May 1999 - Zope - Zope lists

RE: [Zope-dev] complex zope applications
by Rob Page 21 May '99

21 May '99

> hi folks, Hi Scott! > i originally planned to use ASP, but couldn't find any tools i was > happy with. already a little behind, i gambled and decided to use > zope. not knowing any python, i went the DTML/SQL method > route. this part of the application is working well. I'm a little biased but if the application is complicated for Zope it would have been, um, MUCH more complicated with ASP.</$0.02> > here's the problem. the full (larger) scope of the project is now > becoming clear. to model all the data will probably require 18-20 > tables. working with the data will require 3 or 4 separate > applications. Aaahh, isn't that fun. Of course, before anyone told you the full scope of the project you'd committed (and they'd written down) cost and timeline objectives, right?! Incremental software requirements discovery is about as certain as the speed of light, no? :^) > any ideas on how to develop this in zope in a manageble way? the > first application is composed of a LOT objects: DTML input forms, > DTML form handlers, SQL methods, etc. i'm afraid if i keep going > this route things will spiral out of control. > > what seems like a better structure is 3 tier: python business > objects talk to (encapsulate) the database. zope controls the > business objects. the main reason i switched to zope is that it > seems like zope is set up for this. > > before i jump into this, is there anyone who has done something > similar? can you offer any advice or moral support? sorry for the > broad questions, but i guess i'm looking for feedback at a higher > level. over the next few months i'll have 1000s of more specific > questions :) Yes.. we've done some pretty complicated apps. We've also taken a fancy to modelling the apps with UML. The whole notion of Actors in a system provides a very nice functional decomposition and DRASTICALLY simplifies security. I'd suggest a main application folder with at least one subfolder for Actors. In the Actors folder create a subfolder for each Actor. \TrainingRegistry \UserFolder (for security on the app) \Actors \Trainer \TrainingManager \TrainingEventManager \TrainingLocationManager \AppAdministrator Odds are you'll have some SQLMethods like: o sqlSelectTrainers o sqlSelectTrainingEvents o sqlSelectTrainingLocations which will probably be used ALL over the app. Put those on the Actors folder -- that way you can use them (often overloaded with Acquired variables) in all of the Actor folders without duplicating them (ooh, baad). Another pattern that's been useful is (as shown above) to put the lookup table care-and-feeding functions in a separate folder (AppAdministrator). This person adds, edits, and deletes new Locations, Counties, etc.. Of course your analysis may show that a Trainer might also need to add a Location -- in that case put the forms in Actors and acquire them. IMNHO, the BEST way to model this is with a UML Use Case diagram (it connects Actors with Use Cases). The need to use/reuse/acquire methods jumps right out at you. Note that ZClasses will likely cause us to evolve this approach. HTH, Rob

1 0

statistics-n-nnn tags
by kent＠tiamat.goathill.org 21 May '99

21 May '99

From the DTML manual : variance-nnn : The variance of numeric values computed with a degrees of freedom equal to the (count - 1). variance-n-nnn : The variance of numeric values computed with a degrees of freedom equal to the count. standard-deviation-nnn : The standard deviation of numeric values computed with a degrees of freedom equal to the (count - 1). standard-deviation-n-nnn : The standard deviation of numeric values computed with a degrees of freedom equal to the count. So I try:  which works, however,  provides: Traceback (innermost last): File "<stdin>", line 1, in ? File "pedsys.py", line 218, in summary return HTML(html)(self) File "./DT_String.py", line 513, in __call__ File "/usr/pkg/zope/lib/python/DocumentTemplate/DT_In.py", line 678, in renderwob try: append(render(section, md)) KeyError: standard-deviation-2-EGO All statistics-n-nnn forms result in a key error regardless of how/ where I use them. Am I misreading the manual on how to use them? I'm running Zope 1.10.2 but I peeked at 1.11.0pr1 and saw that there have been no changes to DT_InSV.py between the two versions (1.10.2 and 1.11.0pr1). Thanks Kent

2 1

RE: [Zope] Copy database or part of database
by Rob Page 21 May '99

21 May '99

> Is it possible to copy the Zope database (or just a part, ie. from a > certain folder) of a Zope application to another Zope application? Yes, via files... not (yet?) through the web. Click Import/Export... --Rob

1 0

Copy database or part of database
by Tom Deprez 21 May '99

21 May '99

Hi, Is it possible to copy the Zope database (or just a part, ie. from a certain folder) of a Zope application to another Zope application? How? tom.

