seaside April 2003

seaside@lists.squeakfoundation.org

23 participants
46 discussions

Nearing 2.3
by Avi Bryant 08 Apr '03

08 Apr '03

Hi all, I'm putting up a 2.3a snapshot for evaluation at http://beta4.com/seaside2/downloads/Seaside2-3a.st. I made a number of fairly large changes recently, and I've been feeling antsy that they're only available to the (non-existant?) minority of users that track CVS. This code isn't totally complete, but please do try it out. The changes include: - HtmlRenderer now builds a DOM tree rather than directly printing HTML to a stream. This provides a greater amount of flexibility in various places, without (surprisingly) seeming to impact performance. A more minor change (stolen from Cees) is the ability to use either strings of blocks pretty much anywhere, ie, html bold: 'foo'. html bold: [html text: 'foo']. - The StateHolder mechanism has been generalized so that any object can be registered to have the values of its instance variables backtracked. For example, in WABrowser>>model:, you'll see self session registerObjectForBacktracking: model. This means that the state of the Browser instance will be snapshotted each time it changes, and using the back button in the web-based browser will have correct behavior. Component classes that previously used StateHolders for all (or most) of their instance variables can now simply register themselves for backtracking at #initialize time. Yes, this can eat memory quickly if abused. A "profile memory" link has been added to the toolbar to keep tabs on this. - The fairly complex Container model has been replaced with a much simpler notion of delegated components. Each component has a 'delegate' StateHolder. When a component is asked to #call: another component, it stores that component as its delegate. When the #call: returns, 'delegate' will be cleared. When asked to render itself, a component with an active delegate will forward the render request to the delegate. This means that a component will appear to be replaced, in place, by whichever component it calls. This behavior is roughly equivalent to having each child component created with #containerFor: in 2.2. The "inspect" link now presents a view of the current component tree, showing delegation, so that you can pick which component you want to inspect. This can be useful for understanding the new model. - The codebase has been massively restructured and more cleanly layered. Some semi-coherent notes: The "Base" layer consists of Request, Response, and a completely new URL handling mechanism, the WARegistry. This knows nothing about Sessions, but flexibly manages request handlers that map either to static urls or to unique, generated keys. If a unique key exists in the url but there is no active handler for it, the registry will fall back to the closest static handler. The "Session" layer adds continuations and state backtracking. It knows nothing about Components. The "Component" layer includes the delegation and embedding model. For now, it largely shields user code from the changes to the other layers (#registerAsApplication: still works, for example). It also includes all the development and configuration tools. The "Rendering" layer is mostly orthogonal to all of this; it provides the callback scheme and HtmlRenderer. Known issues: - The Wiki example is currently broken. - The new HtmlRenderer does not yet support pretty-printing. - Usage patterns for Application, Session, and Registry have to be more fully worked out (where does the current notion of preferences go? Is it still appropiate to subclass Session? etc).

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[FIX] SeasideServiceSyncToSeaside2.3
by Frank Sergeant 08 Apr '03

08 Apr '03

from preamble: "Change Set: SeasideServiceSyncToSeaside2.3 Date: 8 April 2003 Author: Frank Sergeant This updates WAKomNG in SeasideService package to work with Seaside 2.3. Note, this probably should not be applied if you are using an earlier version of Seaside. I copied WAKom>>process: to WAKomNG>>processHttpRequest:"!

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Re: WAKom not responding to requests
by Derek Brans 08 Apr '03

08 Apr '03

These are the result of running netstat at different times. Does anyone make anything out of this? Thank you, Derek First, just after I reboot my image:. netstat -an | grep 8002 tcp 0 0 0.0.0.0:8002 0.0.0.0:* LISTEN then when I try to access seaside netstat -an | grep 8002 tcp 500 0 127.0.0.1:8002 127.0.0.1:2015 ESTABLISHED tcp 0 0 127.0.0.1:2015 127.0.0.1:8002 ESTABLISHED tcp 0 0 0.0.0.0:8002 0.0.0.0:* LISTEN then again later when I try to access seaside again. netstat -an | grep 8002 tcp 500 0 127.0.0.1:8002 127.0.0.1:2017 ESTABLISHED tcp 0 0 127.0.0.1:2017 127.0.0.1:8002 ESTABLISHED tcp 501 0 127.0.0.1:8002 127.0.0.1:2015 CLOSE_WAIT tcp 0 0 127.0.0.1:2015 127.0.0.1:8002 FIN_WAIT2 tcp 0 0 0.0.0.0:8002 0.0.0.0:* LISTEN Derek Brans Nerd on a Wire Web design that's anything but square http://www.nerdonawire.com phone: 604.874.6463 mailto: brans(a)nerdonawire.com

