January 2001 - Zope-Dev

Calling HTMLFiles
by morten＠esol.no 18 Jan '01

18 Jan '01

Hi, I'm having difficulties calling an HTML file from python.. Here's the code: [...] from events import conflicting_events calendar_event_add_redirect = HTMLFile('calendar_event_add_redirect', globals()) manage_add_calendar_event_form = HTMLFile('calendar_event_add', globals()) conflicting_events_dialogue = HTMLFile('calendar_event_conflicting_events_dialogue', globals()) # These two expand into seconds expand_hour = lambda x: x * 60 * 60 expand_minute = lambda x: x * 60 def manage_add_calendar_event(self, title='', note='', alarm=0, start=0, end=0, priority=0, status=0, REQUEST=None, RESPONSE=None): "Add an instance of the calendar_event class." new_id = str(self.get_unique_id()) if REQUEST: alarm = expand_hour(REQUEST['alarm_hour']) + \ expand_minute(REQUEST['alarm_minute']) start = expand_hour(REQUEST['start_hour']) + \ expand_minute(REQUEST['start_minute']) end = expand_hour(REQUEST['end_hour']) + \ expand_minute(REQUEST['end_minute']) title = REQUEST['title'] note = REQUEST['note'] priority = REQUEST['priority'] status = REQUEST['status'] conflicting_events_ = self.check_timespan( self.getParentNode().getParentNode().id, self.getParentNode().id, self.id, start, end) if conflicting_events_: return conflicting_events_dialogue(self, REQUEST) [...] Now, if there are any conflicting events, the HTMLFile is returned, with some parameters passed along. What I'm wondering about is how can I pass the variables defined in the REQUEST so that they can be looked up with dtml-code in the conflicting_events_dialogue? And doing it without raising KeyErrors on DTMLMethod that are called from within the conflicting_events_dialogue? Thanks. -Morten

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passing vars to queries
by frits rincker 18 Jan '01

18 Jan '01

Hi, I want to use data from a query in a query, but I find no way to pass the variables to the inner query. An example: <dtml-in query1> Now I have <dtml-var q1var> and I want to call query2 using this var <dtml-call query2> (here q1var is used to insert, or select in a zsql query) <dtml-in query2> <dtml-var q2var> </dtml-in> </dtml-in> This doesn't work.. What does ? Mr. Groping (in the dark..)

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Implementing a URL path resolver
by morten＠esol.no 18 Jan '01

18 Jan '01

Hi guys, I've been tinkling with a function that does what REQUEST.resolve_url does, except without it relying on having a REQUEST instance available. That is, just resolving the path itself, something like this: path ÿstring.split(relative_url, '/') path ÿfilter(None, path) new_path ÿ'%s' % path[0] path ÿpath[1:] for element in path: new_path ÿnew_path + "['%s']" % element return eval("self%s" % new_path) Now, neither []- or .-like evaluation of the path works.. Any ideas? Cheers, Morten

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mounting obj to more than one zodb location
by ender 18 Jan '01

18 Jan '01

whats happens when you create a persistent object and mount it to multiple points on your zodb. do you get a shared ref or multiple copies of the object? kapil

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HTTPRequest change to allow images as submit methods
by richard＠bizarsoftware.com.au 18 Jan '01

18 Jan '01

Zope's got this really cool form handling mechanism that allows us to have mutiple submission buttons that call different methods. Way neat. Now, I'd really like to have the same mechanism available when using images as submission buttons (that is, <input type="image" name="goMethod:method">) This breaks, of course, because goMethod:method gets turned into goMethod:method.x and goMethod:method.y. My proposal is to patch HTTPRequest.processInputs so that the search_type RE is as follows: ':$[a-zA-Z][a-zA-Z0-9_]+\|\.[xy]$$' processInputs already loops through the name to find all :foo entries, and the .x / .y results are just ignored by the code. The HTML FORM source needs to be changed to include the extra ':' required to make this work: <input type="image" name="goMethod:method:"> ^ It works fine for me in practice. I believe this will also benefit anyone who wants other typed information from imagemap submissions (integer or float values, for example). Richard -- Richard Jones richard(a)bizarsoftware.com.au Senior Software Developer, Bizar Software (www.bizarsoftware.com.au)

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recent DynPersist.dll for windows
by Steve Alexander 17 Jan '01

