seaside August 2008

seaside@lists.squeakfoundation.org

68 participants
67 discussions

[ANN] Phantasia: A CSS Framework
by Hernán Morales 27 Oct '09

27 Oct '09

Dear anyone interested in working with Smalltalk objects: Now you can write in Smalltalk to style pages with CSS. Instead of styling with ugly, boring and long Strings (where you must perform a continuous visual sweeping of the code to make the most trivial modification), you can create high-level super sexy CSS constructs, track and review your styles with the standard Smalltalk tools (XReferences), and share constructs and configurations easily. The framework includes a set of 40 fixed layout templates ready for use, and let you compose the basic CSS elements as objects. A note: If your department, office, ark, whatever, have graphical designers, they rarely would love to learn this new strange prolific ninja environment called Smalltalk just for writing CSS - besides, a lot of them are already in love with anything after the word "Adobe" -, but, for smalltalkers, by far we believe that's easier to work inside Smalltalk with objects than in a file-based way. Sincerely, Hernán PD: The I-almost-forget-it part of this mail: Juan Burella and me wrote Phantasia. Download it from http://www.squeaksource.com/Phantasia.html

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SEO and Seaside
by Richard Eng 27 Apr '09

27 Apr '09

Is Seaside/Squeak SEO-friendly? My website isn't showing up in any search results on Google, Yahoo!, or MSN. Apparently, spiders have a hard time scanning my website. Perhaps because of the "dynamic" nature of the application? Thanks, Richard

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[ANN] Call for contributors
by stephane ducasse 20 Dec '08

20 Dec '08

We are looking for presentations...and we want to create a cool event in Europe around Smalltalk. Do not wait the last moment to send your presentation. This is at ESUG that Lukas and Adrian presented the first Seaside talk in Europe :) Stef > --------------------------------------------------------------------- > 16th International Smalltalk Joint Conference - Call for Contributions > > August 25-29, 2008 - Amsterdam, the Netherlands > > http://www.esug.org/conferences/2008/ > ---------------------------------------------------------------------- > > For the past 16 years, the European Smalltalk User Group (ESUG) has > organised the International Smalltalk Conference, a lively forum on > cutting edge software technologies that attract people from both > academia and industry for a whole week. The attendees are both > engineers using Smalltalk in business and students and teachers > using Smalltalk both for research and didactic purposes. > > As every year, this year's edition of the largest European Smalltalk > event will include the regular Smalltalk developers conference with > renowned invited speakers, a Smalltalk camp that proves fruitful for > interactions and discussions. Besides, this year will be held the > 4th edition of the Innovation Technology Awards where prizes will be > awarded to authors of best pieces of Smalltalk-related projects. > > You can support the ESUG conference in many different ways: > > * Sponsor the conference. New sponsoring packages are described at http://www.esug.org/supportesug/becomeasponsor/ > * Submit a talk, a software or a paper to one of the events. See > below. > * Attend the conference. We'd like to beat the previous record of > attendance (116 people at Köthen, Germany in 2004)! > * Students can get free registration and hosting if they enroll > into the the Student Volunteers program. See below. > > The conference features the following events: > > * Camp Smalltalk - There will be a Smalltalk camp the 23-24th of > august > * Developers Forum > * Technology Forum > > Developers Forum : International Smalltalk Developers Conference > ------------------ > This year we are looking for YOUR experience on using Smalltalk. The > list of topics includes, but is not limited to the following: > > * XP practices > * Development tools > * Experience reports > * Model driven development > * Web development > * Team management > * Meta-Modeling > * Security > * New libraries & frameworks > * Educational material > * Embedded systems and robotics > * SOA and Web services > * Interaction with other programming languages > > Submissions due on 1st June 2008 > Notification of acceptance on 15 of June 2008 > More information at http://www.esug.org/conferences/2008 > > How to sumbit? > ------------------ > Pay attention: the places are limited so do not wait till the last > minute to apply. Prospective presenters should submit a request to esug-info(a)esug.orgfollowing > the template below. Please use this template since the email will > be automatically processed! > > Subject: [ESUG 2008 Developers] + your name > > First Name: > > Last Name: > > Email where you can always be reached: > > Title: > > Abstract: > > Bio: > > Any presentation not respecting this form will be discarded > automatically > > > Technology Forum > ------------------ > We are proud to announce the 4th Innovation Technology Awards. The > top 3 teams with the most innovative software will receive, > respectively, 500 Euros, 300 Euros and 200 Euros during an awards > ceremony at the conference. Developers of any Smalltalk-based > software are welcome to compete. > More information at http://www.esug.org/conferences/2008 > > Student Volunteer Program > ------------------ > If you are a student wanting to attend ESUG, have you considered > being a student volunteer? Student volunteers help keep the > conference running smoothly; in return, they have free > accommodations, while still having most of the time to enjoy the > conference. > More information at > http://www.esug.org/conferences/2008 http://www.esug.org/conferences/16thinternationalsmalltalkjointconference20… > > > We hope to see you there and have fun together. > > > > >

