- Zope-Dev - Zope lists

Re: [Zope-dev] 2.2.0a1 won't work with query objects
by T.J. Mannos 22 May '00

22 May '00

Kyler B. Laird (laird(a)ecn.purdue.edu) posted a quick n' dirty fix on the Zope mailing list. I'll include it here for convenience: -- snip -- After beating on this over the last day or so trying to understand what was happening at the Web interface level (thinking that I must have just screwed up a permissions setting somewhere), I finally looked at the code and simply commented out line 602 in /data/www/Zope/Zope-2.2.0a1-src/lib/python/DocumentTemplate/DT_In.py # raise ValidationError, index -- snip -- Hope this helps, T.J.

1 0

Q2: ZCatalog Intelligent Objects
by Chris Withers 22 May '00

22 May '00

Hi, Here's the second question: 2. I've seen various mentions of that fact that objects being catalogued can be intelligent about what gets catalogued, for example: stripping out HTML, but where can I find out how to produce an object that does this? Does it make a difference if it's a ZClass-based object or a python class-based object? Does it make a difference if it's CatalogAware or not? How does the 'update catalog' button interact with this? This could make a hacky-workaround for question 1: If, when an object was catalogued, it actually indexed title and body together in an index named 'text', it would solve the OR problem, but how do I do this so that it works in all the cases? cheers, and many thanks for any help :-) Chris

2 3

Q1: ZCatalog Search Expressions
by Chris Withers 22 May '00

22 May '00

Hi, I've read the Interfaces Wiki and other bits of documentation I could fidn and still haev a coupla questions: 1. Is there any way to build complex queries for ZCatalogs? I saw mention of a QueryObject but it's not documented anywhere that I could find. The current method of putting stuff in the REQUEST does something similar to: (Index1 CONTAINS word1) AND (Index2 CONTAINS word2) ...etc And there's the clunky way of doing ranges using form fields. I was wondering if there's a something I've missed that would let me do something like, for example: ((title CONTAINS search) OR (body CONTAINS search) AND (reviewed IS '1') AND (meta_type IS ['Posting','Article','Reply']) AND ( somedate < bobobase_modification_time < someotherdate) If not, I think there should be... and yes I know it's going to be hard to code! ;-) cheers, Chris

1 0

Re: [Zope-dev] Re: Superuser ownership (was "Adding LoginManager at the root")
by Anthony Baxter 22 May '00

22 May '00

>>> Robin Becker wrote > Is there any clear way for stuff which used to work under the old api to > be migrated to 2.2? I'm presently unable to create tinytables as super > user (presumably because they lack the relevant attributes). I used to > be able to access them anonymously, but am unable to under 2.2. I'm getting the feeling (from playing a bit) that the current CVS new security system requires products to be changed to work again - would anyone else like to confirm this? Is it deliberate, or will there be a backwards-compatible mode? Thanks, Anthony. -- Anthony Baxter <anthony(a)interlink.com.au> It's never too late to have a happy childhood.

