October 2001 - Zope - Zope lists

Re: [Zope] Images and Acquisition
by marc lindahl 19 Oct '01

19 Oct '01

> From: "Tommy Johnson" <tommy(a)7x.com> > > Actually, I did that when I first started with zope, but have come to use > the other way. First, it allows me to drop the extension (which isn't > needed) and second, I don't have to specify an absolute path. Actually, it works with no extension or any extension, and you don't have to specify an absolute path in your DTML/HTML - the browser constructs it, which is nice for caching. > > Also, you can't use the power of acquistion when you do it the first way. Why not? It works for me... > That can be a major pain when you have different logos for different > sections of your site. First, you gotta name all the images different names > (even though they are logos - why can't 'logo' do?) and second, you have to > add code to distinguish where you are (what section) in order to display the > correct logo. > > That's not as elegant as simply saying <dtml-var Image_logo> If you say <img src="Image_logo"> then the browser requests /folder/folder/folder/Image_logo -- if it doesn't exist, then Zope traverses up until it finds one...

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Enqiures
by Benny Chua 19 Oct '01

19 Oct '01

Hi, Is there a installation guide? How stable compare to a Red Hat OS Web Server? Any minimium hardware requirement? Thanks Benny -- _______________________________________________ Talk More, Pay Less with Net2Phone Direct(R), up to 1500 minutes free! http://www.net2phone.com/cgi-bin/link.cgi?143

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RE: [Zope] Accessing site visitor's IP (solved!)
by sean.upton＠uniontrib.com 19 Oct '01

19 Oct '01

The same idea works for Squid or any other proxy, by the way. We use Squid instead of Apache for proxy, load-blancing, and URL rewrite services in front of our Zope servers, and we had to do this as well in our applications. Sean -----Original Message----- From: Timothy Wilson [mailto:wilson@visi.com] Sent: Friday, October 19, 2001 9:06 AM To: Zope listserv Subject: [Zope] Accessing site visitor's IP (solved!) Hi everyone, I posted several weeks ago trying to determine if there was a definitive method to retrieve the IP address of a visitor to my Web site. My real motivation was simply to determine if the visitor was browsing from our LAN or from outside our organization. A number of suggestions were made and there was some disagreement about how useful such a thing would be and if it was doable at all. I'm glad to report that it is doable--at least for my purposes. I ended up using an Apache module called mod_proxy_add_forward. This module adds an HTTP_X_FORWARDED_FOR header that contains the visitor's IP address even if your Zope if running behind Apache. If your visitor is on a NAT'ed network then you'll get the IP address of his or her proxy server. This works perfectly for me and since this module is available as a Debian package total installation time was less than one minute. (Gotta love apt-get!) I've written up a How-To at Zope.org describing it in more detail. It should be available at http://www.zope.org/Members/TWilson/GettingVisitorsIP. I would appreciate feedback on this How-To. Thanks for all the suggestions that have been made on this topic in the past couple weeks. They are very helpful. One final note: please don't use this for controlling access to your site. IP addresses are too easily faked. -Tim -- Tim Wilson | Visit Sibley online: | Check out: Henry Sibley HS | http://www.isd197.org | http://www.zope.com W. St. Paul, MN | | http://slashdot.org wilson(a)visi.com | <dtml-var pithy_quote> | http://linux.com _______________________________________________ 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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Python Product and Caching of Objects
by Sidnei da Silva 19 Oct '01

19 Oct '01

What classes i must subclass to make my python products cacheable? -- Sidnei da Silva X3ng Consultoria e Desenvolvimento Ltda. sidnei(a)x3ng.com.br

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Issues with frequently changing object properties
by Richard Ettema 19 Oct '01

19 Oct '01

Hi, Can someone clarify the good and bad with having an object property which changes often. i.e. Say a property used as a counter to record votes in a poll, or calls on an object to be displayed. I understand the bad part of a frequently changing property is it bloats the Zope data.fs (I assume this is caused by keeping a record for the Zope undo feature?). Are the only solutions to this issue: 1. Automate and pack the database daily (Is there reliability issues with this with corruptions more likely etc? ) Is this a common solution Zopists use? If so, what regular interval is the norm for packing? 2. Store any regularly changing value such as a counter in an external db like mysql (Which isn't very practical if you are talking lots of objects doing the same thing) Thanks for any info you can provide to clarify what I should be doing. Thanks Richard Ettema

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One big Zope or many small Zopes? Or perhaps a ZEO?
by Chris Muldrow 19 Oct '01

