March 2009 - Zope - Zope lists

Question about InvariantsValidator on a GroupForm (z3c.form)
by Oliver Roch 18 Mar '09

18 Mar '09

Hi all, i'm having a problem getting an InvariantsValidator working on a grouped form using z3c.form. Imagine the following setup: class GroupOne(Group): fields = Fields(IMyForm).select('second_attribute', 'third_attribute') class GroupTwo(Group): fields = Fields(IMyForm).select('fourth_attribute', 'fifth_attribute') class MyForm(GroupForm, Form): fields = Fields(IMyForm).select('first_attribute') groups = (GroupOne, GroupTwo) Now, the z3c.form.validator.Data object passed to my InvariantsValidator only contains the 'first_attribute'. I think this is caused by line 190 in field.py: def validate(self, data): fields = self.form.fields.values() Why is this method only looking for form.fields and not aggregating form.fields and possible form.groups? Is it an unsupported use case, or am i just not getting it? Thanks, Oliver

1 0

read-only-database
by Ulla Theiss 17 Mar '09

17 Mar '09

Hello list, I want to run the database in read-only mode from CD and configured it accordingly in the zope.conf: read-only-database on enable-product-installation off zserver-read-only-mode on Starting Zope, I get the following error: Traceback (most recent call last): File "\Programme\Zope\lib\python\Zope2\Startup\run.py", line 56, in ? run() File "\Programme\Zope\lib\python\Zope2\Startup\run.py", line 21, in run starter.prepare() File "E:\Programme\Zope\lib\python\Zope2\Startup\__init__.py", line 98, in pre pare self.startZope() File "E:\Programme\Zope\lib\python\Zope2\Startup\__init__.py", line 257, in st artZope Zope2.startup() File "E:\Programme\Zope\lib\python\Zope2\Startup\__init__.py", line 47, in sta rtup starter.setConfiguration(cfg) File "D:\Programme\Zope\lib\python\Zope2\App\startup.py", line 56, in startup File "D:\Programme\Zope\lib\python\DBTab\DBTab.py", line 96, in getDatabase File "D:\Programme\Zope\lib\python\DBTab\DBTab.py", line 113, in _createDataba se File "E:\Programme\Zope\lib\python\Zope2\Startup\datatypes.py", line 163, in o pen DB = self.createDB() File "E:\Programme\Zope\lib\python\Zope2\Startup\datatypes.py", line 160, in c reateDB return ZODBDatabase.open(self) File "D:\Programme\Zope\lib\python\ZODB\config.py", line 97, in open File "D:\Programme\Zope\lib\python\ZODB\config.py", line 133, in open File "D:\Programme\Zope\lib\python\ZODB\FileStorage\FileStorage.py", line 112, in __init__ File "D:\Programme\Zope\lib\python\ZODB\lock_file.py", line 57, in __init__ IOError: [Errno 13] Permission denied: '\\Zope-Instance/var/Data.fs.lock' r+ means opening the file for updating. This has not to do anything with read-only. Does anybody know what I have to configure additionaly, that read-only works? I run Zope 2.8.4 on windows. Many thanks in advance, Ulla.

4 6

Zope and SSL
by Catherine E. Reinehr 16 Mar '09

16 Mar '09

Hello, I'm trying to find out how to generate a CSR, and I can't find the information I need. All my research covers Zope and Apache or Zope and Linux, etc., but our server is running ONLY Zope. Version 2.6.2, to be exact. Unfortunately, I know next to nothing about setting up a secure server anyway. Any help you can offer would be much appreciated! Thanks, Cat ----- Catherine E. Reinehr Webmaster & Director of Publications Huntingdon College 1500 E. Fairview Ave. Montgomery, AL 36106 (334) 833-4429 / Flowers 218B

4 3

calling javascript method from dtml method
by Dvir Bar-lev 16 Mar '09

16 Mar '09

Hi Is there any way to call a javascript method from a dtml method somewhere in the body of it? The method cam be in a different js file which is preferable or in the dtml method if there is no other way, from what I found on the web it looks like I can't but I want to make sure that I didn't miss anything

3 2

CookieCrumbler question
by Dvir Bar-lev 12 Mar '09

12 Mar '09

Hi I used the CookieCrumbler plugin the make a log in. I added the CookeCrumbler(standalone> from the ZMI , and now I have a log in form that acts oka but I want logout the user, so what I did was call the logout function of cookiecrumbler like this: <dtml-call expr="logout()"> And that does bring me to the logged_out dtml but if I push the back button and return to the logged_in and press the refresh button I still get the result as if the user is till logged in. Do I have to do anything else besides calling the logout function to make sure that the user is now back ti anonymus status?

