May 2002 - Zope - Zope lists

Re: [Zope] [ANSWER] 500 error with IE on login
by Gregory Dudek 08 May '02

08 May '02

Re. my patch to zope to eliminate the default 500 error code: I considered a patch to the user folder product itself. Although I might have given up too soon, it didn't look feasible based on my limited knowledge of zope internals. I tried the obvious stuff but setting a "local" 302 or other code in the user folder didn't work because it got over-ridden later on the the authentication-catching process. Also, while removing all possibilities for a default 500 error from zope seems bad, note that in all those other (hypothetical) cases MSIE would also prevent you from seeing the potentially informative error page that zope might generate. In short, based on MSIE behaviour I think it's better if zope never generates a 500 error if it might also generate an informative error-message page. I might add this to the collector if I only knew how... > Have you had a look at the user folder you use in order to see where it > raises an exception (I guess that, but this might eventually lead to > HTTPResponse tacking the error 500 to the response)? > Maybe it's possible to patch the user folder(s) to set a 302 header?

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how to access the owner of an object?
by Brian Lalor 08 May '02

08 May '02

Hey all. Sorry if this has been covered before, but I did some searching yesterday and didn't come up with anything. I posted this earlier on the zpt list, but haven't received an answer yet, and it occurred to me this may not be zpt-specific. I'm *very* green with Zope, but like I handle most new things, I'm learning by diving in head first. I'm trying to put together something of a weblog on my Zope site. Each entry is a File object. I'm using a series of page templates to display each news entry, and I'd like to be able to say who posted the item; I intend to have each File object owned by the user who made the entry. How do I, either via Python or within the template, access the owner of the object? I don't see it as a property anywhere in the object hierarchy of the File object. Thanks, B -- Brian Lalor blalor(a)ithacabands.org

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import and setting tmp dir
by John Hunter 07 May '02

07 May '02

When I try and import a large zexp, I get a 'Error Value: [Errno 28] No space left on device' (traceback below). If I do a 'df' while the import is processing, I can see the it is my root partition that is filling up. My zope install dir does not live on the root partition, and I have set the TMPDIR env var in my zope start script to point to a non root partition that has plenty of space. When I start the python interpreter in this environment, with the same command that I use to start zope in 'start' and test the tempfile config, it points to the dir I set with TMPDIR (ie, /workn/tmp) >>> import tempfile >>> print tempfile.mktemp() /workn/tmp/(a)13559.0 However, if I restart zope and try to do the import again, I get the same device full message and I see with df that it is the root partition that is filling up again. I have no idea why this is happening -- is it possible that there is some tmp file allocation that is going on independently of tempfile with the import, and if so, can anyone suggest how I can set where that storage should reside? Thanks, John Hunter Zope Version (Zope 2.5.1b1 (source release, python 2.1, linux2), python 2.1.3, linux2) Python Version 2.1.3 (#1, Apr 12 2002, 00:33:22) [GCC 3.0.4] System Platform linux2 Traceback: Zope Error Zope has encountered an error while publishing this resource. Error Type: IOError Error Value: [Errno 28] No space left on device Troubleshooting Suggestions The URL may be incorrect. The parameters passed to this resource may be incorrect. A resource that this resource relies on may be encountering an error. For more detailed information about the error, please refer to the HTML source for this page. If the error persists please contact the site maintainer. Thank you for your patience. Traceback (innermost last): File /usr/local/Zope/lib/python/ZPublisher/Publish.py, line 150, in publish_module File /usr/local/Zope/lib/python/ZPublisher/Publish.py, line 114, in publish File /usr/local/Zope/lib/python/Zope/__init__.py, line 159, in zpublisher_exception_hook (Object: Zope) File /usr/local/Zope/lib/python/ZPublisher/Publish.py, line 98, in publish File /usr/local/Zope/lib/python/ZPublisher/mapply.py, line 88, in mapply (Object: manage_importObject) File /usr/local/Zope/lib/python/ZPublisher/Publish.py, line 39, in call_object (Object: manage_importObject) File /usr/local/Zope-2.5.1b1-src/lib/python/OFS/ObjectManager.py, line 521, in manage_importObject (Object: Zope) File /usr/local/Zope-2.5.1b1-src/lib/python/OFS/ObjectManager.py, line 537, in _importObjectFromFile (Object: Zope) File /usr/local/Zope/lib/python/ZODB/ExportImport.py, line 79, in importFile File /usr/local/Zope/lib/python/ZODB/Transaction.py, line 234, in commit File /usr/local/Zope/lib/python/ZODB/Connection.py, line 235, in commit File /usr/local/Zope/lib/python/ZODB/ExportImport.py, line 152, in _importDuringCommit File /usr/local/Zope/lib/python/ZODB/TmpStore.py, line 77, in store IOError: (see above)

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New search engine! eClickz.net
by eClickz 07 May '02

07 May '02

eClickz is a brand new pay-per-click (ppc) search engine where users can find relevant information on any topic conceivable. Features lightning fast search results and an affiliate program where webmasters can earn money by placing a search box on their website. Enjoy !

