- Zope-Dev - Zope lists

Asking for the type of a variable
by David S. Harrison 10 Nov '99

10 Nov '99

It looks like I need to ask for the type of a python variable from DTML. So far, I haven't been able to get this to work: <dtml-if "type(TAG)==type('x')"> I am trying to see if the TAG variable is a string. Zope complains about "type". I tried using the special name space: <dtml-if "_.type(TAG)==_.type('x')"> But it looks like "type" is not a function available through that means. Is there another way to use the type of a variable for branching? Actually, the reason this arises is forms. I have a series of radio buttons in a form. When submitted to Zope, I notice that if one item is selected, the value is a string. When many items are selected, the value is a list of strings. Since <dtml-in> does not accept a single string as an argument, I need to test to see if the incoming value is a string or a list of strings before processing it. I will gladly accept any better idioms for handling this case. The tests certainly make the DTML code more complex than I think it should be. David S. Harrison (dsh(a)magma-da.com)

8 9

How to Access existing objects of It's own?
by Victor.Zhai＠ogilvy.com 10 Nov '99

10 Nov '99

Hi: I I have encountered a problerm that must be resolved right now. One method of My Object want to change the existing object of it's own.For example: In the container Object,each object in it has a attribute name :Name: which has a original value,But later I want to change All the Name of each object, Whick method can help. I do it like this: for id in self.objectItems(): o=getattr(self, id) try: o.sortflag = 'date_created' #I want to change all object value: "sortflag". except: pass Thanks a lot in advance. "WorldSecure Server <ogilvy.com>" made the following annotations on 11/10/99 03:24:02 ------------------------------------------------------------------------------ Privileged/Confidential Information may be contained in this message. If you are not the addressee indicated in this message (or responsible for delivery of the message to such person), you may not copy or deliver this message to anyone. In such case, you should destroy this message and kindly notify the sender by reply email. Please advise immediately if you or your employer does not consent to email for messages of this kind. Opinions, conclusions and other information in this message that do not relate to the official business of the Ogilvy Group shall be understood as neither given nor endorsed by it. ==============================================================================

1 0

Re: [Zope] Virtual hosting with ZServer
by Michel Pelletier 09 Nov '99

09 Nov '99

Martijn Pieters wrote: > > No, you'll run into trouble with Zope's need to have sites starting at it's > root Folder. People are working on work-arounds for this. One way that > seems to work for people is Evan Simpson's SiteAccess product: > > http://www.zope.org/Members/4am/SiteAccess > > It's release information will tell you how it can be used. I just finished an alpha stab at virtual hosting, ala SiteAccess in Zope. It apears to work well, and is much simpler than Evan's product, since it was possible for us to modify ZPublisher ;). Essentally, it consists of two new features in the infrastructure, first, a 'setSite' method on the REQUEST object that resets all the URLx and BASEx variables, and second we made 'absolute_url()' recursive, so that terminating a URL path from object to root can be done by an intervening SiteObject with not need to maintain lists of path elements etc. that SiteAccess had to do. Many of the idea of SiteObjects came from SiteAccess, Evan has written a nifty product. Once caveat however, in order for Evan to do the things he did, he has the dynamically patch methods in ZPublisher and the REQUEST object. If you use the SiteAccess product, your Zope could concivably break if you upgraded to a new version and we changed the semantics of the methods that Evan patches. In either case, 'official' virtual hosting, ala siteAccess, will be in 2.2. -Michel

1 0

RE: [Zope-dev] manage_addDTMLMethod/Document taking contents as a rgument?
by Brian Lloyd 09 Nov '99

09 Nov '99

> Is there any reason why manage_addDTMLMethod/Document doesn't > accept the > new contents as anything other than a file object? > > Is something like the following acceptable? > > - def addDTMLDocument(self, id, title='', file='', > REQUEST=None, submit=None): > + def addDTMLDocument(self, id, title='', file='', data=None, > REQUEST=None, > + > submit=None): > """Add a DTML Document object with the contents of file. If > 'file' is empty, default document text is used. > """ > if type(file) is not type(''): file=file.read() > - if not file: file=default_dd_html > + if not file: > + if data is not None: > + file=data > + else: > + file=default_dd_html > ob=DTMLDocument(file, __name__=id) > ... Actually, file may be either a file object *or* a string - you should just be able to do: self.addDTMLDocument('MyDoc', title='MyTitle', file='my data...') Brian Lloyd brian(a)digicool.com Software Engineer 540.371.6909 Digital Creations http://www.digicool.com

