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Re: [OFFTOPIC] [Zope] EuroZope Membership (2. call)
by Stephan Goeldi 22 Jan '02

22 Jan '02

>Q: Why is EuroZope e.V. not an european association ? >A: Until today there is no possibility, to register an >association in the >EU. As far as I know, 'Europe' is not automatically 'EU'. Greetings from the heart of Europe! -------------------------------------------- Goeldi.com - Swiss Quality Internet Services -------------------------------------------- www.zopehosting.ch zope(a)goeldi.com Tel +41-61-7330555 Fax +41-61-7330556 -------------------------------------------- _________________________________________________________________ Join the worlds largest e-mail service with MSN Hotmail. http://www.hotmail.com

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cmf-topic containing content
by Stephan Goeldi 22 Jan '02

22 Jan '02

I need to create a cmf topic which includes the content of some objects, not only their url. Assume there are some documents, which meet the criteria of a topic. Usually, clicking on the topic shows me the links to those documents. But I want the content of these documents to be displayed, when clicking on the topic. Is this possible? _________________________________________________________________ MSN Photos is the easiest way to share and print your photos: http://photos.msn.com/support/worldwide.aspx

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getting aspolute url of an objevt with id="xxxxxx"
by sree 22 Jan '02

22 Jan '02

Dear friends, Greetings! I have encountered a situation where i know the id of the object. I need to get the absolute url of this object. How do i get this? Regards, - sree

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hopefully a simple hook
by Matt 22 Jan '02

22 Jan '02

Hi, I was wondering if there was a simple hook into ObjecManager or something like this that lets me know when an item in the container has been altered. At present I have to actively mine the container for changes to bobobase modification times of the objects it contains. I have wrapped a small product around Folder.Folder to allow me to do this, but would like to find a hook that lets me know when the modification time of a contained object has changed. Matt

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RE: [Zope] Static fail-over
by sean.upton＠uniontrib.com 22 Jan '02

22 Jan '02

This might be hard to do with a load-balancer setup alone, because the balancer would need to know when to fail over (and not just in the case of Zope stopping to respond); another similar solution might be more along the lines of IP takeover software like Heartbeat (linuxha.org) or Failsafe (oss.sgi.com) that makes the "safe" hot-backup Zope box takeover the identity of the "corrupted" primary Zope box, assuming that you have a monitoring setup on the backup to audit the integrity of your primary Zope service/data. The advantage that this has over a load-balancer approach is that you can write your own custom monitors/audit-scripts to determine/test the criteria for a failover to a much more fine-grained degree than just refused HTTP connections. Linux Failsafe has service monitoring setups, while you would use Mon or something similar in conjunction with Heartbeat. I would suggest a combination of Squid in front and heartbeat or Linux Failsafe on Zope boxes (either independent ODB or with ZEO) nodes in this case. You could use ZEO+ExternalMount or ZSyncer to copy content to your second Zope if you had 2 antonymous Zopes. Squid (or any other reverse-proxy or load-balancer) would then obey any IP address takeover from a hot-backup node happening via gratuitous/unsolicited ARP. Sean -----Original Message----- From: Anthony Baxter [mailto:anthony@interlink.com.au] Sent: Monday, January 21, 2002 4:18 PM To: Terry Hancock Cc: zope(a)zope.org Subject: Re: [Zope] Static fail-over >>> Terry Hancock wrote > I have a Zope site which I'm doing a lot of development > on, and all internal safeguards aside, I feel there's a > significant chance of wrecking Zope in the process. Then > it might take anywhere from hours to days to get it back > up again. Aside from making sure you have a sane development and deployment process, you could consider using a load balancer, set up to point to the primary (development?) server normally, and switching it to a backup one when things fail. There's a bunch of hardware or software ones - I've used both. Hardware's better, obviously, but you could consider something like the tool 'balance' from balance.sf.net Anthony _______________________________________________ Zope maillist - Zope(a)zope.org http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )

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Fat client thoughts, was: RE: [Zope] Zope + XML-RPC + native GUI
by sean.upton＠uniontrib.com 22 Jan '02

