March 1999 - Zope-Dev

Changes to error handling output - where?
by skip＠mojam.com 09 Mar '99

09 Mar '99

I'm interested in making a change to the way errors are reported, but I'm having a hard time nailing down where the changes need to be made. (All statements reflect what I see in 1.9.0. I'm moving toward 1.10.2, but am not quite there.) I'd like BOBO_DEBUG_MODE/Z_DEBUG_MODE to accept three values: 0 & 1 would have the same effect as they currently do. For any other value, I'd like the system to treat the value as an email address & subject and mail the traceback to the given address using the given subject. For example, a value something like "skip@mojam.com:Bobo Traceback" would send a message to skip(a)mojam.com with a subject of "Bobo Traceback" containing the traceback. I've been able to figure out that BOBO_DEBUG_MODE and Z_DEBUG_MODE are fiddled in ZPublisher.Publish.get_module_info, but I can't see where bogosities in executed methods are caught and handled. Any pointers would be greatly appreciated. Thx, Skip Montanaro | Mojam: "Uniting the World of Music" http://www.mojam.com/ skip(a)mojam.com | Musi-Cal: http://www.musi-cal.com/ 518-372-5583

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RE: [Zope-dev] What to raise to generate an HTTP error response?
by Michel Pelletier 08 Mar '99

08 Mar '99

> -----Original Message----- > From: skip(a)mojam.com [mailto:skip@mojam.com] > Sent: Monday, March 08, 1999 1:52 PM > To: zope-dev(a)zope.org > Subject: [Zope-dev] What to raise to generate an HTTP error response? > > > > I have a Bobo/ZPublisher method that detects a missing file > it needs. I > want to return a 404 HTTP response. I know my method is > supposed to raise > something, but what? I know it must be in the docs > somewhere, but I'll be > damned if I've been able to find it. (I hope there's a Zope > site search > tool in the works. How about setting up Ultraseek or > something similar in > the meantime?) > Skip, If your using 1.10.2 ZPublisher (previous versions I'm not sure of) Try returning RESPONSE.notFoundError() (lib/python/ZPublisher/HTTPResponse.py L437, probably in Response.py in older versions of ZPublisher) -Michel > Thx, > > Skip Montanaro | Mojam: "Uniting the World of Music" > http://www.mojam.com/ > skip(a)mojam.com | Musi-Cal: http://www.musi-cal.com/ > 518-372-5583 > > _______________________________________________ > Zope-Dev maillist - Zope-Dev(a)zope.org > http://www.zope.org/mailman/listinfo/zope-dev > > (For non-developer, user-level issues, use the companion list, > zope(a)zope.org, http://www.zope.org/mailman/listinfo/zope ) >

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What to raise to generate an HTTP error response?
by skip＠mojam.com 08 Mar '99

08 Mar '99

I have a Bobo/ZPublisher method that detects a missing file it needs. I want to return a 404 HTTP response. I know my method is supposed to raise something, but what? I know it must be in the docs somewhere, but I'll be damned if I've been able to find it. (I hope there's a Zope site search tool in the works. How about setting up Ultraseek or something similar in the meantime?) Thx, Skip Montanaro | Mojam: "Uniting the World of Music" http://www.mojam.com/ skip(a)mojam.com | Musi-Cal: http://www.musi-cal.com/ 518-372-5583

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Features / Demos want
by Kent Sin 08 Mar '99

08 Mar '99

Dear Zope developers, I dl zope recently, I think it will become a great site management product. However, I can not learn much from the docs I found. Here are some things in my mind, Please consider to put them into the docs and give some examples to get people start. 1. Auto (dynamic) Site map generation. A branch can be excluded by assigning a specific attribute to the folder. 2. Auto menu generation. Nodes with specific attribute on it. Can be horizontal or vertical. Just like in Zope's site. 3. News page generation. With automatic expire by designated date. 4. Ad banner insertation and billing management. 5. Search the site. 6. Expire pages by designated date. (will remove them from menu) 7. Backup / versioning 8. Personalize : like that on excite. 9. Access to meta information inside the page: time-last-modify, author, last-visit-time, version, visit-counter, meta-tags. 10. Support Spiders 11. Xml storage and publishing : store them with parsing, searchable, publishing with stylesheet (we may not want to give them all of the XML, may be part of it). 12. A better WYSIWYG authoring tool. 13. Multi-linguage management: use browser's lang perference to select language sent out, with auto menu generate in that lang and change lang menu auto gen. When a page is modified, list all pages need to modify in other languages. (some what like fontpage's task list?). Thanks for

