May 2001 - Zope - Zope lists

Re: Product Creation and Permission]
by Jason Joy 04 May '01

04 May '01

I also found this interesting. In a regular vanilla DTML document, if you put this in: <dtml-var "REQUEST['AUTHENTICATED_USER']"> You'll get something like this back: jj However, in method B of my Product, when it goes to the index_html for the product, and I put in the above, I get this back: Site Error An error was encountered while publishing this resource. exceptions.TypeError Sorry, a site error occurred. Traceback (innermost last): File /usr/local/Zope-2.3.2/lib/python/ZPublisher/Publish.py, line 223, in publish_module File /usr/local/Zope-2.3.2/lib/python/ZPublisher/Publish.py, line 187, in publish File /usr/local/Zope-2.3.2/lib/python/ZPublisher/Publish.py, line 171, in publish File /usr/local/Zope-2.3.2/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: index_html) File /usr/local/Zope-2.3.2/lib/python/ZPublisher/Publish.py, line 112, in call_object (Object: index_html) File /usr/local/Zope-2.3.2/lib/python/App/special_dtml.py, line 127, in __call__ (Object: index_html) File /usr/local/Zope-2.3.2/lib/python/DocumentTemplate/DT_String.py, line 538, in __call__ (Object: index_html) File /usr/local/Zope-2.3.2/lib/python/DocumentTemplate/DT_Util.py, line 334, in eval (Object: REQUEST['AUTHENTICATED_USER']) (Info: REQUEST) File <string>, line 0, in ? File /usr/local/Zope-2.3.2/lib/python/DocumentTemplate/DT_Util.py, line 161, in careful_getitem TypeError: sequence index must be integer Which I think is directly related to what I am experiencing with getting the manage_main. Jason > The other thing I now notice is that you are mixing the old security > model with __ac_permissions__ with the new one "classSecurityInfo". > > This is likely confusing Zope. Drop the __ac_permissions__ stuff. > > -- > | Casey Duncan > | Kaivo, Inc. > | cduncan(a)kaivo.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 ) ____________________________________________________________________ Get free email and a permanent address at http://www.netaddress.com/?N=1

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Session scoped variables
by Tommy Johnson 04 May '01

04 May '01

Ok, now I have another question. How do you maintain state within Zope? I'm particularly interested in session scoped variables. Currently I'm trying to learn Zope by building an e-commerce application, and in all other languages, (ASP, ColdFusion, etc...) you have session scope available to you in order to track individual users, their individual shopping carts, customer info, etc. I haven't been able to find anything yet for Zope. It isn't something like SESSION.(whatever) is it? Also, does anyone know of a place that may have working examples of things of this nature. I'm thinking of publishing something like that (trials, discoveries, obstacles, how I solved them, and the like) after I complete this application. If I had something like that, it would benefit me greatly, so if there isn't anything out there ... Thanks in advance, Tommy _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com

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SybaseDAv2
by Mike Thompson 04 May '01

04 May '01

Hello, We are using the Zope - Sybase DA (SybaseDAv2) to interface multiple application servers to a Sybase 11.9.2 backend server. Both are running Redhat 6.2. Periodically, the database connection is being lost on one or more of the application servers. When this happens, the DA database connection cannot be re-established until zope is restarted. Any requests made give the error '<method> is not connected to a database'. Access is no problem with the isql client from the same machine. It seems to me that the DA is getting into a state where it is blocking db requests for some reason. Has anyone else seen this type of behavior? Is there a fix or workaround? Thanks in advance, Mike Thompson Hilgraeve Inc.

