September 2000 - Zope-Dev

date formatting / extracting substrings
by Jeff Nielsen / Ugo Fast 07 Sep '00

07 Sep '00

Hello out there in Zope world! Again, I'm completely baffled by Zope and the docs are no help either. I'm trying to take an input of a date in the form YYYYMM as the variable MonthID and create a string in the form Month, YYYY as a variable named MonthName. For instance, a MonthID of 200009 should return a MonthName of "September, 2000". I've been looking in the docs and the emails, but I can't figure out how to extract substrings. I think something like this should work to seperate the month value from the MonthID, but it doesn't: <dtml-call "REQUEST.set('MonthValue', _.substring(MonthID,5,2))"> Any guidance would be appreciated. ----------------------- Jeff Nielsen http://www.UgoFast.com/ "Where U Go Fast"

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DCOracleStorage: problems running Full.sql
by Roman Milner 07 Sep '00

07 Sep '00

I'm trying to get DCOracleStorage up and running, but I'm getting errors trying to run Full.sql. I know didly about plsql, so I apalogize if this is obvious. When I run Full.sql I get the following errros. Does this mean my oracle installation is missing something? Thanks, ^Roman ... Table created. Table created. Index created. Commit complete. Package created. No errors. Warning: Package Body created with compilation errors. create package body zodb_methods as * ERROR at line 1: ORA-01041: internal error. hostdef extension doesn't exist No errors. ORA-24323: value not allowed Error accessing package DBMS_APPLICATION_INFO ERROR: ORA-03114: not connected to ORACLE

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RE: [Zope-dev] REPOST: Cut down on the Available Objects list.
by Brian Lloyd 07 Sep '00

07 Sep '00

> Hi, all - someone suggested to me that I should try the zope-dev list > instead of the zope list, here goes. > > When I create ZClasses I can make the Available Objects shrink to just > a couple of available objects via subclasses and so forth. How would > I do this with a Python Class in a Python Zope Product? (Let's say an > OFS.Folder.Folder class, which could normally contain all available > objects.) Erik, In the ObjectManager class (lib/python/OFS/ObjectManager.py), there is a method 'filtered_meta_types', which is called by the DTML that implements the Zope management screens. The job of this method is to filter the list of available objects based on the authorization of the user. An approach that you could use is to override that method in your class so that it only returns the object types that you want. You should probably retain the filtering based on authorization for consistency (you could probably just call the ObjectManager class' method and refilter the result in your overridden version). For ex: class MyFolderishObject(ObjectManager): ... def filtered_meta_types(self, user=None): # overridden version result=[] # get the filtered list from superclass, so things # that the user isn't authorized for are already # filtered out... types=ObjectManager.filtered_meta_types(self, user) # each meta type is a mapping - the name of the # object type is under the key 'name'. We'll filter # out all that start with 'D' as an example. for item in types: if item['name'][0] != 'D': result.append(item) return result Hope this helps! Brian Lloyd brian(a)digicool.com Software Engineer 540.371.6909 Digital Creations www.digicool.com

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REPOST: Cut down on the Available Objects list.
by Erik Enge 07 Sep '00

07 Sep '00

Hi, all - someone suggested to me that I should try the zope-dev list instead of the zope list, here goes. When I create ZClasses I can make the Available Objects shrink to just a couple of available objects via subclasses and so forth. How would I do this with a Python Class in a Python Zope Product? (Let's say an OFS.Folder.Folder class, which could normally contain all available objects.) Thanks :-)

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Re: [Zope-dev] CalendarTag, year mode image
by al028823＠alumail.uji.es 07 Sep '00

