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Re: [Zope] Zooming images
by Anthony Baxter 18 Oct '99

18 Oct '99

>>> Robin Becker wrote > >And the second approach is to use the Python Image Library to > >read in and rescale your images, either on the fly (real slow!) or > >to store two representations as attributes of a object's instance. > > > ... > I had a few problems using the Image library due to name clashes. The most recent release of PIL allows you to install it as a package. This fixes the name clash. Anthony -- Anthony Baxter <anthony(a)interlink.com.au> It's never too late to have a happy childhood.

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Disabling buttons
by Paul Prescod 18 Oct '99

18 Oct '99

I'm taking over an app that uses a bunch of client side Java. The only reason I can see it uses Java is because it allows you to build logic like "if this radio button is selected, this checkbox is disabled." If there was a way to do this in a combination of DTML and Javascript then the app could use just those technologies. Has anyone got a demo of something like that? I can think of fairly convoluted ways to do it -- is there a straightforward way? Paul Prescod

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RE: [Zope] Browser Sticky Fingers
by Ian Blenke 18 Oct '99

18 Oct '99

On Tue, Oct 19, 1999, Jeff Rush wrote: > I'm pulling my hair out here over what is probably a simple HTTP issue. > I have a Zope method that stuffs a new image into a Zope Image object, > based on the content of the page where the method is called. Your IMG tags point to the same URL but the actual image contents dynamically change? > The problem is that the image is not updated until I exit the browser, > and then flush all of it's caches manually. This is definitely a browser caching issue. > I've turned off any proxy support, configured Netscape 4.x with the > option "Document in cache is compared to document on web site [always]", > and even run the 'curl' utility outside of the browser that prints the > HTTP headers. The headers show that the modified date is changing, > the size is changing (different image sizes), and that there is no expire > header. I thought maybe I needed one but noticed that no where in > the Zope source code do they use one, and when one of their > images is re-uploaded via the /manage_upload, it displays correctly. > > Am I missing something simple? Here's something simple to do: append a "?randomstring" to the end of the SRC of your IMG tags, ie: <IMG SRC="/Images/myimage_gif?<dtml-var randomstuff>"> Here's a little example that should work. This uses a timestamp to mark the IMG SRC (based on Bill's "HowTo Autogenererate an Object ID"): <dtml-call "REQUEST.set('ts', ZopeTime())"> <dtml-call "REQUEST.set('randomstuff',_.str(_.int(ts)))"> <IMG SRC="/Images/myimage_gif?<dtml-var randomstuff>"> This won't help you if you're going to render the Image directly, the usual: <dtml-with Image><dtml-var "myimage_gif.tag(randomstuff)"></dtml-with> just isn't going to work. If anyone knows how to append such a string with the Image.tag method, please let us know :) This is the only "simple" workaround I'm aware of to address this issue. - Ian C. Blenke <icblenke(a)2c2.com>

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ZMySQL Database Adapter - got binary ?
by Darcy Clark 18 Oct '99

18 Oct '99

does anyone have a compiled binary version of the ZMySQL Database Adapter ? I am running Mandrake (essentially RedHat 6.1), but am still new to Linux - I tried to compile the ZMySQLDA source, but it looks like I didn't install the necessary libraries when I installed linux....I will install the C libraries and try again, but in the meantime, I would really like to start playing with Zope and MySQL. thanks, Darcy -- --------------------------------------------------- Ph: (734) 764 3377 Email: darcyc(a)engin.umich.edu URL: http://www-personal.engin.umich.edu/~darcyc/ --------------------------------------------------- 'If you're not part of the solution, you're part of the precipitate' ..... Steven Wright

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KM|NetNews
by Anders Gaarsdal Holst 18 Oct '99

18 Oct '99

Hallo! Anyone knows where I can download KM|NetNews? I have tried looking on "www.zope.org" without results. Regards, A n d e r s G a a r s d a l H o l s t

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Re: [Zope] Zope.org performance
by Jeff Rush 18 Oct '99

