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Re: [Zope-dev] Converters.field2date, allow empty string to return None?
by Dieter Maurer 04 Sep '00

04 Sep '00

Brad Clements writes: > One thing that has been bothering me is that I can't easily test my > ZSQL Methods if they accept a date type unless I completely fill all the > date arg types. > > For example, if the sqlmethod has argument type > startdate:date='' > > > and in the body I have > <dtml-if startdate> ... > > When i use the test form, I can't leave the date field empty, otherwise I > get a conversion error from Converters.field2date() One solution would be to use a valid (special) date as default value and test against it in the body. > I see that converters required: exists, but does that imply that all other > converters allow an empty string to return None? Or do we need to add > an explicit "optional" type? I think, we should have an explicit "optional" because that is the most clear way to say, this argument is optional. Dieter

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win2000 service problems
by Robin Becker 04 Sep '00

04 Sep '00

I am running Zope and a simple chatlike server on Win2000. I have both set up to use pythonservice.exe. When started and stopped both services seem to behave cleanly, but earlier today when I tried to stop the long run versions both gave segment errors and after a long wait failed to terminate. I tried to terminate from the command line, but was told neither service was running, but I could see them in the task manager. I am using the version of pythonservice + helpers that came with 2.2.0. Anyone else seen this kind of thing? -- Robin Becker

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MailHost, 2.2.0, and qmail mailserver
by Richard Taylor 04 Sep '00

04 Sep '00

The change in the sendmail tag to use the SMTP module has caused a problem for me when sending to a qmail mailserver. After investigation, it would appear that the smtplib module function: SMTP.mail(self,sender,options=[]): appends a space to the end of the FROM: address when there are no options. The offending line is: self.putcmd("mail", "FROM:%s %s" % (quoteaddr(sender) ,optionlist)) This space upsets the qmail server which response with SMTPSenderRefused. A quick fix is to remove this space and home that no optionlist is ever past. A more permanent fix to smtplib would seem in order. Richard

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Re: Re: [Zope-dev] ZPattens Question? Guestbook example
by James Johnson 04 Sep '00

04 Sep '00

I wondered why my post looked so bad. Thanks. I wonder if you are planning on releasing some UML stuff related to ZPatterns and Zope? I use a Freeware product called DOME. It has support for UML and COAD-YOURDON OOA. I'm don't have any formal training so I'm still trying to figure out what it all means. If you have any example diagrams that you can share that would be most kind. Here is the code I was trying to use in the first place. <h2> Inserting new Guest Book Table Info Item!</h2> <dtml-let id="'entry_%d' % len(self.objectIds())"> ni="Guestbook.newItem(id)"> <dtml-call "ni.propertysheets.manage_addPropertySheet (id='GBookProps', ns='')"> nips="ni.propertysheets.get('GBookProps')"> <dtml-call "nips.manage_addProperty('guest_name', guest_name, 'string')"> <dtml-call "nips.manage_changeProperties(REQUEST)"> </dtml-let> >You can use ZPatterns from DTML alone quite easily. However, some >things >are easier from an external method or a python method. I hope it happens soon. Jimbo Get your Free E-mail at http://tacoma.zzn.com ____________________________________________________________ Get your own Web-Based E-mail Service at http://www.zzn.com

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Proposal: local classes
by Jay, Dylan 04 Sep '00

04 Sep '00

I want to be able to have a class I can use in a subtree for things like encapsulating database rows etc. Python and ZClasses seem to be a bit heavy weight for something I don't want to use in other contexts. Is there any reason why ZClasses can't be modified to live in a folder as well as a product?