2 4

Order of method calls of ZopePageTemplate
by Analog Kid 12 Mar '09

12 Mar '09

Hi All: I need to know the order of method calls inside ZopePageTemplate.py whenever a form from the PT is submitted or even when the PT is rendered. Can anyone shed some light on this please? TIA, AK

4 10

redirect timeout doesn't work
by Dvir Bar-lev 12 Mar '09

12 Mar '09

Hi I want to redirect a user from my page to another page after a certain time, I put this code in the dtml page at the top I want to redirect from: <dtml-call "REQUEST.RESPONSE.setHeader('Refresh', '5', 'URL Address')"> But although it does refresh after the timeout it stays in the same page instead of going to the address listed in URLAddress. Anyone knows what I did wrong? Or I even did it the right way?

4 6

session data object question
by Dvir Bar-lev 11 Mar '09

11 Mar '09

Hi I was wondering if there is a way to connect the creation of a session object to a button push. I'll explain in more detail: I have a log in from called login_form, and I have a dtml method called looged_in that is called when we push the submit button in the log in form. What I did is the following, in the log_in_form I get a session data object only if it exsists and I check how much time passed and act accordingly, in the looged_in method I create the data session oblject ans set the start time. Unfortuantly that is not good for me because if a user refreshes the page it resets the time in the session object, I was wondering if there is a way for me to know if I can reset the session data time only when the user clicks the submit button and not as a result of a refresh call. I tried looking on the web and in the zope book but I couldn't find anything.