18 Oct '99

I see such large amounts of memory here as well -- when I have a 60M database and just two users (it's our demo machine). The OODB contains 30 directories of 20 files each of 100 KB text. When we fire up /manage and peek into one of those dirs, <wham> up goes the load, until I restart the server and then it drops down to nothing. Oddly, accessing the site via FTP seems to place little load, so I presume the Zope persistence mechanism is reading into memory the entire content of each 100 KB object, just to present it in a list on the manage screen. (?) We're looking at switching to placeholder Zope objects and storing the text as static web files outside Zope. -Jeff Rush On Tue, 19 Oct 1999 02:16:49 +1000, Ben Leslie wrote: >Whilst my site is not get huge amounts of hits (yet :). I have been needing >to suck the content from using wget. >When I do however my system really starts to thrash badly and checking the >top output I get this: > ><snip> MEM CPU% MEM% >30200 www-data 6 0 60328 56M 872 R 0 13.2 45.5 1:40 python >30212 www-data 0 0 60328 56M 872 S 0 0.0 45.5 0:00 python >30213 www-data 4 0 60328 56M 872 R 0 9.0 45.5 3:11 python >30214 www-data 1 0 60328 56M 872 S 0 10.4 45.5 3:09 python >30215 www-data 8 0 60328 56M 872 R 0 18.7 45.5 3:01 python >30216 www-data 10 0 60328 56M 872 R 0 19.1 45.5 3:14 python ><snip> > > >My site is only medium size (~200 pages, 16MB), however as you see it seems >to use a fiar bit of memory, is it normal for it to use so much memory even >thought my data.fs is 16mb (packed).

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Q: Largest Zope Site in Production
by James W.Y.F. Chan 18 Oct '99

18 Oct '99

Hello Zope-List, I've been playing around with Zope and Squishdot for about a month now. I really like Zope (and squishdot, of course). I like to use Zope for larger and more interactive websites. Something along the line of e-commerce transactions or web-based training. My question to the Zope list is: has anyone been using Zope for sites where there are more than 100 "users" or "requests" per day? What about 1000? 10,000? 100,000? I'm using the term "users" loosely here. Ideally I would like to see sites that allow users to enter into website through authentication and change, say, their profiles -- much like what the current Zope.org site is allowing people to do. You can also interpret "users" as "requests". I'm simply wondering how Zope is coping with sites that have high traffic (hardware, memory, Linux). Thanks, -james-

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Subject: [Zope] Disabling buttons
by Kevin Howe 18 Oct '99

18 Oct '99

>I'm taking over an app that uses a bunch of client side Java. The only >reason I can see it uses Java is because it allows you to build logic >like "if this radio button is selected, this checkbox is disabled." If >there was a way to do this in a combination of DTML and Javascript then >the app could use just those technologies. Has anyone got a demo of >something like that? I can think of fairly convoluted ways to do it -- >is there a straightforward way? > Paul Prescod Hi Paul, this can easily be done using HTML 4.0 and Javascript. In HTML 4.0, form elements have a new property "DISABLED" which does just that. Since Javascript has access to all form properties, it is easy to create a Javascript which says "if this radio button is selected, this checkbox is disabled." If you'd like examples I remember seeing several tutorials on www.javascripts.com . Below is a simple form with some DISABLED elements in it. Example Form - a DISABLED selectlist and a DISABLED checkbox. ------------------ <html> <form> Diabled Select: <select name=SELECT DISABLED> <option>a <option>b <option>c </select> Disabled Check: <input type=checkbox name=CHECK DISABLED> </form> ------------------

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MEDUSA Performance
by Mauricio Souza Lima 18 Oct '99

18 Oct '99

Hi all, Like many peoples, i'm about to put a whole zope2 site in the web, and this site will be very visited, and i want to know if the medusaweb server is or isn't a good choice. The question is, can i put a big site in the medusa? By!

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Problem creating navigation bar
by David C. Morrill 18 Oct '99

18 Oct '99

This has probably already been covered many times before, but my scan of the mailing list didn't turn up anything, so here it comes again... I want to build a navigation bar for a folder with each sub-folder having a certain property (e.g. 'isMenu') defined creating a link in the nav bar (i.e. sub-folders without the 'isMenu' property being defined should not be in the nav bar). Seems pretty simple so far. When a sub-folder is selected, I want it to display the same nav bar as the parent folder to allow navigation within this section of the site. The problem is that the nav bar for the sub-folders do not show any items at all (because their PARENTS[0] is not the same as for the parent folder). I've tried a lot of different things (too numerous to list here), but in all cases the acquisition logic defeated my attempts to solve it. I finally got it to work by using the following: <dtml-if "PARENTS[0].id == 'rootFolder'"> <dtml-call "REQUEST.set('root',PARENTS[0])"> <dtml-else> <dtml-call "REQUEST.set('root',PARENTS[1])"> </dtml-if> <dtml-in "root.objectValues(['Folder'])"> <dtml-with sequence-item only> <dtml-if "_.has_key('isMenu')"> ...<dtml-var id>... </dtml-if> </dtml-with> </dtml-in> The thing I don't like is having to test explicitly for the name of the root folder in the top line, since it prevents me from using the same DTML in some other part of the site. Does someone have a suggestion for a better way of doing this whole thing? Dave Morrill

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