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Seaside Scaling - How successful?
by Rich 07 Sep '08

07 Sep '08

I've been looking for a framework that will grow with my company's projected online growth rate and Seaside looks very interesting. We developed a Java based web site for a beta product, but I'm not happy with the results or the amount of code/time required to make things work with Java. I'm looking for something that will have a faster implementation and also scale well as we grow. I stumbled across Seaside on Blog post and thought I'd take a look. Seaside looks like it has some very nice features and I've been spending the last couple of days doing some of the tutorials and watching several of the "Why Seaside" talks. Thanks to your community for posting those. I do have some reservations about Seaside and I'm hoping that the members of this list can point me in the right direction for the answers or have some of their own success stories. Here are my concerns at this point in time: Scalability - How does one scale Seaside? I've seen GemStone/S to help with persistence and using Apache for static content. These seem very logical, but I'm still wondering what it takes in hardware to support 1K, 10K and 100K unique visitors per month to a Seaside based site. I know this will be code dependent, but I'm interested in seeing 1) if its even possible to hit in excess of 100K visitors per month and 2) what it would take from a hardware perspective to hit this number of visitors. Memory Requirements - I read in the archives, and I'm betting this is an older pre 2.8 rev memory number, it takes 2M per client for Seaside. Is this still the case? Hosting - What is the best way to host Seaside if you want to use someone else's hardware? Has anyone implemented an AMI on AWS for hosting? Success Stories - Any success stories where a site is servicing in excess of 5K visitors per day using Seaside? If so, what did it take to get here and would you do it again? How are you handling persistence? What is your limit based on current hardware/software? Learn Seaside - What is the best way to learn Seaside for a non- Smalltalk developer? Any information you could provide that would help me make this decision would be much appreciated. Thanks for your time. Rich

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Seaside 2.8a1-lr.518 - VW7.6 27 - weird thing happening
by Claus Kick 02 Sep '08

02 Sep '08

Hello everyone, I am experimenting with Seaside 2.8 on VisualWorks 7.6. After implementing some components, I figured I should get more accustomed with VisualWorks itself first, so I wrote a few classes (nothing in the Seaside class hierarchy). Now this is mostly done, so I wanted to go back to working on the Seaside project. But strangely enough, my app does not work anymore. Ok, perhaps I made a mistake with it, so I tried to have a look at its configuration. Turns out I receive this stack trace when I click on "edit" for that app : Possible Causes * you sent a message this type of object doesn't understand Stack Trace 1. thisContext Seaside.WAValueHolder(Object)>>doesNotUnderstand: self a Seaside.WAValueHolder contents: a Seaside.WAAnswerHandler aMessage a Message with selector: #restore: and arguments: #(a Seaside.WAValueHolder contents: a Seaside.WAAnswerHandler)...etc... excpt a MessageNotUnderstood resumeValue nil 2. thisContext Seaside.WAValueHolder(Object)>>restoreFrom: self a Seaside.WAValueHolder contents: a Seaside.WAAnswerHandler aMemento a Seaside.WAValueHolder contents: a Seaside.WAAnswerHandler 3. thisContext Seaside.WAValueHolder(Object)>>restoreFromSnapshot: self a Seaside.WAValueHolder contents: a Seaside.WAAnswerHandler anObject a Seaside.WAValueHolder contents: a Seaside.WAAnswerHandler 4. thisContext optimized [] in Seaside.WASnapshot>>restore self BlockClosure [] in Seaside.WASnapshot>>restore key a Seaside.WAValueHolder contents: a Seaside.WAAnswerHandler value a Seaside.WAValueHolder contents: a Seaside.WAAnswerHandler 5. thisContext Seaside.WASnapshot(IdentityDictionary)>>keysAndValuesDo: self Seaside.WASnapshot (a Seaside.WAValueHolder contents: a Seaside.WAAnswerHandler->a Seaside.WAValueHolder contents: a Seaside.WAAnswerHandler a Seaside.WAValueHolder contents: a Seaside.WAWalkback->a Seaside.WAValueHolder contents: a Seaside.WAWalkback )...etc... aBlock BlockClosure [] in Seaside.WASnapshot>>restore index 2 key a Seaside.WAValueHolder contents: a Seaside.WAAnswerHandler Restarting Seaside did not help. Trying to remove the Application Configuration also returns a walkback, as does trying to access the tests or the examples. What can I do now? Cheers - Claus

