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RE: [Zope] Retrieving type info from Request.Form items
by H.de.Wit＠SFK.NL 15 Oct '01

15 Oct '01

>across it. Anybody else remember something? To test whether something was a >string you had to type something like if TypeOf(aThing)==TypeOf('dummy'): from the book: if same_type(foo,[]): return "foo is a list" Met vriendelijke groeten, Hans de Wit Stichting Farmaceutische Kengetallen Postbus 30460 2500 GL DEN HAAG Tel. 070-3737448 Fax 070-3737445

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Re: [Zope] Retrieving type info from Request.Form items
by Oleg Broytmann 15 Oct '01

15 Oct '01

Please continue to discuss in the mail list. On Fri, Oct 12, 2001 at 10:19:52AM -0400, Douwe Osinga wrote: > > After converting objects are already of the specified type. If you ask > >for :int - you will get integer (not a string). No need to preserve type > >information. > Hi, > > Thanks for your quick answer. I suppose I won't need to get the type > information itself. But how do I find out what the type of the object is, > ie get a string I can pass to manage_addProperty as type parameter? Ah, that's more trickier. Probably, Python builtin function "type()", but it is noot available in DTML - only in Products and External Methods. Oleg. ---- Oleg Broytmann http://phd.pp.ru/ phd(a)phd.pp.ru Programmers don't die, they just GOSUB without RETURN.

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SV: [Zope] User's list using LDAPLoginAdapter
by Magnus Heino (Rivermen) 15 Oct '01

15 Oct '01

> like i said in a previous email, i have only tested the > software against > standards-compliant LDAP servers that i personally have > access to. i don't > have any access to active directory (i refuse to run windoze, > anyway) so i > cannot guarantee that the product will work with active directory. This code/output works: [magnus@bombardier magnus]$ cat ldaptest.py import ldap from pprint import pprint l=ldap.open('ignalina') l.simple_bind_s('CN=Magnus Heino,OU=Employees,OU=Rivernet Users, DC=rivernet,DC=rivermen,DC=se', 'passwd') res = l.search_s('OU=Employees,OU=Rivernet Users,DC=rivernet,DC=rivermen,DC=se', ldap.SCOPE_SUBTREE, 'sAMAccountName=magnus', ['sn', 'givenName', 'mail']) pprint(res) [magnus@bombardier magnus]$ python ldaptest.py [('CN=Magnus Heino,OU=Employees,OU=Rivernet Users,DC=rivernet,DC=rivermen,DC=se', {'givenName': ['Magnus'], 'mail': ['magnus.heino(a)rivermen.se'], 'sn': ['Heino']})] [magnus@bombardier magnus]$ But I still can't figure out how to config LDAPLoginAdapter. Probably because I don't know LDAP enough. Help, anyone? Are there any good books on LDAP around? /Magnus

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List Problem
by Guy THEISEN 15 Oct '01

15 Oct '01

Hi, I have following problem, I have a list like: RessortList:list I call this list in DTML like: <dtml-if RessortList> <dtml-in RessortList> <dtml-call "REQUEST.set('RessortCrit', _['sequence-item']+'|'+RessortCrit)"> </dtml-in> <dtml-call "REQUEST.set('RessortCrit', '('+RessortCrit+'(1&1))&Pressespiegel')"> </dtml-if> after this I make a query: "qNormal(Ressort=RessortCrit,Aufnahme='',Erscheinungsdatum=_.string.replace(Erscheinungsdatum,'$', '&'),Volltext=_.string.replace(volltext,'$', '&'), Objekt=ObjektCrit)" size=10 start=query_start> Everytime I make a call of my query, I got an error. Is there somewhere a mistake in the call of the list ? Or querys don't support lists with other parameters ? GT

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Sort in tree tag
by Lars Heber 15 Oct '01

15 Oct '01

> write a small script (python), > > get_index > try: > my_index = context.index > except: > my_index = 0 > return my_index > now with > <tree .. sort=get_index> I did it with plain DTML: <dtml-if "_.hasattr(aq_explicit,'dirIndex')"><dtml-return dirIndex> <dtml-else><dtml-return "0"> </dtml-if> but didn't work. No error, but also no correct sorting. The order of things is different from that when using no sort= attribute, but I couldn't figure out what kind of order it is :-( Even when I just return the id in my dtml method, where you would expect tree-tag to sort things by id, it doesn't do the sort correctly. So, anybody an idea what's going on here? -- Lars Heber, mailto:Lars.Heber@t-systems.de T-Systems, debis Systemhaus GEI GmbH, Geschaeftsstelle Sachsen

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SVG files in Zope
by D K Systems Inc. 15 Oct '01

15 Oct '01

Is it possible to use Scalable Vector Graphics (SVG) files in Zope ? If so, is there an example of using one? Regards, David

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dtml-tree
by Marc O. Sandlus 15 Oct '01

15 Oct '01

I wonder if there is any working dtml-tree example out there? I tried (each enclosed with <dtml-var standard_html_[header|footer]>: <dtml-tree> <dtml-var id> </dtml-tree> and this <dtml-tree> <dtml-var title_or_id> </dtml-tree> and this <dtml-tree> <dtml-var getId> </dtml-tree> but I get just empty pages. TIA Marc