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TinyTablePlus: get next row?
by Marcus Schopen 04 May '01

04 May '01

Hi, is there a possibility to get the next row? Thank you Marcus

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Apache/Zope: methods for serving high traffic?
by sean.upton＠uniontrib.com 04 May '01

04 May '01

Hey all, I need some deployment advice. After 2 years of doing relatively small stuff in Zope - mainly low volume apps, intranet stuff - I am at a point where a very high-traffic-volume application is about to be deployed, and I am left wondering what the best means of web-server integration is for high-traffic applications? In a nutshell, here is my set up: traffic comes in through a layer 4 load-balancer that directs traffic to 2 squid http accelerators (Sun E250s + 1GB RAM + Debian/Sparc/Linux 2.4), which proxy (with a simple perl script as a redirector or poor person's load balancer) to a farm of two web servers (VA Linux 1220 PIII/800 1CPU 512MB), which are running Apache and will be running Zope using Client storage. I have a temporary database sever that is a Sun Netra T1 105 (UltraSparc IIe 440MHz, 256MB, 10kRPM LVD SCSI disks, Debian unstable), and will acting in temporary capacity as a ZEO ZSS using FileStorage. Zope will be running using a VHM for virtual hosts. The initial application running on Zope for our site is going to be an online Classified Ad system; we are a Top 20 newspaper in a sizeable market with a lot of traffic; classifieds is a good chunk of our Monday traffic, and our app needs to scale to anticipate traffic of up to 50,000 page views an hour, all served from Zope, with about 3/4 of all page views being a ZCatalog query (search or browse, everything is done with a catalog). So, with perhaps 37,000 catalog queries an hour (or 10-15/sec), I want to make sure I set up my infrastructure to handle this. I feel that the CPU usage associated with the queries will be handled by our 2 new web servers just fine. I'm going to be setting up a cache manager for my entire site hierarchy, so I also am comfortable with the idea that all my images will be cached on the Squid boxes in front of the servers. I still have a few questions remaining in my head: 1 - Will my temporary ZSS box handle this (1CPU, 256MB)? The ODB will likely contain at most, 20,000 small object instances, most of which are subclassed from OFS:Folder. My more permanent ZSS box is a Sun E450 with 1GB Ram that will be running Linux, and I'm sure that that will be an improvement, but that box is being used for something else, and isn't available now. 2 - How do catalog queries get cached in the cache managers? Is it likely that a simple query (like 'browsing' a section of ads through a catalog query) will be cached? If I was to guess, I would think that 1/3 of all traffic is likely going to be esoteric searches that are not really useful to cache. 3 - So far, I can think of 3 ways to present my Zope apps to the public: a. [REQUEST]->(LOADBALANCER)->(SQUID+REDIRECTOR)->(APACHE)->(ZSERVER) b. [REQUEST]->(LOADBALANCER)->(SQUID+REDIRECTOR)->(APACHE)->(PCGI)->(ZOPE) c. [REQUEST]->(LOADBALANCER)->(SQUID+REDIRECTOR)->(ZSERVER) I am included to do c, but if that doesn't work out, what is anyone's experience working with a vs. b (in terms of PCGI vs. PROXY to ZServer)? Any feedback would be REALLY appreciated. One I get this in place, I would be happy to reciprocate with advice for anyone else in a similar situation... Thanks, Sean ========================= Sean Upton Senior Programmer/Analyst SignOnSanDiego.com The San Diego Union-Tribune 619.718.5241 sean.upton(a)uniontrib.com =========================

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RE: [Zope] Getting an object from id
by Etienne Labuschagne 04 May '01

04 May '01

I have used the following method successfully: parameter passed: objectId folder where I must retrieve the object with the name id from: fooFolder I use the following code: o = self.fooFolder.restrictedTraverse(objectId) This works in a Python Method (the one where you type the Python code in the browser) and is probably a valid way to do it. If there are still better ways, let me know! Etienne -----Original Message----- From: Etienne Labuschagne [mailto:etiennel@geospace.co.za] Sent: Friday, May 04, 2001 1:32 PM To: Zope user list (E-mail) Subject: FW: [Zope] Getting an object from id Hi there It is the object that is reffered to as a Python Method in the add box of the management screen. In simple terms, the one where you write the Python code in the browser window and not as an external .py file in the extensions dir. Regards Etienne -----Original Message----- From: Chris Withers [mailto:chrisw@nipltd.com] Sent: Friday, May 04, 2001 12:59 PM To: Etienne Labuschagne Cc: Zope user list (E-mail) Subject: Re: [Zope] Getting an object from id Etienne Labuschagne wrote: > > This causes an AttributeError type with value validate. This probably mean > that this way of aquiring an object is not available in Python Methods, but > only in external Python Methods. I would prefer to use a Python Method and > not an external method. Do you mean Python Method or Python Script? cheers, Chris _______________________________________________ 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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FW: [Zope] Getting an object from id
by Etienne Labuschagne 04 May '01