1 0

@#$%^&*( Zope Concurrency
by gtk 09 Nov '99

09 Nov '99

Bait: I am willing to SPEND MONEY to get this bastard solved. Summary of the situation so far: - Zope cannot deal with overlapping modifications to one object - That includes adding children to containers - The retry mechanism doesn't work - The user sees extremely messy errors - This seriously limits Zope's usability for write-intensive tasks like conferencing - Since all of my plans are for write-intensive tasks, that makes me uncomfortable I've spent my last 24 hours of work on Zope trying to figure out where to hack in any kind of method-aware queueing which could -- at its most simple -- simply not attempt to place more than one call to an object at once. From there, I'd be able to hack the routine for more subtlety. So far, no go. I'm just chasing my tail all around Publish, mapply and a few others, getting nowhere particularly fast. Well, I'm sick of whacking in calls to traceback.print_stack(), guys. I'd much rather get someone who knows what they're talking about to point out "oh, there's half a system in blah.py which needs 30 minutes of work to do what you need, and yeah we know retry is fundamentally broken". Or whatever. So, here goes bribery: If you're Australian and first to point out where I need to apply code, I'll buy you lunch next time I'm in your home city. If you're outside Australia, I'll have Amazon ship a copy of Slaughtermatic to your doorstep. Just someone, please, for fuck's sake, help me solve this concurrency problem before I'm forced to abandon the ZODB and/or Zope entirely. Regards, Garth. -- <gtk(a)well.com>

3 3

Strange behavior in modifying properties
by Rik Hoekstra 09 Nov '99

09 Nov '99

Today I was experimenting a little with inserting and deleting from lines properties (though I see no reason why this would not apply to other properties. There was some strange behavior with modifying lists from dtml. The method was as follows: <dtml-var lst> <dtml-call "lst.remove(REQUEST['remove_item'])"> <dtml-var lst> where lst is a property of the containing folder. The proper way to do this would be to make a local copy of the list and replacing the property with it, but that's not the point. Now, as far as I'm aware this method should have no effect on the properties of the folder, or is it. But is has: it changes the property and it seems to have a permanent effect. But, as it is not a completed transaction changes are undone if ZServer is closed down. A few questions: - has anyone seen this as well - could someone explain me how this works - is this a bug or a feature - if it is a feature - could someone show me its use Rik Hoekstra

2 1

ZCatalog search, index
by sergey2b 09 Nov '99

09 Nov '99

Kind day. How indexing and to search in objects File using ZCatalog? The object File contains txt the document. As Zope 2.1. in ZCatalog to receive the list of all words in an index. Sergey.

1 0

Re: [Zope-dev] Returning lists of Tuples from External Methods
by Jeff Rush 09 Nov '99

09 Nov '99

On Mon, 08 Nov 1999 18:01:41 -0500, Phillip J. Eby wrote: >At 02:48 PM 11/8/99 -0800, David S. Harrison wrote: >> >>But if I return >>a two element tuple, I get a list of the second element of the tuple >>when I use <dtml-in>. I suspect Zope is doing something like >>interpreting the tuple list as name/value pairs and adding them >>to the namespace. But I haven't found any documentation on it. >>Any clues on what is happening here? > >When iterating over a sequence of two-item tuples, <dtml-in> puts the first >item into "sequence-key" and the second into "sequence-item". It is indeed >treating the sequence as a .items() style list. So *that's* whats happening! Drove me crazy trying to get it to work here, and I finally came up with workaround that used sequence-index to subscript into the original sequence. Would that behavior be considered a bug? I kept looking for an option to dtml-in to tell it "hands off" my sequence and don't get smart with it. <dtml-with "_(results = ZopeFind(PARENTS[1], search_sub=1, REQUEST=REQUEST))"> <dtml-in results> <dtml-if "REQUEST.script != ''"> <dtml-let item="results[_['sequence-index']]"  abs_path="_.string.split((URL2+'/'+item[0]), REQUEST.script)[1][1:]">     <dtml-var abs_path> <BR> <dtml-if "not item[1].meta_type in excludables"> <dtml-call "catalog_object(item[1], abs_path)"> <dtml-call "REQUEST.set('itemcount', itemcount+1)"> </dtml-if> </dtml-let> </dtml-if> </dtml-in> </dtml-with> -Jeff Rush

1 0

Re: [Zope-dev] manage_addDTMLMethod/Document taking contents as argument?
by Anthony Baxter 09 Nov '99

09 Nov '99

>>> "Jonothan Farr" wrote > You shouldn't need to modify the source to pass in a string as the document > data. You just pass in a string as the file argument. I use this in the local > file system product. I think you can also pass in a 'file-like' object that > has read() and readline() methods although I haven't tried this. blah. smack me for not being able to read. my excuse is that I'm very tired. Anthony

1 0

manage_addDTMLMethod/Document taking contents as argument?
by Anthony Baxter 09 Nov '99

09 Nov '99

Is there any reason why manage_addDTMLMethod/Document doesn't accept the new contents as anything other than a file object? Is something like the following acceptable? - def addDTMLDocument(self, id, title='', file='', REQUEST=None, submit=None): + def addDTMLDocument(self, id, title='', file='', data=None, REQUEST=None, + submit=None): """Add a DTML Document object with the contents of file. If 'file' is empty, default document text is used. """ if type(file) is not type(''): file=file.read() - if not file: file=default_dd_html + if not file: + if data is not None: + file=data + else: + file=default_dd_html ob=DTMLDocument(file, __name__=id) ob.title=title id=self._setObject(id, ob) if REQUEST is not None: try: u=self.DestinationURL() except: u=REQUEST['URL1'] if submit==" Add and Edit ": u="%s/%s" % (u,quote(id)) REQUEST.RESPONSE.redirect(u+'/manage_main') return ''

1 0