March 2001 - Zope - Zope lists

Generic User Source Query
by karthick ramanarayanan 08 Mar '01

08 Mar '01

Hi, I am not getting the generic user source option in the Login Manager Add form. Neither am I getting the login method options. I am trying to use Login Manager with SQL. Is it a problem with the ZPatterns plugin kind. Please help me out. I am using the following Product setup: ZPatterns-0-4-0a5 LoginManager-0-8-7a1 The sql and dtml methods are setup in the acl_users(Login Manager). But I am encountering a problem using Login Manager with SQL. Bye, With Love, A.R.Karthick

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Re: [Zope] IPC 9 News?
by Karl Anderson 08 Mar '01

08 Mar '01

Chris Withers <chrisw(a)nipltd.com> writes: > Hi, > > I was wondering if anyone had any cool news from the Zope track at IPC 9 for > those of us who can't make it? Check out ZopeNewbies. -- Karl Anderson karl(a)digicool.com

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Re: [Zope] manage_addDTMLDocument
by Dieter Maurer 08 Mar '01

08 Mar '01

nuno writes: > <dtml-var location> -> has the string 'PARENTS[0].DIR1.DIR2' which is the > place where i desire to create the document.then i try this: > <dtml-call > "_[location].manage_addDTMLDocument(id=pagename,title=pagetitle,file=page)"> This is an FAQ. I answer it over and over again... Please read the mailing list archives (searchable) or URL:http://www.dieter.handshake.de/pyprojects/zope/book/chap3.html If you have a string S (in your case 'PARENTS[0].DIR1.DIR2') and you look it up in the namespace "_" then the string is *NOT* treated as an expression but used atomically (literally) as the key in the namespace mapping. Thus, you look for on object with name "PARENTS[0].DIR1.DIR2". This name contains many funny characters, two '.', '[' and ']'. You want this funny characters to be treated as operators. Python's "eval" would do this, but it is not exposed to DTML for security reasons. What are your options? 1. inside an external method, you can use Python's eval External Method: def extmethod(expr,_): return eval(expr,_) Called from DTML: "....extmethod(location,_)...." 2. you can try to use "restrictedTraverse" to map strings (or sequences of strings) to objects. In your case, "restrictedTraverse" can not evaluate "PARENTS[0]". But "DIR1.DIR2" can be handled: PARENTS[0].restrictedTraverse(_.split(location,'.')) Dieter

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Re: [Zope] ZSQL in Products
by Dieter Maurer 08 Mar '01

08 Mar '01

Alexander Chelnokov writes: > A newbie question. Some ZSQLs work properly if the application is > created in a Zope tree. The same methods become unaccessible > (login/passw window appears) if a Product created from the code and > the application is an instance of the product. What permission and > where must be set? THX in advance. Zope's permission machinery works only with "acquisition wrapped" objects. Read URL:http://www.dieter.handshake.de/pyprojects/zope/book/chap3.html to learn more about acquisition wrappers. In Zope objects are usually automatically wrapped during traversal or attribute lookup. In your own product, several thing can prevent wrapping: * in the constructur, the object being constructed is not yet wrapped * the class must be derived (directly or indirectly) from "ExtensionClass.Base". Dieter

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Re: [Zope] What button submitted
by Dieter Maurer 08 Mar '01

08 Mar '01

Axel Missbach writes: > having a form with some buttons.(Add, Edit, Del...). Every button shoulg > call the same form, wich one should handle the diffrent button-methods. > Please tell me a way how to get to know which button is pressed. Every > button is in the REQUEST, but i can't see, which one is the caller. If this is really the case, then you have a broken browser. The HTML specification states unmistakenly, that a submit button is only successful if it submitted the form. Dieter

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unsettable variable?
by Joh Johannsen 08 Mar '01

08 Mar '01

I've got a case like this: <dtml-in get_action_text> <dtml-if expr="action_text=='WIPE_OUT_THIS_VALUE'"> <dtml-call "REQUEST.set('action_text','atest')"> <dtml-call "REQUEST.set('zction_text','ztest')"> action_text is <dtml-var action_text>, zction_text is <dtml-var zction_text> </dtml-if> Here is what shows up for the values when the above is run: action_text is WIPE_OUT_THIS_VALUE, zction_text is ztest Why can I not set the 'action_text'? It really seems like there must be something really obviously stupid in what I am doing, but I just can't see it. Are there cases where a REQUEST.set will have no effect on a dtml-var? Regards, JJ

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Re: [Zope] ZCatalog and ExtFile
by Andrew Williams 08 Mar '01

08 Mar '01

> >Andrew Williams writes: > > ... > > However, ExtFile does not update ZCatalog whenever I add another >ExtFile > > object to the ZODB. I've checked the ExtFile code, and indeed, ExtFile > > inherits from Products.ZCatalog.CatalogAwareness, CatalogAware. >You are aware, that "CatalogAware" requires the catalog to >have a specific id and be available through acquisition? > > >Dieter I'm sorry Dieter, I'm not following you... could you explain a little more? _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com

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making existing zclass catalogAware
by David McCuskey 08 Mar '01

08 Mar '01

i have an existing zclass with several property sheets which i would like to make CatalogAware so that the class instances automatically re-index themselves when changed. i haven't been able to find any documentation on adding CatalogAwareness after the fact. so, i'm wondering... 1. can it be done ( easily )? 2. is it better/easier to just re-create my zclass? if i need to re-create my zclass, what important pieces of information do i need to save so that the objects which already exist get picked up again when i create the new one? ( eg, the meta type? the zope class id? ) thanks for any help, david -- David McCuskey dmccuskey(a)bigfoot.com

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Persistence in Python Scripts
by Cyril Elkaim 08 Mar '01

08 Mar '01

Hello, The following code seems to trigger the Persistance machinery. Is it true? ----------------------------- ## bounds: context, container, script, _, traverse_subpath ## parameters: background, image result = None if background == "": return "left:0px; top:0px" for name, object in container.getParentNode().objectItems(): if name == background: back_width = int(object.getProperty("width")) back_height = int(object.getProperty("height")) if name == image: front_width = int(object.getProperty("width")) front_height = int(object.getProperty("height")) left = (back_width - front_width) / 2 top = (back_height - front_height) /2 result = "left:" + str(left) + "px; top:" + str(top) + "px" return result ------------------------------ The reason I ask this question is that sometimes I get Conflict Error when this script is executed. It's the case when it's called many times in the same document. Cyril Elkaim

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NT+IIS+MS SQL Server+Zope
by Donald Braman 08 Mar '01

08 Mar '01

I'm developing a site on RH70/Apache/Postgres/Zope. However, I need to get a (mostly NT) sysadmin to buy into Zope, and that may mean using Zope with NT/IIS/MS SQL Server. I have two questions in this regard: 1. I'm wondering if anyone out there has had experience with the latter combination and if they have any advice about it. I've read this: http://www.zope.org/Members/roberth/ZMSSQLServer but am wondering what people suggest reagarding ZODBCDA, ZmxODBC, and any other issues like those described in earlier posts this month. One of the selling points of Zope to this guy is that it is Free, so the licensing of ZmxODBC may be an issue (they don't have pricing up on the site yet). Are there other viable alternatives to ZODBCDA? 2. I'm wondering if anyone has had experience migrating Zope/postgres/linux to Zope/MSSQLServer/NT and what advice they might have on this or about migration in general. (I'd develop the site in NT, but NT won't on on my "wimpy" development hardware.) Don

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