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Re: [Zope] transparent folders in zope 2.5.1
by Bob Corriher 07 May '02

07 May '02

L. Pelletier wrote: > I just upgraded to 2.5.1 and now Transparent Folders does not seem to be > working. The product doesn't appear broken, but requesting an object > within a TF returns a NameError. Is there a patch or something else I > need to do? > Transparent Folders installs a patch to OFS/Folders (I think). When you upgraded, that patch was overwritten. Reinstall Transparent Folders (it must be in the "ZopeHome"/lib/python/Products, not in an instance) and it should be OK. This has bitten me when I moved a site to a new installation and I just moved the product without reinstalling it. Bob Corriher P-Wave Inc.

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<dtml-in> tag in another <dtml-in> tag
by Leo 07 May '02

07 May '02

Hello, I have a problem to assign a variable in the dtml-in tag. If I use the following code, I can get the expected result. <dtml-in "test('/temp/1063')"> <a href="description_html?file=/temp/<dtml-in Inspector_Name><dtml-var UserID></dtml-in>/<dtml-var sequence-item>"><dtml-var sequence-item><br> </dtml-in> However, I want to get 1063 in line 1 from <dtml-in Inspector_Name><dtml-var UserID></dtml-in>, just like line 2, I failed. "Inspector_Name" is a ZSQL-method, to retrieve the UserID from the database by using the login name. "test(path)" is the external method to get the actual files name and directories name in the ext2 file system of Linux. I tried to use <dtml-in "test('/temp/<dtml-in Inspector_Name><dtml-var UserID></dtml-in>')"> instead of line 1. I failed. Please help. Thanks a lot. Leo

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Caching problem
by Jean-Francois.Doyon＠CCRS.NRCan.gc.ca 07 May '02

07 May '02

Hello, I have a DTML Method ... It actually outputs a .js JavaScript file ... I am trying to get the browsers to cache this JavaScript file by associating it with an HTTP Cache Manager ... But am having no success !!! The file is referred to through a <script src="" ... type link, and I know that browsers chache these because I tested it a while ago, with a .js file that was static and didn't live within Zope. Now I have a dynamic .js file within Zope and behind an HTTP Cache Manager, but Zope/Z2 insists on returning HTTP code 200 !! The funny thing is I have other objects under this cache that DO get cached. the thing is those are images ... not dynamic content. I tried switching to a RAM Cache Manager thinking if I cache the results of the DTML Method, then the browser should be able to cache it ... But no, still sending 200's ... I even tried associating the RAM cache to the HTTP cache, but that didn't work at all ... What am I missing ? How do I get these DTML Methods to cache at the browser ? these files are fairly big, so it's causing the users lots of delays ... Thanks, Jean-François Doyon Internet Service Development and Systems Support GeoAccess Division Canadian Center for Remote Sensing Natural Resources Canada http://atlas.gc.ca Phone: (613) 992-4902 Fax: (613) 947-2410

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Tracker and Scheduled tasks
by Oliver Pabst 07 May '02

07 May '02

Hi Zope folks, as I saw in the Tracker source, it should be possible to trigger the execute_rules method to tell the Tracker to resend old Tracker issues to the supporters to alert them. Does someone know who you can trigger this with a cron job or so? -- --- --- Oliver Pabst .-------------------------. mailto:olpa@sybcom.de : : phone :+49 681 56600600 : project department : SYBCOM GmbH fax :+49 681 56600660 : : http://www.sybcom.de

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Zope KeyError from nowhere
by Terry Hancock 07 May '02