19 Oct '01

We ( a newspaper site) are currently running several different Zope installations for different vertical products--one install for our Homes Listings, for instance, and another for our big news content site, and a couple of testing and development installs. The sites share many of the same elements--both look-and-feel stuff as well as various navigation methods, etc. Does it make sense for us to combine all of these sites into one installation so we can centralize the shared site elements, or should we keep multiple sites for performance's sake? We're weighing the issues of doing some sort of XML-RPC resource sharing or just lumping everything together under one domain and one Zope installation. Also, we're running at traffic somewhere around 60,000-80,000 page views a day--not huge traffic, but more than we had a year ago, certainly. At what traffic point have most folks noticed a need for more server power? Is it 100,000 page views? More? Less? We are also serving ads to the Zopes from a different Windows 2000 server running Apache and using a PERL process to serve the ads at a rate of between 400,000 and 700,000 ads per day. We've got a pretty Zopish site--lots of method calls, lots of ZSQL (connected to MySQL), lots of graphics and buttons all in Zope and reliance on the Catalog for index building and such. We're on a single non-Zeo install for our "big site" right now on a Win2k box, and we're having some slowness issues cropping up at times. We've had some bigger Windows/Zope/Apache problems in the past, so we're already preparing for a move to Linux (plus that seems to be where most of the community and certainly where Zope Corp. is focusing--though I'm a big fan of MacZope, personally...) We're wondering whether we should be considering a ZEO move at this time, too. And now would be a good time for us to combine our "satellite sites" under one umbrella. Any opinions? Many probably think "just ZEO it" but we would like single box alternatives also. Thanks! Chris and the gang at fredericksburg.com cmuldrow(a)fredericksburg.com

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RE: [Zope] Images and Acquisition
by Meilicke, Scott 19 Oct '01

19 Oct '01

>From an earlier message: -----Original Message----- From: Laurie Nason [mailto:laurien@blake.3dem.bioch.bcm.tmc.edu] Sent: Thursday, October 18, 2001 11:49 AM To: Trevor Toenjes; Laurie Nason; Jerry Lake; zope(a)zope.org Subject: RE: [Zope] dtml-var question regarding images In that case you need to do the following <dtml-var "Images['ZacmeLogo.gif']"> hth Laurie <--snip--> ------------- So in your case it would be <dtml-var "Images.image1">, or <dtml-var "Images['image1.gif']"> if you have a dot extension on your image. Scott -----Original Message----- From: Gupta, Anu [mailto:Anu.Gupta@uk.wmmercer.com] Sent: Friday, October 19, 2001 7:12 AM To: 'zope(a)zope.org' Subject: [Zope] Images and Acquisition Hi all, Another newbie question - kinda following on from the earlier posts regarding images (although I guess it has more to do with acquisition). Folder Structure / /Images image1 /Folder1 index_html In the index_html in Folder1, how do I show image1 from the Images folder ?? Thanks in advance all ! anu *************************** IMPORTANT NOTE ************************** The above information is confidential to the addressee and may be privileged. Unauthorised access and use is prohibited. William M. Mercer Limited is regulated by IMRO and the Personal Investment Authority. Registered in London No. 984275 Registered Office: Telford House, 14 Tothill Street, London SW1H 9NB _______________________________________________ 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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Accessing site visitor's IP (solved!)
by Timothy Wilson 19 Oct '01

19 Oct '01

Hi everyone, I posted several weeks ago trying to determine if there was a definitive method to retrieve the IP address of a visitor to my Web site. My real motivation was simply to determine if the visitor was browsing from our LAN or from outside our organization. A number of suggestions were made and there was some disagreement about how useful such a thing would be and if it was doable at all. I'm glad to report that it is doable--at least for my purposes. I ended up using an Apache module called mod_proxy_add_forward. This module adds an HTTP_X_FORWARDED_FOR header that contains the visitor's IP address even if your Zope if running behind Apache. If your visitor is on a NAT'ed network then you'll get the IP address of his or her proxy server. This works perfectly for me and since this module is available as a Debian package total installation time was less than one minute. (Gotta love apt-get!) I've written up a How-To at Zope.org describing it in more detail. It should be available at http://www.zope.org/Members/TWilson/GettingVisitorsIP. I would appreciate feedback on this How-To. Thanks for all the suggestions that have been made on this topic in the past couple weeks. They are very helpful. One final note: please don't use this for controlling access to your site. IP addresses are too easily faked. -Tim -- Tim Wilson | Visit Sibley online: | Check out: Henry Sibley HS | http://www.isd197.org | http://www.zope.com W. St. Paul, MN | | http://slashdot.org wilson(a)visi.com | <dtml-var pithy_quote> | http://linux.com

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Security tab
by Magnus Heino (Rivermen) 19 Oct '01

19 Oct '01

Hi. My current Zope 2.4.1 install with CMF, Formulator, psycopg, ordered folder etc., has about 140 permissions on the security tab (manage_access). This is a HUGE problem in so many ways. Has anyone thought of a solution to this? /Magnus

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Zope email capabilities?
by Bryan Field-Elliot 19 Oct '01

19 Oct '01

I'm interested in Zope's email capabilitites, both incoming and outgoing. I imagine it's probably straightforward (e.g. there are some classes somewhere) for me to send an outbound email from my Zope application. However, I'm particularly curious about a way to accept and process inbound email. Specifically, I'm considering building a basic customer service application. Each Zope user will have a private folder, and whenever a user sends email to, say, "support(a)myzopeserver.com", I'd like for zope to store the user's email message in their Zope folder. I will probably wrap this inside of my own ZClass, so that I can add properties like "status" to indicate whether or not one of my staff has replied to the customer in regards to the given message. Ultimately I'll build some workflow around it. Thoughts would be appreciated. Bryan

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