seaside June 2004

seaside@lists.squeakfoundation.org

30 participants
54 discussions

Start a nNew thread

lol
by ssastre＠seaswork.com.ar 19 Jun '04

19 Jun '04

i don't want your xxx pics!

1 0

2.3.2 ==> 2.5a: Session
by Marco Paga 18 Jun '04

18 Jun '04

Hi. I can't locate my session on the new 2.5 system. I tried to use WACurrentSession in any way I could think of but nothing worked. Thanks in advance marco

1 0

GOODS connection question
by John R. Pierce 17 Jun '04

17 Jun '04

> Avi wrote: > Well, it comes down to transactional concurrency vs. (for lack of a > better term) re-entrant concurrency. If you have 50 concurrent > sessions using the same connection and the same cache, suddenly you > have to worry about what happens if two users try to interact with the > same object from the database at the same time. We are using a GOODS database to manage our Seaside application data and have witnessed first hand what Avi was talking about except we experience real concurrency problems at 2 users (not 50). We did some testing and it is as Avi says you pretty much shouldnt share the same GOODS cache between Sessions unless you perform some sort of locking (yuck!). > If you have one connection and one cache per session, you only have to > deal with concurrency at well defined points, and in well-defined ways: > when each session commits. Yes, you use more memory, but the code is > much, much easier to write. Yep, this is the solution we settled on and it works quite well. Actually our application just opens a connection and gets objects whenever it needs them so we didnt even put a cache of objects in the session. I suspect if you design your GOODS database properly this will perform just fine (e.g. dont fetch 10,000 objects all the time just to get to the one you want). If you put the cache in the session, I wonder when WASession get collected? I wouldnt want the cache to live too long (my only concern). > One compromise in some situations would be to have one database that > was read-only or rarely written to, that had a connection shared among > all sessions, and another database with the more volatile data that had > a connection for each. We just shared one read-only connection to the same GOODS database that was held onto by the application for all sessions to use when it came to reporting. This seemed to provide a nice speed boost for our applications reporting function. Before using the connection we just called refresh to get the latest version of objects and this was much faster than starting with no cache. Just make sure not to use this connection for anything but reading. Regards, John

4 10

collecting docs
by Avi Bryant 17 Jun '04

17 Jun '04

Hi all, I've started a page at http://beta4.com/seaside2/docs.html to collect links to assorted Seaside documentation. If anyone has any links they think should be added to the docs page, let me know. My main concern is that the information be relatively current: I'm going to try to keep from linking to anything confusingly out of date. As a start, I updated the Seaside tutorial to work on 2.5 instead of 2.3. I'd like to especially mention the most recent two links on that page. One is a tutorial from C. David Shaffer on the configuration system: http://www.shaffer-consulting.com/david/SeasideConfiguration/ SeasideConfigurations.html The other is information from Brian Brown on using GOODS with Seaside: http://www.techgame.net/projects/Seaside/wiki/UsingGOODS Thanks to both of them for their work, and here's hoping for more user contributed tutorials in the future. Cheers, Avi

2 2

GOODS connection question
by Jason Dufair 16 Jun '04

16 Jun '04

In my "allowance" app, I naively have a Piggybank class>>database method where Piggybank is my model class. It does the following: database ^(Database isNil or: [Database isConnected not]) ifTrue: [Database := KKDatabase onHost: self dbHostName port: self dbPort] ifFalse: [Database] All model objects call the class side save method when they change: save self database commit After some time, I get walkbacks with proxy objects being unable to connect to the GOODS database. Avi, I remember you talking about tying the Seaside session to the GOODS session perhaps. Is this what I should do? How are other people maintaining connections to their GOODS databases? -- Jason Dufair - jase(a)dufair.org http://www.dufair.org/ "Every word is like an unnecessary stain on silence and nothingness." -- Beckett

5 8

Re: setting the charset
by Karel Zelnicek 16 Jun '04

16 Jun '04

On Tue, 15 Jun 2004, Avi Bryant wrote: > > On Jun 15, 2004, at 2:08 PM, Karel Zelnicek wrote: > > > Hi, > > I have two questions: > > > > 1) How can I tell the browser (e.g. opera or msie, not scamper) to use > > iso-5589-2 encoding for seaside produced pages ? I know that there must > > by some charset="..." statement in head, but how can I put it there ? > > > > 2) When I open the source for page produced by seaside, there is <?xml > > version="1.0" encoding="UTF-8"?> at the beginning of that page. What > > does > > it mean ? If I were succesful in setting the charset, wouldn't this > > setting (encoding="UTF-8") override it ? > > Which version of Seaside are you using? Both of your questions depend > on that somewhat. > > Avi > > Maybe Seaside2.5a3-avi.1