22 Jan '02

No, I haven't done this, but I plan to do something like this to create a fat client to interact with content objects in a CMF site I am building. I've been playing around with wxPython and Boa Constructor (http://boa-constructor.sourceforge.net) I'd be interest in finding out ways in which other people might be creating apps using these tools. Something that would really help in this arena is some stock tools for doing this quickly using Boa Constructor, as well as some basic coding standards (perhaps via defining component interfaces) for people creating content types/product classes that are interface-compatible with said components. I imagine the Zope side of this could be accomplished with a mixin class that implemented said interfaces for you to make it easy for product authors to make their product work with a stock GUI toolkit. The ideal setup would enable the drag-and-drop rapid creation of GUI apps in a tool like Boa, and this would in turn allow for many interesting applications - ones that wouldn't have to reinvent the wheel to create the glue code for a GUI fat-client app that uses Zope as a data store and/or some sort of middleware. One thought that I had was that it would be nice to create generic data-source and data-access components, similar to what Borland Delphi has for relational databases, but for accessing an individual content object within a path in Zope: - the DataSource (called ZopeDataSource?) is the URL of the content-object, the DataSource object would have a datasync() method, which would sync all data components/widgets mapped to particular data write/set methods in the Zope object by calling those methods within a single transaction. The DataSource would also contain an optional object for holding read-only Dublin Core metadata for CMF content objects. The DataSource would also have a variety of Dialog box functions for handling server-generated exceptions. - a data-enabled text box widget can have a mapping to 2 method names (one for read, other for write) - a data-enabled combo/drop-down widget can have a mapping to read/write methods, and also a mapping to a method for populating a dropdown list - a data-enabled multiple selection listbox item that works generally the same way as a combo box above - a data-enabled radio-button group has mappings to read ("get selected value") and write methods - a data-enabled checkbox component that has read (isChecked) method and a write method - a data-enabled table widget that can be populated with a sequence of sequences, and saved by writing a new sequence - a data-enabled date selection / editing widget that works with Zope DateTime objects, read/write method mappings - a data-enabled tree widget for values of an ObjectManager derived item, so that contained objects can be edited, uses stock objectIds() and objectValues() methods; this could, in theory, display icon images the same way Zope does in a browser. - a data-enabled image widget that would read a Zope image object, and provide an image view, and support a replacement image upload. - a data-enabled memo widget, with support for editing both plaintext or XML in a ParsedXML document - Widgets would have a means of enforcing data-type for robust applications - Eventually a table widget for browsing multiple content objects within a ZCatalog Query result or ObjectManager item listing would be nice, as well - In theory, these widgets could also be used (somehow?) for relational data through Zope via ZSQL methods? It would be nice, in the above scenario, to be able to change a bunch of fields in an object in a single transaction, but I'm not sure how easy this would be... I imagine that there would be a way to marshall a bunch of method calls (map the method names and parameters into a dictionary or something along those lines?) into a single method call (hypothetical ZopeDataSource.datasync() above), and encapsulate the change to a single object within one XML-RPC based transaction. A cross-platform fat-client toolkit would be a real help, especially for CM sites, where there is often a need for more advanced data-entry bells and whistles you cannot get from an HTML form (spell checking, better layout, hotkeys, tab-order, more interactive interface, better dialog boxes). I really think a toolkit of this variety would be just the kind of thing that would help Zope's use become fairly widespread for a completely different classification of application, as well as increase Zope's appeal as a CMS platform. Anyway, these are my thoughts... any comments? Sean -----Original Message----- From: Thomas Guettler [mailto:zopestoller@thomas-guettler.de] Sent: Monday, January 21, 2002 8:36 AM To: zope(a)zope.org Subject: [Zope] Zope + XML-RPC + native GUI Has anyone developed an application using a native GUI Frontend to Zope? I had this idea some time ago and found an interessting example from Amos Latteier. He uses xml-rpc and WxPython. I like it a lot, played with it this weekend. Has someone seen other projects using Zope and a native GUI? thomas _______________________________________________ Zope maillist - Zope(a)zope.org http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )

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Static fail-over
by Terry Hancock 22 Jan '02

22 Jan '02

I have a Zope site which I'm doing a lot of development on, and all internal safeguards aside, I feel there's a significant chance of wrecking Zope in the process. Then it might take anywhere from hours to days to get it back up again. Although this may be sort of unlikely, it would give me some comfort to have planned for the possibility. I was wondering if there's some way I could configure Apache to fail-over to a static web site should the Zserver just stop responding (i.e. crash). Maybe this is really easy or maybe hard, but I thought someone here might know a good way. I figured it would have to have something to do with how you set up a 404 page for Apache (maybe point it to a static index page?). Is it just that simple? Or is there a smarter approach? Thanks! -- ------------------------------------------------------ Terry Hancock hancock(a)anansispaceworks.com Anansi Spaceworks http://www.anansispaceworks.com P.O. Box 60583 Pasadena, CA 91116-6583 ------------------------------------------------------

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Re: Fwd: Re: [Zope] getting aspolute url of an objevt with id="xxxxxx"
by pieter.claerhout＠pandora.be 22 Jan '02