1 0

Zope 1 -> Zope2 import/export
by Chad McDaniel 21 May '99

21 May '99

I tried to copy my new project to from Zope 1 to Zope 2, but Zope 2 gives the error: ---  --- has anyone managed to get this to work? -- -chad

1 0

Needs some ammunition.
by Chad M. Townsend 21 May '99

21 May '99

My damn Art Director wants to use TeamSite by http://www.interwoven.com/, of course we're not. We are going to use Zope. I was wondering if anyone has had any experience with TeamSite so when I speak with them on the phone I can put them in their place. It seems all it is, is CVS with added work flow control. I don't have that much experience with Zope yet, does it have some sort of work flow control? Any help is as always, greatly appreciated. -chad

1 0

Re: [Zope] FYI: News from the front, part 2
by Chad McDaniel 21 May '99

21 May '99

Martijn Pieters <mj(a)antraciet.nl> writes: > At 13:53 21/05/99 , Robert O'Connor wrote: > >Is there a picture of the magazine cover on the net? > > > >-Bob OConnor bob(a)rocnet.com > >"May the source be with you." > >(Later today the whole family gets to see THE movie.) > > Yup: http://www.linux-magazin.de/ > > It looks like their new site is online. I understood from Thomas Riedl (the > author of the article) that the site is now running on Zope. That is to > say: he said they were converting, and I assume the new look means they are > done. > The easiest way to test is to just stick "/manage" at the end of any URL and see if it asks you to login. So, yep, it's running on Zope. -- -chad

1 0

Deleting an User through a link
by Alexander Schad 21 May '99

21 May '99

Hi! I want to provide a link in a html-page that deletes a certain out of the acl_users Folder. My idea was something like: <a href="acl_users/manage_delUser([])">delete User</a> but the syntax doesn´t seem to be correct. Any ideas? Bye Alex

1 0

RE: [Zope] Adding User Roles through Products
by Rob Page 21 May '99

21 May '99

> I am developing a product that uses roles to show certain content to > different people. > I am looking for a way to automatically add new user roles to my > products folder in zope when creating a new instance of that product. > Is there a way to do that and when how? <$0.02> Try calling manage_defined_roles from within the DTML. Of course, the calling doc will need a manage proxy role or permissions will break. I just checked the online help and manage_defined_roles didn't have great documentation so you might have to check the docs for necessary parameters or brute force it by sending a REQUEST. </$0.02> ** In general, a good way to research these questions is to look in Zope for what you want to do. In this case I looked at the Security tab of a Zope folder, Viewed Source and checked out just what happens when you add a role. In this case there is a FORM at the bottom of the Security screen whose ACTION is manage_defined_roles. I then took a look at the online help under Folder and looked for the method manage_defined_roles. Often there will be good documentation in the online object reference. When there isn't I can grep for manage_defined_roles in the sources to find out where and how the method is defined... In this case it turned up (among other things): o access.dtml - controls the look-and-feel of a folder's security tab o role.py which contains: def manage_defined_roles(self,submit=None,REQUEST=None): You can, with relatively little pain, read the source there and figure out what parameters it wants to do what you're after! The bit of "insider knowledge" that I added was that in order to call/use a manage* method you need the Manager role. Hope this helps... --Rob

1 0

Adding User Roles through Products
by Alexander Schad 21 May '99

21 May '99

---------- Forwarded message ---------- Date: Tue, 18 May 1999 15:41:43 +0200 (CEST) From: Alexander Schad <ags(a)beehive.de> To: zope(a)zope.org Subject: Adding User Roles through Products Hi! I am developing a product that uses roles to show certain content to different people. I am looking for a way to automatically add new user roles to my products folder in zope when creating a new instance of that product. Is there a way to do that and when how? Bye Alex

1 0