 232 Tempe, AZ 85287-0803 "Beware the IP portfolio, everyone will be suspect of trespassing"

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