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working with datetime
by Leichtman, David J 28 Jul '00

28 Jul '00

Is there an easy way to increment the month or year of the DateTime object? Adding a numeric value increments the day. Incrementing the year is easily doable, but incrementing the month is significantly more difficult. So I'm just curious if there's a function that will actualy modify the parts of a DateTime object, or something way that I'm not thinking of to easily increment the month.

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Zope on Linux - Oracle 7.3 Solaris connect question... ZOracleDA how to compile? compile?
by Chris Beaumont 28 Jul '00

28 Jul '00

Zelp! (: I have a Linux based Zope installation that I need to connect up with a copy of Oracle 7.3 Workgroup Server running on a Solaris machine. I understand from a recent post that I will need to install Oracle client libraries for Linux in order for the ZOracleDA on the Linux box that is running Zope to compile- I don't have an older Oracle client for Linux, if indeed one was made.. (you can tell that I'm new to this here..) So...ta da... I have several newbie questions.. Obviously Oracle 7.3 is not the current rev. so... 1.) Can I use the current Linux version of the Oracle client to compile the ZOracleDA, then use that install to connect to Oracle 7.3 without errors? 2.) If I cant, does anyone have any suggestions on ways to solve this problem? 3.) Are there any particular caveats in considering this kind of configuration, or anything not covered in the docs.. I'm a relative newcomer to Zope, so *any* help is welcome and highly appreciated... Thank you very much... Chris Beaumont cbeaumon(a)msri.org

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Newbie question on page counters
by Richard P. Muller 27 Jul '00

27 Jul '00

I'm in the process of learning Zope hacking, and I'm having a really hard time getting a page counter to work. It isn't even that page counters are all that important to me, it's that I feel that if I can't even do something this simple, what hope do I have doing something really hard? Here's what I've done. (1) Under "Properties" I've created two properties (both ints) counter_starting_value, which I've set to 11 (arbitrarily) counter_value, which I've set to 0 (2) I then created a DTML method. I spent some time pouring through the DTML Reference, but I really didn't find a lot on how to modify variables. Here's what I tried: <dtml-if counter_value> <dtml-let counter_value = counter_value + 1> </dtml-let> <dtml-else> <dtml-let counter_value = counter_starting_value> </dtml-if> <dtml-var counter_value> This didn't work. The error message reported that the syntax in the first (and probably the second, but I never got past the first) dtml-let command was wrong. I also tried things like <dtml-var "counter_value=counter_value+1"> # got a syntax value for dtml-var here <dtml-var expr="counter_value=counter_value+1"> #same problem here. Is there an easy way to do this? Thanks in advance, Rick -- Richard P. Muller, Ph.D. rpm(a)wag.caltech.edu http://www.wag.caltech.edu/home/rpm

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Would you like to see Jim Fulton and Paul Everitt in Portugal?
by Hugo Ramos 27 Jul '00

27 Jul '00

ZopersORG team is organizing the ZWP2000 (Zope World Portugal 2000) event. So we're having a poll about Jim and Paul comming to Portugal in our main site: http://www.zopers.org We hope ZWP2000 is the first of many international Zope events in Portugal. It would be great to have Jim and Paul here for the first event but we really need to know how people feel about this... so please vote! For those who aren't portuguese here's the poll's translation: Would you like to assist an international Zope conference in Portugal? 1- Claro que sim (Yes! Of course) 2- Não (No) 3- Zope??? (hehe) 4- Sou surdo (I'm deaf) :-) We hope this can turn into a really big event!!! ===== Hugo Ramos - hugo(a)zopers.org ZopersORG - http://www.zopers.org ===== Do not meddle in the affairs of programmers, for they are easy to annoy, and have all the source code!!!

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FindOneOf?
by Mabe, Brad 27 Jul '00

27 Jul '00

ColdFusion (I know, a dirty word ;-) ) has a nifty string function called "FindOneOf" which returns the index of the occurrence of any character in a string. Example: FindOneOf("ghd", "abcdefghij", 1) Will return a "4" because "d" is the fourth letter in the string "abcdefghij". If no match is made, a 0 is returned. This is especially useful when building a change password form, because I can easily check to see that the new password contains at least one special character, upper case character, number, etc. Is there anything similar to FindOneOf in ZOPE? If not, does anyone have any hints on how I can go about doing this kind of thing through dtml or python? -=Brad=-

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Re: [Zope] Call of an SQL Method within a DTML document...
by Dieter Maurer 27 Jul '00