22 Jan '02

Try the following instead: <dtml-var expr="_.getitem('image').absolute_url()"> You need to specify the brackets since absolute_url is a method, and not a property. Cheers, Pieter ------------------------ sree(a)indiacares.org wrote: ------------------------ >Dear friends, >I tried this but the result is : > > >Output in browser: > >Please help. >Regards, > - sree > >-----Original Message----- >From: "Phil Harris" >_.getitem('xxxxxx').absolute_url() > >this assumes that xxxxxx is in the acquisition path > >----- Original Message ----- >From: "sree" >To: >Sent: Tuesday, January 22, 2002 5:23 AM >Subject: [Zope] getting aspolute url of an objevt with id="xxxxxx" > > >> Dear friends, >> Greetings! >> >> I have encountered a situation where i know the id of the object. I >> need to get the absolute url of this object. How do i get this? >> >> Regards, >> - sree >> >> >> >> _______________________________________________ >> Zope maillist - Zope(a)zope.org >> http://lists.zope.org/mailman/listinfo/zope >> ** No cross posts or HTML encoding! ** >> (Related lists - >> http://lists.zope.org/mailman/listinfo/zope-announce >> http://lists.zope.org/mailman/listinfo/zope-dev ) > > > >_______________________________________________ >Zope maillist - Zope(a)zope.org >http://lists.zope.org/mailman/listinfo/zope >** No cross posts or HTML encoding! ** >(Related lists - > http://lists.zope.org/mailman/listinfo/zope-announce > http://lists.zope.org/mailman/listinfo/zope-dev ) >

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RE: [Zope] Static fail-over
by sean.upton＠uniontrib.com 22 Jan '02

22 Jan '02

Chris, I'm still playing around with this, but have you tried a high setting for negative_ttl? Sean -----Original Message----- From: sean.upton(a)uniontrib.com [mailto:sean.upton@uniontrib.com] Sent: Monday, January 21, 2002 4:11 PM To: chrism(a)zope.com; hancock(a)anansispaceworks.com; zope(a)zope.org Subject: RE: [Zope] Static fail-over I'm researching this; there was a thread on the squid-users list a month or two back to this regard, and I don't remember what the verdict is exactly, but I'll find out. Sean -----Original Message----- From: Chris McDonough [mailto:chrism@zope.com] Sent: Monday, January 21, 2002 4:16 PM To: Terry Hancock; zope(a)zope.org Subject: Re: [Zope] Static fail-over Use Squid, set caching headers on all of your pages, and spider the site each time you bring it up. There are probably some configuration options in Squid which allows it to continue to serve content when the origin server has disappeared (if anybody knows this, I'd like to know too, so please reply if you do! ;-) - C ----- Original Message ----- From: "Terry Hancock" <hancock(a)anansispaceworks.com> To: <zope(a)zope.org> Sent: Monday, January 21, 2002 8:28 PM Subject: [Zope] Static fail-over > I have a Zope site which I'm doing a lot of development > on, and all internal safeguards aside, I feel there's a > significant chance of wrecking Zope in the process. Then > it might take anywhere from hours to days to get it back > up again. > > Although this may be sort of unlikely, it would give > me some comfort to have planned for the possibility. > > I was wondering if there's some way I could configure > Apache to fail-over to a static web site should the > Zserver just stop responding (i.e. crash). Maybe this > is really easy or maybe hard, but I thought someone > here might know a good way. I figured it would have > to have something to do with how you set up a 404 page > for Apache (maybe point it to a static index page?). > Is it just that simple? Or is there a smarter approach? > > Thanks! > > -- > ------------------------------------------------------ > Terry Hancock > hancock(a)anansispaceworks.com > Anansi Spaceworks > http://www.anansispaceworks.com > P.O. Box 60583 > Pasadena, CA 91116-6583 > ------------------------------------------------------ > > _______________________________________________ > Zope maillist - Zope(a)zope.org > http://lists.zope.org/mailman/listinfo/zope > ** No cross posts or HTML encoding! ** > (Related lists - > http://lists.zope.org/mailman/listinfo/zope-announce > http://lists.zope.org/mailman/listinfo/zope-dev ) > _______________________________________________ Zope maillist - Zope(a)zope.org http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev ) _______________________________________________ Zope maillist - Zope(a)zope.org http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )

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New Medical/Healthcare Python/Zope user group - Zopymed
by Jon Edwards 22 Jan '02

22 Jan '02

>From an idea on the Openhealth mailing list, we've setup a new user-group for Zope/Python users involved in the Medical/Healthcare fields (and surrounding fields, such as Education, Research, BioInformatics) ...or ZoPyMed for short! Just a mailing list so far - http://maillist.linuxmednews.org/mailman/listinfo/zopymed - but we can setup an associated website if there is sufficient interest. Short-term, the list is a place to ask questions and share ideas, code, tips and useful-links. Long-term, we might aim to create reusable components/functionality and promote interoperability between different applications. But the "agenda" is very fluid, and open to suggestions! So, if you're using Zope/Python and are involved in Medical/Health-related IT, please join up, introduce yourself, and tell us what you'd like to see from this group! Cheers, Jon Jon Edwards Pricom Ltd www.pricom.co.uk

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