1 0

Please HELP: Nested ZClass, Nested instance
by Park, Karl 22 May '00

22 May '00

Hello All My name is Karl Park. I am preety new, but very serious in developing on Zope, because my company's intranet is going to move to Zope. There's one problem that I have been struggling with, but still I couldn't find solutions for it. I looked through the how-to's and archives, but could find what I really want to see.. So, if there's anybody that can help me with this, could you please give me your solution as to this? Let me describe my situation below. I created a ZClass in the Product folder. And anther ZClass under the ZClass(thus nested class) Thus it loos like something like this. / Control_Panel Products ------------------------------------------>Product Folder ProjectSpec --------------------------------------> My Parent ZClass ProductInfo ---------------------------------> Nested ZClass of "ProjectSpec" ZClass TranslationMemory ---------------------> Nested ZClass of "ProjectSpec" ZClass ProjectHome --------------------------------------------------> Home folder from which to down, my application resides ProjectSpecEntry ----------------------------------------> All the instances of ProjectSpec will reside here for retrival, viewing, editing etc... We have many projects, and instance(object) of ProjectSpec Object should be programatically created of edited through the web interface. My battle was, create a child object(instance of "ProductInfo" or "TranslationMemory") inside an object which is instance of "ProjectSpec" object. The reason why I designed my classes like this was, as all of you know well, I didn't want fo fill up the "Add List" with lots of ZClass list. >From the theoretical perspective, ProductInfo class(object), TranslationMemory class(object) cannot be thought of without having the ProjectSpec object. To do it, I created a DTML Method which accepts user's input and then, if needed, it have to create an object. (User submits his/her project number in 'prjid' to this DTML method) The code that I tried it is <dtml-with "ProjectSpecEntry.manage_addProduct['LBUProjectSpec']"> <dtml-with "ProjectSpec.createInObjectManager(REQUEST['prjid'], REQUEST)"> <dtml-call "propertysheets.General.manage_editProperties(REQUEST)"> <dtml-call reindex_object> </dtml-with> <dtml-with "_[REQUEST['prjid']]"> <dtml-with "manage_addProduct['LBUProductInfo']"> <dtml-with "ProductInfo.createInObjectManager('Product Info', REQUEST)"> .......................................................................... </dtml-with> </dtml-with> </dtml-with> </dtml-with> </dtml-with> First part is to create the parent object, which works just fine. But the sencond part to create the child object doesn't seem to work. If I take the easy way, that is, creating othere ZClass on the top of the products folder of Control Panel, I can do it. But I don't think it is a good desing from the perspective of OOP.... Could any one of you have solution to this, so that I can keep the Class Hierarchy as above and create the object nested? Your kind reply would be greatly appreciated. Best Regards Karl

1 0

Re: Re: [Zope-dev] ZPatterns framework improvements
by Tres Seaver 22 May '00

22 May '00

"Phillip J. Eby" <pje(a)telecommunity.com> wrote: > > At 05:28 PM 5/19/00 +0000, Jason Spisak wrote: > >Phillip J. Eby: > > > >> I'm not actually real fond of the DDO term, because "Dynamic > >> Data Object" > >> doesn't quite do justice to what these things actually are. I am > >> definitely open to suggestions for a better name. (Facade? > >> PlaceHolder? > >> InsideOutObject? ExternalDataObject? BrainInjectedObject?) > > > >ZopeTupperware, AloofAttributeObjects, DataSkins :) > > > > I think I'm going to go with DataSkins. Thanks for the suggestion. :) > > Now I need a name for another interesting ZPatterns 0.4.0 object... > > I was working on "indexing" plugins for DataManagers (Racks, > Specialists, and DataInjectors) and at one point I realized that > you could use them for things besides indexing. > > The basic idea is that an "indexing" plugin receives objectAdded(), > objectChanging(), objectChanged(), and objectDeleted() messages > from its DataManager. The idea was that it would then be able to > update an index (such as a ZCatalog) accordingly. But during one > of the PTK discussions about member registration, it occurred to > me that a "registration index" could note the addition of a user, > and then e-mail them or do other operations specific to that > portal's business rules. That seemed like an interesting hack of > indexes, but then after a while I realized that these > plugins could enforce any other business rules related to changes > of objects or their addition/deletion. They could, for example, be > reverse indexes that, whenever a new information item was added, > they looked up saved search preferences to find who was looking for > the new item. They could notify a manager about an expenditure > greater than a certain amount. They could roll back transactions if > certain conditions weren't met. And it all could be done outside the > object itself, in the sense that these things would be extensions to > the object's class, based on its location in the Zope filesystem. > > So anyway, "index" now seems rather inadequate to describe these > indexing, search-agenting, business-ruling objects. > (Change Monitors? Knowbots? Indexing Agents? Index Rules? Object > Matchers?) If you have any name suggestions, I'd love to hear > 'em. :) I think it would be good if the name implied both major > capabilities, although I think I might just end up having two > seperate tabs ("Indexes" and "Rules") just to make the capabilities > clearer. It's just that DataManager derivatives already have > so darn many tabs (Methods, Attribute Providers, Sheet Providers, > etc.). This is really just the classic Observer pattern, a la GoF Design Patterns. "ObjectAdded" and "ObjectRemoved" are events a "RackObserver" would register for; "AfterCreate", "Changed", and "BeforeDestroy" are events of the "hosted" object itself. Note that "ObjectAdded" and "ObjectRemoved" would be called during move or rename operations, even though the object is not being created. Tres. -- ========================================================= Tres Seaver tseaver(a)digicool.com Digital Creations "Zope Dealers" http://www.zope.org