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About squeaksource.eu
by stephane ducasse 02 Sep '08

02 Sep '08

Hello squeaksourcers and others. ESUG has the www.squeaksource.eu entry. Now it is going to be expired and the board is wondering if it makes sense to keep it. Please let us know your point of view. Stef

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Re: seaside Digest, Vol 68, Issue 38
by r00t uk 31 Aug '08

31 Aug '08

Thanks James for the response and welcome! :) I went back to the #callback: style and used #setFocus in both methods for testing. With "...html textInput setFocus;...." present in both methods I know longer get a stack trace, but the focus ends up on the last receiver. So definitely has something to do with #setFocus not being present. I then re-wrote the methods using #on:of: style (see below), with #setFocus present in both, one or neither of the methods. It worked in all 3 scenarios and there are no cascades present. renderCompanyTextInputOn: html self renderLabel: 'Company Name: ' input: [ html textInput on: #companyName of: self headDataModelView] output: self headDataModelView companyName on: html. renderEmployeeTextInputOn: html self renderLabel: 'Employee Name: ' input: [ html textInput setFocus on: #employeeName of: self headDataModelView] output: self headDataModelView employeeName on: html. The Seaside examples, which I used as references, can be found in Seaside-Tests-Functional WAInputElementContainer>>renderTextInputOn:, WAInputElementContainer>>renderTextInputExampleOn: etc. but these work. Anyway, I will move forward using the #on:of: as these work and appear to achieve the same as the #callback: method. Thanks for the help. Regards Adrian > > Message: 7 > Date: Sat, 30 Aug 2008 22:05:41 +0200 > From: James Foster <Smalltalk(a)JGFoster.net> > Subject: Re: [Seaside] Newbie question > To: Seaside - general discussion <seaside(a)lists.squeakfoundation.org> > Message-ID: <B7D0654B-53B8-4A3C-B213-7691536A8825(a)JGFoster.net> > Content-Type: text/plain; charset="us-ascii" > > Hi Adrian, > > I haven't tried your code myself, but a brief visual scan suggests at > least one problem that I've identified below... > > On Aug 30, 2008, at 9:32 PM, r00t uk wrote: > > > Hello All > > > > I am slowly working my way through Squeak and Seaside using "An > > Introduction to Seaside" and the Seaside examples as my learning > > guides. I have come across an issue which I don't understand, and I > > am hoping someone could enlighten me as to what is going wrong. The > > two methods below are called by > > MLHeadDataModelView>>renderContentOn:, with > > MLHeadDataModelView>>renderCompanyTextInputOn: resulting in a > > MessageNotUnderstood: WARenderCanvas>>value: error. > > > > The instance methods are: > > > > MLHeadDataModelView>>renderCompanyTextInputOn: "This method > > generates the 'MessageNotUnderstood: WARenderCanvas>>value:' error" > > self > > renderLabel: 'Company Name: ' > > input: [ > > html textInput; > > value: self headDataModelView companyName; > > callback: [:value | self headDataModelView companyName: > > value]] > > output: self headDataModelView companyName > > on: html. > > > > MLHeadDataModelView>>renderEmployeeTextInputOn: > > self > > renderLabel: 'Employee Name: ' > > input: [ > > html textInput setFocus; > > In Smalltalk the semantics of a cascade (indicated by the semi-colon) > means that the following #value: message is being sent to the receiver > of the last message. The last message is #setFocus, and the receiver > of the #setFocus was the object returned by the #textInput message. > Thus, #value: is being sent to a WATextInputTag (or similar object), > not to the WARenderCanvas (which is probably what you really wanted). > > > value: self headDataModelView employeeName; > > callback: [:value | self headDataModelView employeeName: > > value]] > > output: self headDataModelView employeeName > > on: html. > > > > MLHeadDataModelView>>initialize > > initialize > > super initialize. > > self headDataModelView: MLHeadDataModel new. > > > > I don't get any error messages if I use the on:of: style, but not > > sure what exact difference or benefits are between the two. > > The difference is that you don't have a #setFocus message. > > > MLHeadDataModelView>>renderCompanyTextInputOn: > > renderCompanyTextInputOn: html > > self > > renderLabel: 'Company Name: ' > > input: [ > > html textInput on: #companyName of: self > > headDataModelView] > > output: self headDataModelView companyName > > on: html. > > > > MLHeadDataModelView>>renderEmployeeTextInputOn: > > renderEmployeeTextInputOn: html > > self > > renderLabel: 'Employee Name: ' > > input: [ > > html textInput on: #employeeName of: self > > headDataModelView] > > output: self headDataModelView employeeName > > on: html. > > > > Thanks in advance for any feedback. > > > > Regards > > Adrian > > Hope that helps, and welcome to Seaside! > > James Foster > >