07 May '02

Hi all, I ran into a major "Huh?" today in the middle of working with my development prototype in Zope. I was doing a lot of edit/test cycles in a Zope subfolder, as I have been doing for the last few months. I also periodically pack the database (though it's been a few days since I did). I don't spend a lot of time at the "Root Folder" though I generally pass through it at least once a day, and did this morning. Anyway, I happened to go back into it and got a weird error: Error Type: KeyError Error Value: Folder (traceback at end of message) (there is no object in the Root Folder named "Folder" as far as I can remember). This is displayed in the Root Folder object display window, whenever I go to the top level of the management interface. Now, this won't go away -- I tried reloading the page, restarting the Zope server from the control panel and by using start/stop scripts, etc. The fsrecover.py script says there's nothing to recover, and tranalyzer doesn't seem to show anything out of the ordinary -- the last few edits are to objects far down the tree that I was working on (and I have no trouble viewing those folders). Nevertheless the error/traceback just won't go away. Is it a bug? I'm not sure how to troubleshoot this. I guess the next step is to pick through the Zope source files mentioned in the traceback, but I thought I'd ask if anyone could recognize what happened. Any ideas much appreciated! Terry Full traceback: Traceback (innermost last): File /usr/local/narya/z2.4.3/lib/python/ZPublisher/Publish.py, line 223, in publish_module File /usr/local/narya/z2.4.3/lib/python/ZPublisher/Publish.py, line 187, in publish File /usr/local/narya/z2.4.3/lib/python/Zope/__init__.py, line 226, in zpublisher_exception_hook (Object: Zope) File /usr/local/narya/z2.4.3/lib/python/ZPublisher/Publish.py, line 171, in publish File /usr/local/narya/z2.4.3/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: manage_main) File /usr/local/narya/z2.4.3/lib/python/ZPublisher/Publish.py, line 112, in call_object (Object: manage_main) File /usr/local/narya/z2.4.3/lib/python/Shared/DC/Scripts/Bindings.py, line 324, in __call__ (Object: manage_main) File /usr/local/narya/z2.4.3/lib/python/Shared/DC/Scripts/Bindings.py, line 354, in _bindAndExec (Object: manage_main) File /usr/local/narya/z2.4.3/lib/python/App/special_dtml.py, line 244, in _exec (Object: manage_main) File /usr/local/narya/z2.4.3/lib/python/DocumentTemplate/DT_In.py, line 711, in renderwob (Object: objectItems) File /usr/local/narya/z2.4.3/lib/python/DocumentTemplate/DT_In.py, line 839, in sort_sequence (Object: objectItems) File /usr/local/narya/z2.4.3/lib/python/ZODB/Connection.py, line 544, in setstate File /usr/local/narya/z2.4.3/lib/python/ZODB/Connection.py, line 227, in _persistent_load (Info: Folder) File /usr/local/narya/z2.4.3/lib/python/ZODB/Connection.py, line 160, in __getitem__ (Info: Folder) File /usr/local/narya/z2.4.3/lib/python/ZODB/FileStorage.py, line 588, in load (Object: /usr/local/narya/zope/var/Data.fs) File /usr/local/narya/z2.4.3/lib/python/ZODB/FileStorage.py, line 564, in _load (Object: /usr/local/narya/zope/var/Data.fs) KeyError: (see above) -- ------------------------------------------------------ Terry Hancock hancock(a)anansispaceworks.com Anansi Spaceworks http://www.anansispaceworks.com ------------------------------------------------------

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ObjectManager 'Contents' problem
by John Hunter 07 May '02

