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[New User]: Investigating Zope...some preliminary questions
by Vaibhav Goel 07 Sep '00

07 Sep '00

Hi all: I am currently investigating Zope as a possible "tool" to use for building the back end "engine" for several projects for our company. Some of the sites we are currently doing involve E-commerce, news, etc. It is definitely a very powerful system and I think I have not even scratched the surface. I tried the QuickStart (ZAcme) tutorial and got a feel for whats involved. A few questions came to my mind and maybe I am not getting the "right picture" so to say but I would very much appreciate if someone could take the time to answer these: 1. If we were to go ahead and start using Zope as a "back-end engine" to build websites, basically a team of 3-4 people would be involved. Do they have to have knowledge of Zope? For example, I am the back-end guy....creating, programming the middle tier code for database access and what not. The guy who does the front-end (ie html code, layout ) and graphics guys are not very technical. How will I go about "importing" the front end code within Zope? Are there any modules for DreamWeaver etc (Windows based tools) that integrate with Zope? 2. What about stuff like importing legacy websites? For example, our main website is built using ASP running IIS. I was planning to recode it all in PHP + MySQL. Are there any "straight forward" ways to migrate legacy stuff easily? Again, please accept my apologies if this stuff is covered in the documentation somewhere. So far, I have gone through the Zope Content Manager guide and did not see any details about these questions there. I am in the process of browsing through the mailing list archives and I am sure I will find a lot of info there. Any tips and suggestions are highly appreciated. Regards, VG -- Vaibhav Goel ~ IcelandComplete | vg(a)icelandcomplete.is GSM: +354 695 6125 | http://www.icelandcomplete.is Office Phone: +354 553 9600 | Grensasvegur 7 Fax: +354 553 8608 | 108 Reykjavik, Iceland

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RE: [Zope] ZODB How To please HELP
by Farrell, Troy 07 Sep '00

07 Sep '00

Could you send the SQL you used? Also, what platform and Database are you using? > -----Original Message----- > From: Norman Khine [mailto:khine@bmpublications.co.uk] > Sent: Thursday, September 07, 2000 7:05 AM > To: zope(a)zope.org > Subject: [Zope] ZODB How To please HELP > > I am trying to follow the How to on ZODB How To, but I get stuck at the > point of when testing the sqlInsertProduct > When I submit the query I get the following error > > Error, exceptions.SyntaxError: unexpected token sequence.near :: > '_weight)\012VALUES'*'\012widget,\012Histor' > ******************************* current state = 141 expects: '(', > ('nomatch1',) current token = ((-8, 'user_defined_name'), 'WIDGET') > > SQL used: > Could not render the query template! > > Please help > > Thanks > > Norman

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RE: [Zope] Python, persistent objects and caching
by Brian Lloyd 07 Sep '00

07 Sep '00

> I'm developing a Python-based product that uses persistent objects in > ZODB to store its configuration. No surprises there, but my product is > also using volatile attributes to do a bit of caching of its own. The > thing is, when ZODB takes a sweep every 60 seconds to flush it's own > cache it will quite often flush my product as well, essentially > rendering my 15 minute caching ineffective. > > If there a way I can prevent this from happening? > > References: > http://www.zope.org/Members/MikeP/volatile > http://www.zope.org/Members/Zen/tips/VolatileAttributes > > Soren Roug One approach would be to cache your data in the module's namespace. For ex: mycache={} class MyClassThatKeepsGoingAway: ... def get_data(self, id): if mycache.has_key(id): return mycache[id] else: ... Note that my example is a little contrived, since using a module variable means that you will have to implement this in a way that is safe for a multi-threaded environment. You will also want to make sure that your module-level cache doesn't grow forever and take up a lot of memory. Hope this helps! Brian Lloyd (brian(a)digicool.com)

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ZClass base classes
by Nick Trout 07 Sep '00

07 Sep '00

I've looked all throught docs but I cant find anywhere an explanation of what properties the ZClass base classes give you. Also which order to inherit them, as the Developers Guide claims the order is important. Can anyone please enlighten me? Regards, Nick.

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Portal Toolkit and NTUserFolder
by neeloy_saha 07 Sep '00

07 Sep '00

Hi all, Can anybody tell me how to integrate the NTUserFolder and the portal toolkit -neeloy

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generate static html to webserver?
by Torsten Eymann 07 Sep '00

07 Sep '00

Hello, I want generate a static site from zope-folder and his subfolders to put that on an really-internet-server. Can I do that? How? thanks torsten

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ZODB How To please HELP
by Norman Khine 07 Sep '00

07 Sep '00

I am trying to follow the How to on ZODB How To, but I get stuck at the point of when testing the sqlInsertProduct When I submit the query I get the following error Error, exceptions.SyntaxError: unexpected token sequence.near :: '_weight)\012VALUES'*'\012widget,\012Histor' ******************************* current state = 141 expects: '(', ('nomatch1',) current token = ((-8, 'user_defined_name'), 'WIDGET') SQL used: Could not render the query template! Please help Thanks Norman

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Python, persistent objects and caching
by Soren Roug 07 Sep '00

07 Sep '00

Hi, I'm developing a Python-based product that uses persistent objects in ZODB to store its configuration. No surprises there, but my product is also using volatile attributes to do a bit of caching of its own. The thing is, when ZODB takes a sweep every 60 seconds to flush it's own cache it will quite often flush my product as well, essentially rendering my 15 minute caching ineffective. If there a way I can prevent this from happening? References: http://www.zope.org/Members/MikeP/volatile http://www.zope.org/Members/Zen/tips/VolatileAttributes Soren Roug

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Zope 2.2.1 Solaris 8 dumps core
by Michele Ravani 07 Sep '00