2 1

ZSQL methods inside of ZClasses
by Lindell Alderman 21 May '00

21 May '00

I want to create a ZClass that will incorporate a number of ZSQL methods. I have a couple of questions about how I should do this. 1. I don't want to tie my ZClass to a particular database adapter. But to create my ZSQL methods inside of my zclass I need a connection. How do I circumvent this? 2. Even when I do create a ZSQL connection inside of my ZClass and I create my ZSQL method. Every time I run the method, I get a "connection not found" error. What is up? -L

1 0

authorization and SQL-methods
by Peter Toneby 21 May '00

21 May '00

Hi I'm using the latest cvs-version of Zope and I seem to not be able to acces ZSql-methods, I get the login-box, but I can't login as anyone (I have tried to login as superuser, myself (owner/manager) and not at all, but all I get is not authorized. The methods do work in management-mode, but not in the actual pages (or in he view-tab for index_html). Everything Aquires security from the root-folder, but that doesn't seem to help any (neither does giving everyone full rights...). And yes I checked to see that the root-folder is setting "Use database methods". So if anyone has any ideas to try, I'd be happy ;) My guess is that it has something to do with the new security patches, but I'm not sure. oh, right, and another thing, could you cool developers of Zope please take a quick look through all the management-tabs and make sure that they don't move around alot like they do now ;), this would speed up productivity a little for us users ;). /Peter Toneby, who finds stability boring ;) -- Alpha Test Version: Too buggy to be released to the paying public. Beta Test Version: Still too buggy to be released. Release Version: Alternate pronunciation of "Beta Test Version".

1 0

catalogaware dtml document
by Sin Hang Kin 21 May '00

21 May '00

Is it possible (worth?) to make dtml-document catalogue aware by default? Or to allow the creater to decide this behavior by setting a property? Rgs, Kent Sin --------------------------------- kentsin.weblogs.com kentsin.imeme.net

1 0

Re: [Zope-dev] Distributed ZODB-Transactions
by Heine Gregor 20 May '00

20 May '00

> > I want to write an Product that mirrors every ZODB-Transaction to a > > Backup-Server. > > The idea was to trap every transaction (i.e. creation, change, deletion > of > > zope-objects) and transfer a copy of the object to another server (via > > XML-RPC?!?) after the transaction got commited. > > I've been debugging through various zope-classes (esp. transaction.py, > > connection.py) but couldn't understand the way, zope manages the > > transactions. > > The creation and deletion process always seems to trigger a transaction > for > > the parent object. > > Has anybody an idea? > > Data.fs is essentially a log file that is appended with binary data. > The only time the data is changed rather than appended is when you pack > the database. Therefore, it may be easier to write a script that > catches the data that is appended and appends it to the backup file. > When the script detects the file has shortened (after a packing > operation), it should copy the whole file over. > > The simple fact that data is appended rather than changed makes Data.fs > quite reliable. It can withstand most kinds of failure. And the Zope > undo mechanism is very effective. > > So I would suggest that the backup you intend to perform does not need > to be an integral part of Zope. Rather, it is appropriate that it be a > background process run periodically. > > Shane OK, I admit, I didn't tell you the whole truth. ;-) The Backup-Server should not only backup one, but various Zope-installations (sort of 'backup-central'). My idea was to create a folder for each backuped server. This folder holds the complete object-tree of a backup-client. Each time a change in the database of the client occurs, the client informs the server about it (tells the server which object has been changed, created or deleted). Then the server requests that object from the client. The client pickles the object, sends it to the server and the server unpickles it again and puts it in the right place in the client folder. My problem is the first step: how does the client recognize, which object has to be updated? In the case of a creation and deletion of an object, the transaction-class handles the parent object and not the object itself. Thanx, Gregor!

3 2