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Re: [Zope-dev] Features / Demos want
by Sin Hang Kin 08 Mar '99

08 Mar '99

Chris, > This is trivial to do, or are you complaining that you just don't know > how? One of the neat things is to look at the DTML behind zope.org. I > use TinyTables to control the side-bars, but certainly you could do it > in other ways. Yes! I have check the zope / . I press on the DTML tag and got: DTML Source for /  <h1></h1> <h2>Welcome to the Zope Web Site.</h2> NO. I do not see how you did it. The point is that zope is aimed for programmer who somehow got insider information somewhere. For a normal user, I do not think they can figure out how to use it. I hope there will be lots of information/demo codes that tell a new user all the normal tricks they need to do. Of cause, I really love to see how you make the menu. > 3. News page generation. With automatic expire by designated date. Same here. > 4. Ad banner insertation and billing management. Can you say political hotbutton :-) > 9. Access to meta information inside the page: time-last-modify, author, > last-visit-time, version, visit-counter, meta-tags. > Well, here's the problem... what's a pagee? ;-) How do you decide "last >modified" and author when a page can be constructed of objects that have >dozens of other objects inside them? What's a "visit counter" in this > context? Well, I found out that many times when I read the list archive. However, for me I think there are pages concept from the user(browser) point of view. To name it. it either is a document, a folder, a method call which have a url (unique?) on top of the browser. That url define a page to the user's point of view. Since it is not static and can contain many objects which means that we need to define some rules: For example, the author can just be the user who update that object (the one invoked by the url). The last update can be defined as the last update of that object or the last date all objects involved in rendering this page (which may be hard to get) or defined as an attribute which will be updated by the zope (when an object is update). > 10. Support Spiders > What do you mean by this? Since zope is dynamic, I guess that it does not work very well with spiders: I heard from the list that it is not easy to generate all pages by using a robot to travel it. > 12. A better WYSIWYG authoring tool. >On what platform? I don't own a Windows box, Mac and UNIX only... this >will be fixed with WebDAV in my opinion, and it isn't the job of Zope to >push it's own proprietary solution. I know that Netscape communicator and frontpage express can be used for publish pages to zope. However, under the current dtml syntax, I can not modify them to insert zope code into the pages. Rgs, Kent Sin

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Have any ideas for aliasing meta type, role name, etc?
by LEE, Kwan Soo 08 Mar '99

08 Mar '99

Hi, Zopistas, I've been translating Zope frame work into Korean, as I told before and almost nobody showed interest. Now what I call KZope seems working, though many dtml files are to be translated still. Currently, KZope shows part Korean, part English screens. I guess the relative easy of translating Zope into another human language comes from that many key words of Zope frame work are stored as a value of dictionary(right?). BUT, there IS a Problem. What if one export/import Zope objects between EZope & KZope? It shows wired things. And I guess this comes from that object from EZope or KZope has different meta infos. One possible solution is much further dissociation of "Presentation" from "Logic". See the example below from OFS/Folder.py(don't worry of strange characters or boxes in <from KZope> column. That is (or was) Korean chars) <from EZope> <from KZope> class Folder(....): class Folder( ... ): """ ... ... """ meta_type='Folder' <-a-> meta_type='폴더' id ='folder' <-b-> id ='folder' title ='Folder object' <-c-> title ='폴더 객체' icon ='p_/folder' <-d-> icon ='p_/folder' meta_type and title strings appear on the screen. So I translate them. id will be a part of url, so I'd better not translate them. icon string is Zope frame work default. So I do not. I SEE a some lack of consistency here. Why should part of internal python code(meta_type) will appear on the user screen? Don't you think DTML part of Zope frame work should control what appears on the user screen? What, I guess, to be a solution is making meta_type, role, etc into a tuple which inclues a dictionay. i.e. meta_type=('Folder', {'default':'Folder', 'Korean':'폴더', 'German':'XXX', 'Czech':'YYY'}) __ac_roles__=( ('Manager', {'default':'Manager', 'Korean':'관리자', 'German':'xxx', 'Czech':'yyy'}), ('Anonymous', {...} ) ) Oh, yes, this is a HUGE & comples task and DC will not benefit from this in a near future. And I do not ask DC to do so. What I want is the suggestions from the more knowledgables. Could be there much more simple and elegant way? tuplizing meta infomation will punish the performance too much? Will the Zope frame work structure be altered to make this kinds approach impossible? Just think Globally. Dream of the soon-to-be-huge China market. Possible BENEFITS of 'tuplizing' meta infos will include safer route to upgrading individual Zope Products. LEE Kwan Soo. ps. If my English expressions are offensive, that's not my intention but the showcase of how hard to use English.