04 May '01

Hi there It is the object that is reffered to as a Python Method in the add box of the management screen. In simple terms, the one where you write the Python code in the browser window and not as an external .py file in the extensions dir. Regards Etienne -----Original Message----- From: Chris Withers [mailto:chrisw@nipltd.com] Sent: Friday, May 04, 2001 12:59 PM To: Etienne Labuschagne Cc: Zope user list (E-mail) Subject: Re: [Zope] Getting an object from id Etienne Labuschagne wrote: > > This causes an AttributeError type with value validate. This probably mean > that this way of aquiring an object is not available in Python Methods, but > only in external Python Methods. I would prefer to use a Python Method and > not an external method. Do you mean Python Method or Python Script? cheers, Chris

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Fwd: Re: [Zope-dev] Zope Server hanging :-( - Implement timeout
by J�lio Dinis Silva 04 May '01

04 May '01

>From: Chris Withers <chrisw(a)nipltd.com> >To: JXlio Dinis Silva <juliodinis(a)hotmail.com> >Subject: Re: [Zope-dev] Zope Server hanging :-( >Date: Fri, 04 May 2001 11:36:06 +0100 > >JXlio Dinis Silva wrote: > > > > I've implemented on my running zopes the timeoutsocket.py module > > http://www.timo-tasi.org/python/timeoutsocket.py > > -copy timeoutsocket.py to your zope home > > -on bottom of z2.py call, before the "# Start Medusa, Ye Hass!", > > > > import timeoutsocket > > timeoutsocket.setDefaultSocketTimeout(120) > > > > and after that any script you have that uses a httplib, smtplib, etc > > only runs for 120 seconds in case it falls into zombie, off course > > you can tune this period of time according to your needs. > >wow... thanks, this could be really really useful :-) > >Chris _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.

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Getting an object from id
by Etienne Labuschagne 04 May '01

04 May '01

Hi there If I have the id of an object, how can I get the actual object in a Python Method? I have tried the following: o = getattr(self, "FooImage") This causes an AttributeError type with value validate. This probably mean that this way of aquiring an object is not available in Python Methods, but only in external Python Methods. I would prefer to use a Python Method and not an external method. B.T.W. I know that o=self.FooImage will work, but I want to use a parameter containing the id to get the object, eg. o = getattr(self, id). Thanks Etienne

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RE: [Zope] Uploading images - no image!
by Etienne Labuschagne 04 May '01

04 May '01

Yes, but even if I change that to image/jpeg it still doesn't show - I'll double check. Etienne -----Original Message----- From: Peter Bengtsson [mailto:mail@peterbe.com] Sent: Friday, May 04, 2001 11:18 AM To: Etienne Labuschagne Cc: zope(a)zope.org Subject: Re: [Zope] Uploading images - no image! Do you have enctype="multipart/form-data" ??? ----- Original Message ----- From: "Etienne Labuschagne" <etiennel(a)geospace.co.za> To: "Zope user list (E-mail)" <zope(a)zope.org> Sent: Friday, May 04, 2001 9:32 AM Subject: [Zope] Uploading images - no image! > Hi there > > The Python Method (not external Python Method!) below must upload an image > after being given the id, title and filename (on the client computer). This > should work the same way as the management interface based image uploading. > Somehow, this function causes the image to be created, but is seems to > contain no image data (you cannot view the image). What am I doing wrong? > > > (self is passed as the only parameter. id, title and file are set in the > calling form) > > id = self.REQUEST['id'] > title = self.REQUEST['title'] > file = self.REQUEST['file'] > > self.manage_addProduct['OFSP'].manage_addImage(id,file,title) > > return "Your image is uploaded." > > _______________________________________________ > 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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