07 Sep '00

Hi I've downloaded the src of Zope 2.2.1 on my UltraSparc running Solaris 8, built it ok, but when I try run ./start it it dumps core with a segmentation fault. Is this problem known? Anything I can do? I am completely new to both Python and Zope ... Thanks Michele ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ #0 initExtensionClass () at ./../Components/ExtensionClass/ExtensionClass.c:3508 3508 ECTypeType.ob_type=&PyType_Type; (gdb) where #0 initExtensionClass () at ./../Components/ExtensionClass/ExtensionClass.c:3508 #1 0x28ddc in _PyImport_LoadDynamicModule (name=0xefff310b "ExtensionClass", pathname=0xefff2c10 "/home/michele/Projects/Zope-2.2.1-src/lib/python/ExtensionClass.so", fp=0xb2fc0) at ./importdl.c:851 #2 0x26ee4 in load_module (name=0xefff310b "ExtensionClass", fp=0xb2fc0, buf=0xefff2c10 "/home/michele/Projects/Zope-2.2.1-src/lib/python/ExtensionClass.so", type=3) at import.c:1210 #3 0x27cf0 in import_submodule (mod=0x9f1dc, subname=0xefff310b "ExtensionClass", fullname=0xefff310b "ExtensionClass") at import.c:1755 #4 0x27870 in load_next (mod=0xe6100, altmod=0x9f1dc, p_name=0xefff310b, buf=0xefff3100 "ZPublisher.ExtensionClass", p_buflen=0xefff30fc) at import.c:1607 #5 0x2742c in import_module_ex (name=0x0, globals=0x185428, locals=0x185428, fromlist=0xe78e0) at import.c:1445 #6 0x275cc in PyImport_ImportModuleEx (name=0x1a2004 "ExtensionClass", globals=0x185428, locals=0x185428, fromlist=0xe78e0) at import.c:1489 #7 0x48dd8 in builtin___import__ (self=0x0, args=0x185ba0) at bltinmodule.c:65 #8 0x1e1d4 in call_builtin (func=0xb45b0, arg=0x185ba0, kw=0x0) at ceval.c:2359 #9 0x1e0a0 in PyEval_CallObjectWithKeywords (func=0xb45b0, arg=0x185ba0, kw=0x0) at ceval.c:2324 #10 0x1c574 in eval_code2 (co=0x1a2570, globals=0x0, locals=0x185428, args=0x0, argcount=0, kws=0x0, kwcount=0, defs=0x0, defcount=0, owner=0x0) at ceval.c:1445 #11 0x1a390 in PyEval_EvalCode (co=0x1a2570, globals=0x185428, locals=0x185428) at ceval.c:324 #12 0x26210 in PyImport_ExecCodeModuleEx (name=0xefff42c0 "ZPublisher.BaseRequest", co=0x1a2570, pathname=0xefff38e0 "/home/michele/Projects/Zope-2.2.1-src/lib/python/ZPublisher/BaseRequest.pyc") at import.c:485 #13 0x26744 in load_source_module (name=0xefff42c0 "ZPublisher.BaseRequest", pathname=0xefff38e0 "/home/michele/Projects/Zope-2.2.1-src/lib/python/ZPublisher/BaseRequest.pyc", fp=0x1a2570) at import.c:724 #14 0x26eb4 in load_module (name=0xefff42c0 "ZPublisher.BaseRequest", fp=0xb2fb0, buf=0xefff3dd0 "/home/michele/Projects/Zope-2.2.1-src/lib/python/ZPublisher/BaseRequest.py", type=1) at import.c:1202 #15 0x27cf0 in import_submodule (mod=0xe6100, subname=0xefff42cb "BaseRequest", fullname=0xefff42c0 "ZPublisher.BaseRequest") at import.c:1755 #16 0x2781c in load_next (mod=0xe6100, altmod=0x9f1dc, p_name=0xefff42cb, buf=0xefff42c0 "ZPublisher.BaseRequest", p_buflen=0xefff42bc) at import.c:1603 [...]

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RE: [Zope-dev] date formatting / extracting substrings
by Chris McDonough 07 Sep '00

07 Sep '00

Hi Jeff, (I've moved this to the Zope list out of Zope-Dev) <dtml-let month_value="MonthID[4:]"> ... do something with the result ... </dtml-let> Have a look at the Python documentation as it relates to "slicing". > -----Original Message----- > From: Jeff Nielsen / Ugo Fast [mailto:Jeff@UgoFast.com] > Sent: Thursday, September 07, 2000 1:10 AM > To: Zope-Dev@Zope. Org > Subject: [Zope-dev] date formatting / extracting substrings > > > Hello out there in Zope world! > > Again, I'm completely baffled by Zope and the docs are no > help either. I'm > trying to take an input of a date in the form YYYYMM as the > variable MonthID > and create a string in the form Month, YYYY as a variable > named MonthName. > For instance, a MonthID of 200009 should return a MonthName > of "September, > 2000". > > I've been looking in the docs and the emails, but I can't > figure out how to > extract substrings. I think something like this should work > to seperate the > month value from the MonthID, but it doesn't: > > <dtml-call "REQUEST.set('MonthValue', _.substring(MonthID,5,2))"> > > Any guidance would be appreciated. > > ----------------------- > Jeff Nielsen > http://www.UgoFast.com/ > "Where U Go Fast" > > > _______________________________________________ > Zope-Dev maillist - Zope-Dev(a)zope.org > http://lists.zope.org/mailman/listinfo/zope-dev > ** No cross posts or HTML encoding! ** > (Related lists - > http://lists.zope.org/mailman/listinfo/zope-announce > http://lists.zope.org/mailman/listinfo/zope ) >

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