07 May '02

I am working on two demo classes in a Product, a Person and an Address. Both are derived from SimpleItem, and Person is also derived from ObjectManager, because I want it to be able to contain an Address in a Person. Here is my problem: When I add an Address instance to a Folder, all works as expected, so I think the Address constructor and class are ok. When I add an Address instance to an instance of my Person, zope accepts it fine (no errors) but the instance does not show up in the Contents view, which displays the message 'There are currently no items in me' where 'me' is the id of the Person instance . If I try to add another address with the same id, I get an error saying the id is already in use. But I cannot see the Address instance, even if I call a method like <dtml-in "PARENTS[0].objectValues()"> <h3><dtml-var id>:</h3> </dtml-in> on the person instance. I would appreciate any advice. I don't give a whit about persons or addresses, but plan to use this code as a template for my actual development, so I'm also happy to hear any criticism of the code below. I am using the Component/Interface design suggested in the Zope Dev Guide, and have based on lot of the code on maxm's HOWTOs and mxm classes Thanks, John Hunter ######### Person.py -- the person interface ################## from Interface import Base class Person(Base): "A person is a person, no matter how small" def getFullName(self): "Return full name" ######### PersonImplemetation.py ################## from Person import Person import Products from AccessControl import ClassSecurityInfo from Globals import DTMLFile, InitializeClass from OFS.SimpleItem import SimpleItem from OFS.PropertyManager import PropertyManager from OFS.ObjectManager import ObjectManager class PersonImplementation(SimpleItem, PropertyManager, ObjectManager): """ Person product class, implements Person interface. """ __implements__=Person meta_type='Person' security=ClassSecurityInfo() _properties=({'id':'first', 'type': 'string', 'mode': 'w'}, {'id':'last', 'type': 'string', 'mode': 'w'}, ) _allowed_meta_types = ('Address', ) manage_options = ( (ObjectManager.manage_options[0],)+ PropertyManager.manage_options + SimpleItem.manage_options + ( { 'label' : 'View', 'action' : 'index_html', }, ) ) security.declarePublic('index_html') #security.declareProtected('View management screens', 'index_html') index_html=DTMLFile('www/person/index_html', globals()) def __init__(self, id, first, last): self.id=id self.first = first self.last = last security.declarePublic('getFullName') def getFullName(self): "Return full name" return '%s %s' % (self.first, self.last) def all_meta_types(self): """ Returns what meta_types can be added to the objectmanager """ if hasattr(self, '_allowed_meta_types'): result = [] for metaType in Products.meta_types: if metaType['name'] in self._allowed_meta_types: result.append(metaType) return result else: return Products.meta_types def addPersonForm(dispatcher): """ Returns an HTML form. """ return """<html> <head><title>Add Person</title></head> <body> <form action="addPersonFunction"> id <input type="type" name="id"><br> first <input type="type" name="first"><br> last <input type="type" name="last"><br> <input type="submit" value="Add"> </form> </body> </html>""" def addPersonFunction(dispatcher, id, first, last, REQUEST=None): """ Create a new person and add it to myself """ n=PersonImplementation(id, first, last) dispatcher.Destination()._setObject(id, n) if REQUEST is not None: return dispatcher.manage_main(dispatcher, REQUEST) InitializeClass(PersonImplementation) ######### Address.py -- the interface ################## from Interface import Base class Address(Base): "Where to find me" def getAddress(self): "Return full address" ######### AddressImplemetation.py ################## from Address import Address from AccessControl import ClassSecurityInfo from Globals import DTMLFile, InitializeClass from OFS.SimpleItem import SimpleItem from OFS.PropertyManager import PropertyManager class AddressImplementation(SimpleItem, PropertyManager): """ Address product class, implements Address interface. """ __implements__=Address meta_type='Address' security=ClassSecurityInfo() _properties=({'id':'street', 'type': 'string', 'mode': 'w'}, {'id':'city', 'type': 'string', 'mode': 'w'}, {'id':'state', 'type': 'string', 'mode': 'w'}, {'id':'zip', 'type': 'string', 'mode': 'w'}, ) manage_options = \ PropertyManager.manage_options + \ SimpleItem.manage_options + \ ( { 'label' : 'View', 'action' : 'index_html', }, ) security.declarePublic('index_html') #security.declareProtected('View management screens', 'index_html') index_html=DTMLFile('www/address/index_html', globals()) def __init__(self, id, street, city, state, zip): self.id=id self.street = street self.city = city self.state = state self.zip = zip security.declarePublic('getAddress') def getAddress(self): "Return full address" return '%s\n%s, %s %s' % (self.street, self.city, self.state, self.zip) def addAddressForm(dispatcher): """ Returns an HTML form. """ return """<html> <head><title>Add Address</title></head> <body> <form action="addAddressFunction"> id <input type="type" name="id"><br> street <input type="type" name="street"><br> city <input type="type" name="city"><br> state <input type="type" name="state"><br> zip <input type="type" name="zip"><br> <input type="submit" value="Add"> </form> </body> </html>""" def addAddressFunction(dispatcher, id, street, city, state, zip, REQUEST=None): """ Create a new address and add it to myself """ n=AddressImplementation(id, street, city, state, zip) dispatcher.Destination()._setObject(id, n) if REQUEST is not None: return dispatcher.manage_main(dispatcher, REQUEST) InitializeClass(AddressImplementation) ############### Product __init__.py ##################### from PersonImplementation import PersonImplementation, addPersonForm, addPersonFunction from AddressImplementation import AddressImplementation, addAddressForm, addAddressFunction def initialize(registrar): registrar.registerClass( PersonImplementation, constructors = (addPersonForm, addPersonFunction), icon="www/images/User_icon.gif", ) registrar.registerClass( AddressImplementation, constructors = (addAddressForm, addAddressFunction), )

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