3 7

Can't start Zope
by Ken Winter 10 Mar '09

10 Mar '09

I have done something to my Zope instance that has prevented Zope from starting (after many years of working fine). Can you help me find a way out? Here's the command and the results: dhatoffice@05 /usr/local/zope/instance3/bin # ./zopectl start /usr/local/zope/298/lib/python/persistent/__init__.py:19: RuntimeWarning: Python C API version mismatch for module cPersistence: This Python has API version 1013, module cPersistence has version 1012. from cPersistence import Persistent, GHOST, UPTODATE, CHANGED, STICKY /usr/local/zope/298/lib/python/persistent/__init__.py:19: RuntimeWarning: Python C API version mismatch for module TimeStamp: This Python has API version 1013, module TimeStamp has version 1012. from cPersistence import Persistent, GHOST, UPTODATE, CHANGED, STICKY /usr/local/zope/298/lib/python/persistent/__init__.py:20: RuntimeWarning: Python C API version mismatch for module cPickleCache: This Python has API version 1013, module cPickleCache has version 1012. from cPickleCache import PickleCache /usr/local/zope/298/lib/python/zope/interface/interface.py:156: RuntimeWarning: Python C API version mismatch for module _zope_interface_coptimizations: This Python has API version 1013, module _zope_interface_coptimizations has version 1012. from _zope_interface_coptimizations import SpecificationBase /usr/local/zope/298/lib/python/ExtensionClass/__init__.py:105: RuntimeWarning: Python C API version mismatch for module _ExtensionClass: This Python has API version 1013, module _ExtensionClass has version 1012. from _ExtensionClass import * /usr/local/zope/298/lib/python/AccessControl/ImplC.py:18: RuntimeWarning: Python C API version mismatch for module cAccessControl: This Python has API version 1013, module cAccessControl has version 1012. from cAccessControl import rolesForPermissionOn, \ /usr/local/zope/298/lib/python/Acquisition/__init__.py:3: RuntimeWarning: Python C API version mismatch for module _Acquisition: This Python has API version 1013, module _Acquisition has version 1012. from _Acquisition import * /usr/local/zope/298/lib/python/Record/__init__.py:59: RuntimeWarning: Python C API version mismatch for module _Record: This Python has API version 1013, module _Record has version 1012. from _Record import Record Traceback (most recent call last): File "/usr/local/zope/298/lib/python/Zope2/Startup/zopectl.py", line 329, in <module> main() File "/usr/local/zope/298/lib/python/Zope2/Startup/zopectl.py", line 287, in main options.realize(args) File "/usr/local/zope/298/lib/python/Zope2/Startup/zopectl.py", line 95, in realize ZDOptions.realize(self, *args, **kw) File "/usr/local/zope/298/lib/python/zdaemon/zdoptions.py", line 273, in realize self.load_schema() File "/usr/local/zope/298/lib/python/zdaemon/zdoptions.py", line 321, in load_schema self.schema = ZConfig.loadSchema(self.schemafile) File "/usr/local/zope/298/lib/python/ZConfig/loader.py", line 31, in loadSchema return SchemaLoader().loadURL(url) File "/usr/local/zope/298/lib/python/ZConfig/loader.py", line 65, in loadURL return self.loadResource(r) File "/usr/local/zope/298/lib/python/ZConfig/loader.py", line 159, in loadResource schema = ZConfig.schema.parseResource(resource, self) File "/usr/local/zope/298/lib/python/ZConfig/schema.py", line 27, in parseResource xml.sax.parse(resource.file, parser) File "/usr/local/lib/python2.5/xml/sax/__init__.py", line 33, in parse parser.parse(source) File "/usr/local/lib/python2.5/xml/sax/expatreader.py", line 107, in parse xmlreader.IncrementalParser.parse(self, source) File "/usr/local/lib/python2.5/xml/sax/xmlreader.py", line 123, in parse self.feed(buffer) File "/usr/local/lib/python2.5/xml/sax/expatreader.py", line 207, in feed self._parser.Parse(data, isFinal) File "/usr/local/lib/python2.5/xml/sax/expatreader.py", line 301, in start_element self._cont_handler.startElement(name, AttributesImpl(attrs)) File "/usr/local/zope/298/lib/python/ZConfig/schema.py", line 99, in startElement getattr(self, "start_" + name)(attrs) File "/usr/local/zope/298/lib/python/ZConfig/schema.py", line 475, in start_schema keytype, valuetype, datatype = self.get_sect_typeinfo(attrs) File "/usr/local/zope/298/lib/python/ZConfig/schema.py", line 201, in get_sect_typeinfo datatype = self.get_datatype(attrs, "datatype", "null", base) File "/usr/local/zope/298/lib/python/ZConfig/schema.py", line 194, in get_datatype return self._registry.get(dtname) File "/usr/local/zope/298/lib/python/ZConfig/datatypes.py", line 398, in get t = self.search(name) File "/usr/local/zope/298/lib/python/ZConfig/datatypes.py", line 423, in search package = __import__(n, g, g, component) File "/usr/local/zope/298/lib/python/Zope2/Startup/datatypes.py", line 21, in <module> import OFS.Uninstalled File "/usr/local/zope/298/lib/python/OFS/Uninstalled.py", line 20, in <module> import SimpleItem, Globals, Acquisition File "/usr/local/zope/298/lib/python/OFS/SimpleItem.py", line 26, in <module> import AccessControl.Role, AccessControl.Owned, App.Common File "/usr/local/zope/298/lib/python/AccessControl/__init__.py", line 17, in <module> from Implementation import setImplementation File "/usr/local/zope/298/lib/python/AccessControl/Implementation.py", line 98, in <module> setImplementation("C") File "/usr/local/zope/298/lib/python/AccessControl/Implementation.py", line 51, in setImplementation from AccessControl import ImplC as impl File "/usr/local/zope/298/lib/python/AccessControl/ImplC.py", line 18, in <module> from cAccessControl import rolesForPermissionOn, \ File "/usr/local/zope/298/lib/python/AccessControl/SimpleObjectPolicies.py", line 82, in <module> from DocumentTemplate.DT_Util import TemplateDict File "/usr/local/zope/298/lib/python/DocumentTemplate/__init__.py", line 21, in <module> from DocumentTemplate import String, File, HTML, HTMLDefault, HTMLFile File "/usr/local/zope/298/lib/python/DocumentTemplate/DocumentTemplate.py", line 112, in <module> from DT_String import String, File File "/usr/local/zope/298/lib/python/DocumentTemplate/DT_String.py", line 19, in <module> from DT_Util import ParseError, InstanceDict, TemplateDict, render_blocks, str File "/usr/local/zope/298/lib/python/DocumentTemplate/DT_Util.py", line 19, in <module> from html_quote import html_quote, ustr # for import by other modules, dont remove! File "/usr/local/zope/298/lib/python/DocumentTemplate/html_quote.py", line 4, in <module> from ustr import ustr File "/usr/local/zope/298/lib/python/DocumentTemplate/ustr.py", line 18, in <module> nasty_exception_str = Exception.__str__.im_func AttributeError: 'wrapper_descriptor' object has no attribute 'im_func' If anyone thinks it will help, I'll try to explain what I did that apparently caused the problem. ~ TIA ~ Ken

2 1

Avoiding page redirects from TAL
by Analog Kid 10 Mar '09

10 Mar '09

Hi All: I have a customized page template product which subclasses from ZopePageTemplate. In this product class, I have a method that redirects to a certain fixed page that I have created in the ZMI. One of the objects of this type makes calls to this method and also has some conditional redirects (based on certain request variables). Here is a representation In my Product class, I have a method which conditionally redirects ... def check_and_redirect(self): request = self.REQUEST if request.get('redirect_to_fixed_page', False): request.RESPONSE.redirect('http://somefixedurl_in_my_domain') def getValue(self): self.check_and_redirect() # do some more stuff .... .... return 'some value' My ZPT looks like this ... ... <tal:call tal:define="data python:mytemplate.getValue()"/> ... ... ... ... <tal:redir tal:condition="python:here.REQUEST.has_key('var')"> <tal:dummy tal:define="test python:here.REQUEST.RESPONSE.redirect(' http://someotherurl")"/> </tal:redir> ... ... ... What is happeninig is that the redirect in the PT is taking precedence over my redirect (which Im doing in the method). My question is: Can I make sure that my redirect takes precedence without modifying the PT itself. Is there any other ZopePageTemplate method which I can patch so that my own redirect kicks in first?? Thanks for you time and help. -AK

2 4