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Google indexing and bookmarks on Seaside sites
by David Buck 31 Aug '08

31 Aug '08

I'm developing a Seaside application for the Internet Ray Tracing Competition web site. By the nature of the site, the results of previous rounds of the IRTC are effectively static while a few pages change periodically as contests start and end. Ideally, we would like all of the site to be google-indexable and bookmarkable unless you are logged in with a userid. Now, I know how to make bookmarkable pages in Seaside using initialRequest:. This technique, however, requires me to replace all callback: calls with url: calls, generate appropriate URL's that can recover their place, and add handling code in the initialRequest: method for tons of different pages. I fear that this technique will become unmaintainable. I also fear that we will lose some Seaside capability by never creating a session and losing sessions if you navigate to a bookmarkable page. Does anyone have advice on how to do this? BTW, you can preview the site at: http://newtest.irtc.org:7777/irtc (this address will disappear in a few weeks) The original IRTC site is at: http://www.irtc.org (in a few weeks, the new site will live here) Thanks David Buck

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[ANN] seaBreeze for Seaside
by Magnus Schwarz 31 Aug '08

31 Aug '08

Georg Heeg made an announcement at ESUG 2008 yesterday: seaBreeze will be released under MIT license to the public repository. seaBreeze is a "... next-generation web development platform that enables you to set-up and maintain a complete Web2.0 Seaside application -- from initial setup of the components (with the wizard functionality) through addition of widgets to these pages and positioning the elements on a page to finally doing the CSS layout inside the web browser." That gives you "...the power of the Seaside web framework combined with the ease of visual design suites" For more infos look at <seabreeze.heeg.de> -- Magnus Schwarz * certified Scrum Master / Smalltalk architect * mailto:magnus.schwarz@heeg.de phone:+49 231 97599-0 * fax:+49 231 97599-20 Georg Heeg eK Dortmund Handelsregister: Amtsgericht Dortmund A 12812 --------------------------------------------------- PGP PUBLIC KEY BLOCK via http://www.heeg.de/~magnus

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Newbie question
by r00t uk 30 Aug '08

30 Aug '08

Hello All I am slowly working my way through Squeak and Seaside using "An Introduction to Seaside" and the Seaside examples as my learning guides. I have come across an issue which I don't understand, and I am hoping someone could enlighten me as to what is going wrong. The two methods below are called by MLHeadDataModelView>>renderContentOn:, with MLHeadDataModelView>>renderCompanyTextInputOn: resulting in a MessageNotUnderstood: WARenderCanvas>>value: error. The instance methods are: MLHeadDataModelView>>renderCompanyTextInputOn: "This method generates the 'MessageNotUnderstood: WARenderCanvas>>value:' error" self renderLabel: 'Company Name: ' input: [ html textInput; value: self headDataModelView companyName; callback: [:value | self headDataModelView companyName: value]] output: self headDataModelView companyName on: html. MLHeadDataModelView>>renderEmployeeTextInputOn: self renderLabel: 'Employee Name: ' input: [ html textInput setFocus; value: self headDataModelView employeeName; callback: [:value | self headDataModelView employeeName: value]] output: self headDataModelView employeeName on: html. MLHeadDataModelView>>initialize initialize super initialize. self headDataModelView: MLHeadDataModel new. I don't get any error messages if I use the on:of: style, but not sure what exact difference or benefits are between the two. MLHeadDataModelView>>renderCompanyTextInputOn: renderCompanyTextInputOn: html self renderLabel: 'Company Name: ' input: [ html textInput on: #companyName of: self headDataModelView] output: self headDataModelView companyName on: html. MLHeadDataModelView>>renderEmployeeTextInputOn: renderEmployeeTextInputOn: html self renderLabel: 'Employee Name: ' input: [ html textInput on: #employeeName of: self headDataModelView] output: self headDataModelView employeeName on: html. Thanks in advance for any feedback. Regards Adrian

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seaside August 2008