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External Methods and adding users
by Shaw, Howard 07 Mar '99

07 Mar '99

I wrote a quickie External Method that is called when I add an individual to a database. It proceeds to create a directory for the individual, add a UserFolder, add a user to the UserFolder. However, it attempts to set the user's password to the user's id, and for some reason, this fails to work. I don't know how to see what password it did set... When I call _AddUser, or whatever that function is, _doAddUser, I think maybe, am I supposed to pass an already encrypted password? When I open the user in the management folder and type the password in manually, it works perfectly. Please help. Howard Clinton Shaw III Howard Clinton Shaw III

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a possible neat hook into Zope's object DB...
by Anthony Baxter 07 Mar '99

07 Mar '99

Have a look at http://www.inf.bme.hu/~mszeredi/avfs/ - it's a (linux-only) library that gets preloaded before an executable, and allows you to access a 'virtual file system'. The examples that are shipped are looking inside various archive formats - tar.gz, that sort of thing, but it's possible something similar could be useful to access Zope's object DB... Anthony

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Re: [Zope-dev] Features / Demos want
by Dave G 07 Mar '99

07 Mar '99

>Christopher Petrilli wrote: >> On Sun, Mar 07, 1999 at 08:51:18AM +0800, Kent Sin wrote: > >> >> > 13. Multi-linguage management: use browser's lang perference to select >> > language sent out, with auto menu generate in that lang and change lang >> > menu auto gen. When a page is modified, list all pages need to modify in >> > other languages. (some what like fontpage's task list?). >> >> This would be neat, but... this is a HUGE HUGE HUGE HUGE task, and I've >> never found a web site that does it "automatically", only thru selecting >> seperate menu itenms. Make sense? > >Actually, Chris, I think the Debian Linux home page at www.debian.org does >do auto language selection. I've never experienced it myself (being one >of those nearly-mono-lingual Americans everyone like to trash) but I've >heard it is automatic. > >Couldn't resist - set Netscape to prefer German (de), force-reloaded >www.debian.org, and lo and behold, there's a bunch of unreadable Deutch >on my screen! (well unreadable to _me_;-) > >Ross > That could be done through ZServer, most Mac Webservers (Web* and QPQ come to mind) can set a preference to auto redirect for language specific sites. The webmaster has to setup seperate root folders for each domain and language, then the webserver uses the correct root folder based on the browsers language preferance. This would be relatively easy if (when ?) ZServer supported Vhosting. DAve. > >> >> Chris "On the Plains of Hesitation bleach the bones of countless millions who, at the Dawn of Victory, sat down to wait, and waiting -- died"

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Is DocumentTemplate thread-safe?
by skip＠mojam.com 06 Mar '99

06 Mar '99

Can multiple threads call a DocumentTemplate instance simultaneously, or do I need to lock it? Thx, Skip Montanaro | Mojam: "Uniting the World of Music" http://www.mojam.com/ skip(a)mojam.com | Musi-Cal: http://www.musi-cal.com/ 518-372-5583

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