2 1

Image shutdown
by Marco Paga 14 Jun '04

14 Jun '04

Hi all. I want to run a Seaside Server on my Linux machine. I should not run 24x7 so it will have to be shutdown at the end of the work day. How can I notify squeak to quit without saving in a secure manner? regards marco ps: i added a GoodsRunner that can start up your favorite server on a *nix machine with OSProcesses. You should have a goods directory with goodsrv in a folder named goods under your squeak root.

1 1

mailto:
by Sebastián Sastre 14 Jun '04

14 Jun '04

Hi all, I was trying to add some #mailto: to the renderer but for some reason it does not work. Here is the code: WAAbstractHtmlBuilder>>mailto: aEmailAddressString subject: aSubjectString self document text: '<a href="'"> <mailto:',aEmailAddressString,'?subject=',aSubjectString,'> mailto:',aEmailAddressString,'?subject=',aSubjectString,'">'. This generates the code but the link is missing in the final rendered page. <a href="mailto:xxx@someserver.com?subject=uh?"> any idea of what is going on? there is a better way to implement it? best regards, Sebastián Sastre ssastre(a)seaswork.com.ar www.seaswork.com.ar <http://www.seaswork.com.ar/>

2 3

Dynamic bindings...howto?
by C. David Shaffer 13 Jun '04

13 Jun '04

I guess I mean "dynamically scoped variables." I'm trying to leverage KomService's dynamic variable binding support but I'm having problems. Before I waste an entire night on it I thought that I'd ask if anyone is using it successfully. I just want to make sure that I'm not going nuts. Anyway, here's what I'm doing...it seems simple enough: In the Kom services service for StarBrowser I stopped the server, picked "edit bindings" and then in the resulting inspector on an instance of DynamicBindings I evaluated: self at: #TestMyBinding put: 1234. started the server (it looks like the start method actually establishes the current set of bindings for a server) and then in my renderContentOn: for one of my components I added html text: #TestMyBinding binding printString. loaded the component in a fresh web browser window but the binding shows up as nil. I verified that the HttpService which is running does indeed have my bindings in it's bindings i-var. Searching the web for docs hasn't turned up much. I did play with manually clamping the bindings and that seems to work but I would like set of bindings for my running server (to use for configuration management). David -- C. David Shaffer http://www.cs.westminster.edu/~shaffer http://www.shaffer-consulting.com

3 10

2.5a5
by Avi Bryant 13 Jun '04

13 Jun '04

Hi all, I've just released Seaside 2.5a5 to SqueakMap. The changes are: - the recently introduced use of events for #answer: has been changed from a general facility to a pattern; which is to say, there's now a specific #handleAnswer: method on Decoration rather than #handleEvent:with:. It's certainly possible that we'll add more events in the future, but for now the generalized system smacked of YAGNI. - Callback processing has been improved. There most visible effect is the addition of a "cancel" callback as suggested by Rado; this means that you can render #cancelButtonWithAction:, and if it is the submit button used, the rest of the form submission will be ignored. There's also a different error if you omit a subcomponent from #children; rather than complaining at render time (which used ugly stack-walking hacks), it will complain during request processing if it ends up with callbacks that it can't match to a current child (this will also more accurately catch issues with the result of #children changing between response and request, per the recent thread started by Romain). And #defaultAction: on forms should work properly again. - I've also added support for "idempotent" action callbacks, for actions that could be executed any number of times without ill effect. Currently this is used by a new #anchorWithCallback:do: method, which is like #anchorWithAction:do: but won't have any automatic redirects during the course of the action - so browser reloads may cause the action to run again. It could also be used to support GET forms instead of the current POST forms, though there's no API for this yet. Some day we may also find a way to use it as a cue for search engines - it should be fine for a crawler to follow #anchorWithCallback: links but not #anchorWithAction: links. Incidentally, if someone can come up with a more revealing pair of names for those selectors, I'm open to suggestions. We're getting near to feature-complete; the last thing on my list for 2.5 is localization, so we're probably only a couple of releases from beta. So if you have comments on the way things have been going, speak now... Avi

2 3

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

seaside June 2004