17 Jan '01

Hi Folks, Does anyone have a recently compiled DynPersist.dll from ZPatterns, compiled for Windows ? Thanks. -- Steve Alexander Software Engineer Cat-Box limited http://www.cat-box.net

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RE: [Zope-dev] ZCatalog with ZClass
by Lily Li 17 Jan '01

17 Jan '01

Hi, I tried it with a new product following the HowTo, and it works perfectly. Thanks a lot. But actually I have already an exsisted product with a Container ZClass 'KTracker'(inherit from ObjectManager) and an Item ZClass called 'TrackerIssue'. And it's been used for a while with the instance 'tracker' and hundreds of issues inside. Now I've succeeded in changing the base class for 'KTracker'to subclass ObjectManager and ZCatalog, and changing 'TrackerIssue' to CatalogAware. As 'tracker' instance was created before, although the base class is changed now, the constructor of the new base class seems not running. So I created an External Method to run the constructor of ZCatalog as follows: from Products.ZCatalog.ZCatalog import ZCatalog def initContainer(self): ZCatalog.__init__(self, self.id) Then I ran this method through IE browser: http://hostname/.../tracker/initContainer. It seems working, as a Vocabulary folder is created. And I could make settings to index and so on. But there's one thing incorrect: When using manage_catalogFind to catalog the object of type 'TrackerIssue', nothing was returned. If changing the finding type to 'All types', all the 'TrackerIssue' objects and other types of objects are cataloged together. The auto-catalogAware works fine for 'TrackerIssue' objects though. Do you have any idea why this happens? Does it have anything to do with the order of base class, etc.? If just the manage_catalogFind doesn't work well, will it affect the searching stuff much, if CatalogAware works fine? Thanks a lot. Lily -----Original Message----- From: Michael Bernstein [mailto:webmaven@lvcm.com] Sent: Wednesday, January 17, 2001 12:11 AM To: Lily Li Cc: 'zope-dev(a)zope.org' Subject: Re: [Zope-dev] ZCatalog with ZClass Lily Li wrote: > > Hello, everyone, > > It seems that many of you have used ZCatalog pretty well. > > My problem is that I'd like a ZClass (of a Product) to subclass > CatalogAware, and implement all the index and search inside the Product. > That means I don't want to do any DTML method stuff outside of the Product. What you probably want is to create a repository that subclasses ZCatalog as is described in this HowTo: http://www.zope.org/Members/tseaver/inherit_ZCatalog And then add your CatalogAware ZClasses into it. Then you can set up your ZCatalog/ObjectManager with search methods. HTH, Michael Bernstein.

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Massive scalability
by Michael Bernstein 17 Jan '01

17 Jan '01

I am currently planning two separate 'Archive' type projects/Products. In both cases, I need to make sure that my implementation will scale to hundreds of thousands or even millions of objects. In one project the objects are very simple ZClasses with a few attributes, in the other project, the objects will be instances of the Photo Product, and considerably larger. One implementation I'm considering is a simple Specialist with a Rack. Does anyone know if there are any inherent limitations on the number of objects that can be stored in a Rack? are there any performance limitations at the scale that I'm talking about? The other implementation I'm considering is to create a ZClass that inherits from ZCatalog and Btree Folder. Would this approach run into any scalability problems with the number and type of objects I'm talking about? Thanks, Michael Bernstein.

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Rowcount not available?
by Tim McLaughlin 17 Jan '01

17 Jan '01

Is there a reason the rowcount property of the cursor object was not made available throught the DA (ideally as an optional parameter of the __call__ method)? Am I missing it somewhere else? Cheers, Tim McLaughlin

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manage_changeProperties in a loop
by Arno Gross 17 Jan '01

17 Jan '01

Suppose I have a list of existing folder objects and depending on their index in the list I want to set a property called 'rang'. I assumed you could something like this: <dtml-call "REQUEST.set('rangList','folder1;folder2;folder2')"> (normally the list comes from outside) <dtml-in " _.string.split(rangList,';')"> <dtml-with "_.getitem('sequence-item')"> <dtml-let index=sequence-index> <dtml-call "manage_changeProperties({'rang':index})"> </dtml-let> </dtml-with> </dtml-in> Any ideas or hints? Thanks Arno Gross, email: arno.gross(a)consotec.de

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