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anchorWithAction:text:
by Brian Brown 08 Apr '03

08 Apr '03

I would like to build an anchor with an image like: <a href="generated seaside component link"><imageWithForm: image></a> so I tried to do the following: html anchorWithAction: [itemTarget mainContent: action.] text: (html imageWithForm: (ImageImports at: rollOver)). which produces the <img src=.... tag outside of the anchor tag with the correct image, and the text of anchor is 'a WAHtmlRenderer'. I can see this is from WAHtmlBuilder>>text with renders the object asString, and the object is a WAHtmlRenderer. How can I get it render the img src tag? Or is there a better way to go about this? Brian

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Writing tests for Seaside applications
by Derek Brans 07 Apr '03

07 Apr '03

Has anyone found a good system for writing tests for Seaside applications? Thanks, Derek Derek Brans Nerd on a Wire Web design that's anything but square http://www.nerdonawire.com phone: 604.874.6463 mailto: brans(a)nerdonawire.com

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Squeak Prototypes - what's development like?
by Derek Brans 05 Apr '03

05 Apr '03

The Squeak Prototypes package looks like a good framework for developing the domain objects for a Seaside application, as I find my domain objects tend to be just a collection of get/set accessor methods for information (not very logic-heavy). Does anyone have any comments, experiences on using this package or prototypes in general? Thank you, Derek Derek Brans Nerd on a Wire Web design that's anything but square http://www.nerdonawire.com phone: 604.874.6463 mailto: brans(a)nerdonawire.com

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people.advantive.com not responding...
by Derek Brans 05 Apr '03

05 Apr '03

I got an error trying to install SeasideService from SM. people.advantive.com is not responding. Thanks, Derek Derek Brans Nerd on a Wire Web design that's anything but square http://www.nerdonawire.com phone: 604.874.6463 mailto: brans(a)nerdonawire.com

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Re: people.advantive.com not responding...
by Derek Brans 04 Apr '03

04 Apr '03

Does anyone have a copy of SeasideService.st? Thanks. Derek Brans Nerd on a Wire Web design that's anything but square http://www.nerdonawire.com phone: 604.874.6463 mailto: brans(a)nerdonawire.com ----- Original Message ----- From: Derek Brans To: The Squeak Enterprise Aubergines Server - general discussion. Cc: spair(a)acm.org Sent: Friday, April 04, 2003 1:41 PM Subject: people.advantive.com not responding... I got an error trying to install SeasideService from SM. people.advantive.com is not responding. Thanks, Derek Derek Brans Nerd on a Wire Web design that's anything but square http://www.nerdonawire.com phone: 604.874.6463 mailto: brans(a)nerdonawire.com

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How stable is Seaside?
by jennyw 04 Apr '03

04 Apr '03

I just installed Seaside from SqueakMap (I'm using Squeak 3.4) and noticed that it was described as useable but still not stable. What does this mean exactly? I haven't done anything in Seaside yet, but it sounds very interesting. Thanks! Jen

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[ANN] Seaside-Mysql-0.2.4
by Keith P. Hodges 03 Apr '03

03 Apr '03

Hello All, (at last I think this one works properly!!!) I am pleased to present my first seaside2 efforts. It is a simple MySql database table viewer. I would be very grateful for someone to review what I have done so far in detail, and I would welcome any comments on design, interaction, appropriate use of seaside etc. The plan is to learn seaside, to learn MySql, and to write a simple web based database viewer and admin tool. I hope this will evolve into a Module, equivalent to the ZOPE database stuff. I figure that having a customisable web interface to the backend database admin would be a win too. These plans are time and income permitting of course. At this stage I think it is simple enough to be a non-trivial tutorial example. You will need the mysql 1.10 driver from squeakmap my changeset makes some modifications (e.g. adding SHOW TABLES, and SHOW DATABASES) Non-obvious feature: if you do not supply the database to login to, it will login to the mysql "test" database and perform a SHOW DATABASES, from which you can select a database to view. Q. I am not sure about how to ensure that the database connection is closed after a session. Q. my Session class is only used for default preferences. I think Avi was wondering about where to put prefs, does my app demonstrate that perhaps session is not the appropriate place for them? Q. I am passing around an instance of WAMySqlBottleneck to represent the connection, and note this is not stored in the Session, is this the right idea? Q. I havent looked at what I need to do to support the back button etc, most stuff kind of works. Forking a new browser doesnt really - what is the way ahead? feel free to ask any questions, and I am available on AIM, under the screename SpiritualHelp2, if you would like to chat. best regards Keith Hodges

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seaside April 2003