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ZPattens Question? Guestbook example
by James Johnson 03 Sep '00

03 Sep '00

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<base href="..."> not being set under some circumstances
by Steve Alexander 03 Sep '00

03 Sep '00

Zope 2.2.1 Zope is not setting the <base> tag in the html header under some circumstances. To get a reproducable example of this, create a folder "test" under the zope root object. Inside "test" create a new dtml document called "body_html". Leave the content of body_html as the default. Now, view the page, and view its source. You'll see no <base> element. Is this intentional? Does Zope now not bother with the body element if it doesn't think it is needed? This would seem to be the rationale behind the request attribute "request._hacked_path". Comments? -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net

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ZPatterns transactions bug
by Steve Alexander 03 Sep '00

03 Sep '00

Here's a trace of all the transaction calls to do with a particular customizer. I have instrumented ZPatterns.Transactions.Transactional like this: def _register(self): if self.id=='customize_items': print "\n -- REGISTER %s" % self._v_registered if self._v_registered: return get_transaction().register(Reporter(self)) self._v_registered = 1 def _unregister(self): try: del self._v_registered if self.id=='customize_items': print "\n_unregister: NORMAL OPERATION" # import traceback # traceback.print_stack() except: print "\n\n_unregister: ERROR----" # import traceback # traceback.print_stack() ZPatterns.Transactions.Reporter in most of the methods. Specifically: def tpc_begin(self, transaction, subtransaction=None): if self.client.id=='customize_items': print '\n -- TPC begin %s sub=%s' % (self, subtransaction) self.tpc_entered = 1 Also: ZCatalog.py def catalog_object(self, obj, uid): """ wrapper around catalog """ self._v_total = (self._v_total + self._catalog.catalogObject(obj, uid, self.threshold)) if self.threshold is not None: if self._v_total > self.threshold: print ' -- ZCatalog commit subtransaction start' # commit a subtransaction get_transaction().commit(1) # kick the chache, this may be overkill but ya never know self._p_jar.cacheFullSweep(1) self._v_total = 0 print ' -- ZCatalog commit subtransaction complete' The trace starts when I try to update a ZCatalog containing lots of DataSkin-derived instances. -------- -- REGISTER 0 ... lots of REGISTER 1 -- REGISTER 1 -- ZCatalog commit subtransaction start -- TPC begin <Products.ZPatterns.Transactions.Reporter instance at 89600f8> sub=1 -- TPC commit <Products.ZPatterns.Transactions.Reporter instance at 89600f8> -- TPC finish <Products.ZPatterns.Transactions.Reporter instance at 89600f8> -- TPC end tran <Products.ZPatterns.Transactions.Reporter instance at 89600f8> _unregister: NORMAL OPERATION -- ZCatalog commit subtransaction complete -- REGISTER None -- REGISTER 1 -- TPC begin <Products.ZPatterns.Transactions.Reporter instance at 89f98b8> sub=1 -- TPC commit <Products.ZPatterns.Transactions.Reporter instance at 89f98b8> -- TPC finish <Products.ZPatterns.Transactions.Reporter instance at 89f98b8> -- TPC end tran <Products.ZPatterns.Transactions.Reporter instance at 89f98b8> _unregister: NORMAL OPERATION -- TPC commit_sub <Products.ZPatterns.Transactions.Reporter instance at 89600f8> -- TPC begin <Products.ZPatterns.Transactions.Reporter instance at 89600f8> sub=None -- TPC commit_sub <Products.ZPatterns.Transactions.Reporter instance at 89f98b8> -- TPC begin <Products.ZPatterns.Transactions.Reporter instance at 89f98b8> sub=None _unregister: ERROR, can't del self._v_registered -------- I don't know enough about ZODB transactions, and the intent of ZPatterns.Transactions to do anything more at present. I did note in ZODB/Transaction.py this comment. Perhaps it is relevant? # - For every jar for which we've called tpc_begin on, # we either call tpc_abort or tpc_finish. It is OK # to call these multiple times, as the storage is # required to ignore these calls if tpc_begin has not # been called. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net

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ZPatterns: transaction bug
by Steve Alexander 03 Sep '00

03 Sep '00

**Darn**; I pressed the send button on my mail client by accident while still working on this one. Ignore the last message. I think the error is to do with the way that ZPatterns.Transactions.Reporter doesn't do anything special for subtransactions. On committing a subtransaction, it commits the top-level transaction that it knows about. Then again, I'm new to the way ZODB handles transactions, so I might well be wrong here. More later... -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net

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(no subject)
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03 Sep '00

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