07 Sep '00

I've updated the page (http://estce.act.uji.es/calendar.html) following your suggestions, if nobody disagrees I'll release the CalendarTag 0.9.21 with that new look. > > al028823(a)alumail.uji.es (Ibañez Palomar Juan David) writes: > > > Please, look at "http://estce.act.uji.es/calendar.html", there > > are several proposed images. > > > > The only problem I see is when the year mode is selected, since > > there's more white than black it's not clear which mode is > > selected. > > You are right, it's dificult to decide wether an icon is selected or not. > > Of the given proposals, i'd prefer proposal 0, because the other do not > have enough "structure". > > Maybe you could use color, as my Palm does :). > (black on white) changes to (white on blue) on selection. > > jens > > > > > -- > Jens Quade * jq(a)jquade.de * Bonn > >

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Re: [Zope-dev] CalendarTag, year mode image
by al028823＠alumail.uji.es 07 Sep '00

07 Sep '00

Please, look at "http://estce.act.uji.es/calendar.html", there are several proposed images. The only problem I see is when the year mode is selected, since there's more white than black it's not clear which mode is selected. opinions? votes? more suggestions? > > The calendar mode icons on the Palm are based on the visible > structure of the diffent screens (one day, one row of days, > a matrix of days). On the newer palms, there is another view > (current day and TODO items; a single dot above some lines). > > To keep in the same "language", I would use a big, black block > or circle to show "too many days" to view at once. > > > > -- > Jens Quade * jq(a)jquade.de * Bonn > >

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PARENTS
by Chris Withers 07 Sep '00

07 Sep '00

From http://www.zope.org/Members/michel/Projects/Interfaces/PublisherRequest: > Deprecated attributes: > - PARENTS What are we supposed to use instead now? cheers, Chris

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(no subject)
by James Johnson 06 Sep '00

06 Sep '00

Ok I'm going over most of the ZPatterns stuff again. It seems simple enough. Yet I can't seem to put a specialist and a dataskin based ZClass in a product folder and get them to do anything persistently. I've been through all of the tutorials and can't seem to get anything to click. You know things like do I create and call a trigger or the propertysheet. When I create the methods inside the specialist I can't access the DataSkin ZClass. I have it setup as the storage class. Is it alright to post these kinds of questions here? Also on the note of subjects and Gen-spec. It seems most of the stuff for Zope like the PTK and ZODB stuff I see is class based and not whole/part patterns stuff. How about a simple Diagram from those that understand it in Coad OOA terms. I know that there is one already but how about in terms of the very basic objects like a folder, specialist, and Zclass. Thanks, 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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Test(Persistent) failing with AttributeError: __hash__
by John D. Heintz 06 Sep '00

06 Sep '00

In the following code either I am using dictionaries wrong or I'm missing something with ExtensionClass in general. Can someone explain the best way for me to map from one instance to another? I have tried searching Zope and Python mailing lists and resources for an answer to this question but have become confused by different conflicting messages. On the one hand I have heard that dictionary keys are supposed to be immutable. On the other, I've heard that dictionaries are used to simulate (key is object, value is ignored) some aspects of sets. Which is correct? What I really want is to be able to map a Persistent object to a string. Thanks for any help. John Heintz import ZODB from Persistence import Persistent class Test1: pass class Test2(Persistent): pass dict = {} t1 = Test1() t2 = Test2() try: dict[t1] = 1 except: print "Using instance of Test1 as key failed!" try: dict[t2] = 2 except: print "Using instance of Test2(Persistent) as key failed!" -- John D. Heintz DataChannel, Inc. Senior Engineer 512-633-1198 jheintz(a)isogen.com

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Acquisition in a DTML Tag
by Brett Carter 06 Sep '00

06 Sep '00

I've defined my own dtml tag (i.e. <dtml-foo></dtml-foo>) and I am trying to look up an object depending on the arguments passed to my tag. The python class that defines the tag inherits from Acquisition.Implicit, but 'self' doesn't contain any of the Acquisition hiarchy. It seems like this must be possible, since the <dtml-var> tag must have to do an object lookup somewhere for objects passed to it to render. Can anybody shed some light on this? Is it doable? TIA -Brett

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