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Catalog search from Python Script
by Timothy Wilson 14 Oct '01

14 Oct '01

Hi everyone, I'm working on something that should be very easy, but I must be missing something. I've whipped up a little ZClass that will be used to keep track of our school lunch menus. The class has the following properties: menu_date (date) school (string) special_event (string) breakfast_menu (lines) lunch_menu (lines) I created a ZCatalog to allow me to pull out each day's menu and display it on the school's homepage. I'm using a separate Catalog for this with the following indexes and metadata: Indexes ======= menu_date school Metadata ======== menu_date school special_event breakfast_menu lunch_menu I created a very simple Python Script that should query the catalog and return a reference that that day's menu. Here's the code (inspired by examples from the Zope Book): ## Script (Python) "queryMenu" ##bind container=container ##bind context=context ##bind namespace= ##bind script=script ##bind subpath=traverse_subpath ##parameters= ##title=Get today's lunch menu ## """ Retrieve today's lunch menu from the Catalog """ return context.Catalog( {'menu_date' : context.ZopeTime(), } ) The problem is that nothing gets returned even when I know that there's an instance with menu_date set for 10/14/2001 (no we don't serve lunch on Sundays). Any ideas? -Tim -- Tim Wilson | Visit Sibley online: | Check out: Henry Sibley HS | http://www.isd197.org | http://www.zope.com W. St. Paul, MN | | http://slashdot.org wilson(a)visi.com | <dtml-var pithy_quote> | http://linux.com

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Re: [Zope] Performance sending static content?
by Chris McDonough 14 Oct '01

14 Oct '01

> I was wondering -- are there any performance problems associated with > using Zope to serve images and other large static content? Zope can serve about 40 - 100 simple requests per second on stock Intel hardware. Compare this to Apache which is able to do about 200 - 700 requests per second on same. Zope's not as fast as static webservers, nor does it really want to be. It wants to rely on caching to help it out. > In the Java world, we have the Servlet container, which serves Servlets > and JSP pages (the most popular choice probably being Tomcat). However, > you try not to have your Servlet container serving your graphics -- > instead, let Apache do that as a front-end to Tomcat, and have Tomcat > only invoked to serve the dynamic HTML pages. This is often done in the Zope world too. Let Apache or another webserver serve static graphics, let Zope generate dynamic HTML. Another populat strategy is to let Zope generate everything but to use Squid, mod_proxy, or what-have-you as a reverse caching proxy in front of it. > Where it gets complicated, is when you want your application (be it in > Java, Python, or whatever) to manage security etc. There is no good > solution to this in the Apache/Java world (e.g. no way to let your Java > app evaluate security, but let Apache do the actual data serving, > assuming the user passes the authorization test). For graphics only, this generally isn't a problem. For a mix of static and dynamic HTML where you want to serve static HTML from Apache and dynamic HTML from Zope, it can be. This is actually a pretty simple problem. If you want a visit to a URL to show something different to every user depending on their auth credentials, then unfortunately you need to dynamically generate each differing page. If the page needs to be generated dynamically, it's easier to let Zope do that than to try to persuade Apache to do it with SSI or something. Unfortunately this defeats some benefits of caching. I think that most frontend caches try hard to prevent a cached page being shown to a user if that user requests the page with an Authorization: header in the request. For example, if you were using a caching reverse proxy to handle requests to a backend Zope server, if a request came in with an Authorization header that denoted that the request came from "chrism", you wouldn't want to show the user the page generated for "fred". So you let the request make it through to the system which dynamically generates a new page. I think Zope's cache manager software lets you cache different pages represented by the same URL based on auth credentials, but the docs for it are bad enough that I can't quickly tell. :-( If you find out, let me know. There have been various attempts to allow some parts of pages to be cached while dynamically generating other parts. It's hard. > How does Zope deal with this? And if the answer is, "let Zope serve your > images", then does Zope tend to be as noticably slow in serving images > as, say, Tomcat in Java? Zope is not particularly slow, nor is it particularly fast at serving any sort of content, be it HTML, images, whatever. It's almost always a good idea to put a reverse caching proxy in front of Zope to cache static data. There's very little downside and a lot of upside. PS - please try not to send HTML mail to the maillist. Thanks! ---------- Chris McDonough Zope Corporation http://www.zope.org http://www.zope.com """ Killing hundreds of birds with thousands of stones """

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Performance sending static content?
by Bryan Field-Elliot 14 Oct '01

14 Oct '01

I was wondering -- are there any performance problems associated with using Zope to serve images and other large static content? In the Java world, we have the Servlet container, which serves Servlets and JSP pages (the most popular choice probably being Tomcat). However, you try not to have your Servlet container serving your graphics -- instead, let Apache do that as a front-end to Tomcat, and have Tomcat only invoked to serve the dynamic HTML pages. Where it gets complicated, is when you want your application (be it in Java, Python, or whatever) to manage security etc. There is no good solution to this in the Apache/Java world (e.g. no way to let your Java app evaluate security, but let Apache do the actual data serving, assuming the user passes the authorization test). How does Zope deal with this? And if the answer is, "let Zope serve your images", then does Zope tend to be as noticably slow in serving images as, say, Tomcat in Java? Thanks, Bryan

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