27 Jul '00

Vincent writes: > How can I call and SQL method within a DTML document (HTML code) ? Read the Z SQL Method Guide (zope.org -> Documentation). If you have more questions after that, the list will surely answer them. Dieter

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Re: [Zope] monitoring the zope-process with daemontools
by Dieter Maurer 27 Jul '00

27 Jul '00

Andy Pahne writes: > I have posted a few days ago that I have problems with my zope dying > suddenly. > > Someone suggested to use D. Bernsteins daemon-tools, not as a solution to my > problem, but helpful anyway. I made this tool working on my production > system, but there's one problem with it: as long as I start it by hand with > the command > svscan /service & > everything works fine. > > But when I start it automatically at boot time (through an entry in > rc.local) then Zope starts up as I wanted it to do, it gets monitored and > restarted again in case of a sudden death, but my DCOracle Database > Connection tells me "not connected" and when I try to open it, Zope dies. It seems that your environment is different for interactive start and start during boot. Remember, that Oracle requires a set of environment variables set, especially ORACLE_HOME. > I have trouble connecting to Oracle since month now, it never works as I > expect. Is there anybody out there having no problems with Zope and Oracle > databases? I'd really like to know that. We have little problems.... Beside something corrupting the heap. I do not yet know, what is to blame -- but maybe in a few days. Dieter

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Re: [Zope] Strategies to backup Zope?
by Dieter Maurer 27 Jul '00

27 Jul '00

Marcin Kasperski writes: > 1) Can I just backup Data.fs file (and expect that in case of failure I > can install zope as usual, copy backed up Data.fs over the installed > version, run and be happy)? This is a FAQ. Look into the list's archive. > 2) What can I do in case I wish to backup only part of Zope database > contents? In fact, I would like to run usual export on some folder - but > I want to do it from cron or sth. similar without employing web > interface. You can use "export/xmlexport" via ZClient. There is a HowTo at zope.org about how to control Zope via ZClient from cron. Dieter

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Re: [Zope] newbie DTML namespace
by Dieter Maurer 27 Jul '00

27 Jul '00

Brad Moulton writes: > I would like to build a table depending on some tests peformed on stuff > returned form a Z SQL method > > 1. I have a form with a name="spam" value="egs" > this value is passed onto next dtml document > --------------------------------- > table > <tr> > <td><dtml-var spam> <td> // displays 'eggs' to test spam is OK > </tr> > <dtml-var sqlstuff> // this does a join of two tables > <dtml-in sqlstuff> > <dtml-if {CAN'T WORK OUT SYNTAX TO ACCESS spam to compare with lets say > sqlstuff.spam} > <tr><td><dtml-var sqlstuff.column></td>....etc > </dtml-if> > </dtml-in> > ---------------------------------------------- Your problem is solved by renaming. You can either rename your DTML var or your SQL column result name: DTML var: <dtml-let myspam=spam>  <dtml-in sqlstuff> .... <dtml-if "myspam == spam">....</dtml-if> .... </dtml-in> </dtml-let> SQL column result name: select spam as sqlspam ... You now access the "spam" column under the name "sqlspam". I, regularly, use SQL column renaming. Dieter

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Re: [Zope] Re: [Zope-dev] Need for "aq_base" in DTML(was: Re: [Zope] Dumb DTML question - existance check of an object) question - existance check of an object)
by Dieter Maurer 27 Jul '00

27 Jul '00

Steve Alexander writes: > > * Existence check: "_.hasattr(object,what)" > > NOTE, that this is the sloppy part. > > > > - "_.hasattr" will return true, if "object" has > > attribute "what" (that is what we want) > > *OR* when it has acquired such an attribute > > (we do *NOT* want that here). > > > > What we would need is a DTML accessible version > > of "aq_base". This is trivially handled by > > an external method. > > Can you do this with the following in DTML? > > <dtml-with "PARENTS[-1]" only> > <dtml-if "_.hasattr(object, what)"> > ...stuff... > </dtml-if> > </dtml-with> It may work for "PARENTS[-1]" but it can not be generalized: The DTML namespace is essentially a stack of mappings. The "with" tag with the "only" attribute starts a new stack and pushes the object onto this new stack. Inside the "with", you will only see attributes of the object itself *or* attributes that the object acquired. This "or" is the problem. Acquisition and namespace stacking are orthogonal. You strip the namespace stacking with the "only" attribute (of the "with" tag), you strip the acquisition context with the "aq_base" attribute (of the object). Dieter

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