Get the result of JS function

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Thomas Heniart

22 Sep 2015 22 Sep '15

7:57 a.m.

Hi everyone,

Is it possible to get the result after calling a JS function from Seaside

For exemple I have a function in a JS file with a function test() which return true,

Can we do something like result := html aMethod: 'test()'. which execute my function and get the result as a String in result ?

Cheers, Thomas

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jtuchel＠objektfabrik.de

22 Sep 22 Sep

8:05 a.m.

Thomas,

the JS function runs down in the web browser and returns its result locally. So there is no easy way to get the results back to the server, as far as I know. Calling the function can also only be accomplished down in the Browser, e.g. by using events line onLoad etc.

What we usually do in Kontolino is to send such results back to the server using an AJAX call.

It is not easy to provide sample code, because you don't exactly state how and when you want a function to be called and such. So just a hint:

we ship down JS code that hooks into Document.onload() from our FileLibrary or external source (using html document addLoadScript:) and instead of simply returning results we send an AJAX call to the server to inform it about the results. The tricky part here is to give that script a callback name to call back to. Please ask for more specific info.

HTH

Joachim

Am 22.09.15 um 07:57 schrieb Thomas Heniart:

...

Hi everyone,

Is it possible to get the result after calling a JS function from Seaside

For exemple I have a function in a JS file with a function test() which return true,

Can we do something like result := html aMethod: 'test()'. which execute my function and get the result as a String in result ?

Cheers, Thomas

seaside mailing list seaside@lists.squeakfoundation.org http://lists.squeakfoundation.org/cgi-bin/mailman/listinfo/seaside

-- ----------------------------------------------------------------------- Objektfabrik Joachim Tuchel mailto:jtuchel@objektfabrik.de Fliederweg 1 http://www.objektfabrik.de D-71640 Ludwigsburg http://joachimtuchel.wordpress.com Telefon: +49 7141 56 10 86 0 Fax: +49 7141 56 10 86 1

Johan Brichau

9:13 a.m.

Thomas,

You can use the jQuery binding in Seaside to easily return javascript values in ajax callbacks. For example:

html button; onClick: (html jQuery ajax callback: [:value | Transcript show: value ] value: (html javascript call: ‘test’ withArguments: #())) with: ‘Call test’

The #callback:value: method passes the result of client-side expression to the server-side callback. Mind that (as the method comment states), this only works for single literal Javascript object (String, Number, Boolean). If you want to pass more complex result values, you can use #callback:json: or write your own serialization if json serialization is not sufficient either.

Hope this answers your question, Johan

...

On 22 Sep 2015, at 07:57, Thomas Heniart heniart.thomas@gmail.com wrote:

Hi everyone,

Is it possible to get the result after calling a JS function from Seaside

For exemple I have a function in a JS file with a function test() which return true,

Can we do something like result := html aMethod: 'test()'. which execute my function and get the result as a String in result ?

Cheers, Thomas _______________________________________________ seaside mailing list seaside@lists.squeakfoundation.org http://lists.squeakfoundation.org/cgi-bin/mailman/listinfo/seaside

Thomas Heniart

6:31 p.m.

2015-09-22 9:13 GMT+02:00 Johan Brichau johan@inceptive.be:

...

Thomas,

You can use the jQuery binding in Seaside to easily return javascript values in ajax callbacks. For example:

html button; onClick: (html jQuery ajax callback: [:value | Transcript show: value ] value: (html javascript call: ‘test’ withArguments: #())) with: ‘Call test’

I tried this but it doesn't work, nothing appeared in the Transcript like if the callback isn't triggered... Maybe I forget something in the configuration of application (WAAdmin register: self asApplicationAt: 'Test') addLibrary: JQDevelopmentLibrary; addLibraby: MyLibraryWithJsFiles

MyLibraryWithJsFiles contains just a js file with test() { return true; }

...

The #callback:value: method passes the result of client-side expression to the server-side callback. Mind that (as the method comment states), this only works for single literal Javascript object (String, Number, Boolean). If you want to pass more complex result values, you can use #callback:json: or write your own serialization if json serialization is not sufficient either.

Hope this answers your question, Johan

Thanks for your help,

Thomas

Thomas Heniart

7:21 p.m.

I get this error when I load the page: SyntaxError: expected expression, got '.' and I don't know why :/ What could it be?

Cheers, Thomas

2015-09-22 18:31 GMT+02:00 Thomas Heniart heniart.thomas@gmail.com:

...

2015-09-22 9:13 GMT+02:00 Johan Brichau johan@inceptive.be:

...
Thomas,

You can use the jQuery binding in Seaside to easily return javascript values in ajax callbacks. For example:

html button; onClick: (html jQuery ajax callback: [:value | Transcript show: value ] value: (html javascript call: ‘test’ withArguments: #())) with: ‘Call test’

I tried this but it doesn't work, nothing appeared in the Transcript like if the callback isn't triggered... Maybe I forget something in the configuration of application (WAAdmin register: self asApplicationAt: 'Test') addLibrary: JQDevelopmentLibrary; addLibraby: MyLibraryWithJsFiles

MyLibraryWithJsFiles contains just a js file with test() { return true; }

...
The #callback:value: method passes the result of client-side expression to the server-side callback. Mind that (as the method comment states), this only works for single literal Javascript object (String, Number, Boolean). If you want to pass more complex result values, you can use #callback:json: or write your own serialization if json serialization is not sufficient either.

Hope this answers your question, Johan

Thanks for your help,

Thomas

Johan Brichau

7:35 p.m.

In what file is the syntax error?

This is probably a syntax error in your javascript.

...

On 22 Sep 2015, at 19:21, Thomas Heniart heniart.thomas@gmail.com wrote:

I get this error when I load the page: SyntaxError: expected expression, got '.' and I don't know why :/ What could it be?

Cheers, Thomas

2015-09-22 18:31 GMT+02:00 Thomas Heniart <heniart.thomas@gmail.com mailto:heniart.thomas@gmail.com>:

2015-09-22 9:13 GMT+02:00 Johan Brichau <johan@inceptive.be mailto:johan@inceptive.be>: Thomas,

You can use the jQuery binding in Seaside to easily return javascript values in ajax callbacks. For example:

html button; onClick: (html jQuery ajax callback: [:value | Transcript show: value ] value: (html javascript call: ‘test’ withArguments: #())) with: ‘Call test’

I tried this but it doesn't work, nothing appeared in the Transcript like if the callback isn't triggered... Maybe I forget something in the configuration of application (WAAdmin register: self asApplicationAt: 'Test') addLibrary: JQDevelopmentLibrary; addLibraby: MyLibraryWithJsFiles

MyLibraryWithJsFiles contains just a js file with test() { return true; }

The #callback:value: method passes the result of client-side expression to the server-side callback. Mind that (as the method comment states), this only works for single literal Javascript object (String, Number, Boolean). If you want to pass more complex result values, you can use #callback:json: or write your own serialization if json serialization is not sufficient either.

Hope this answers your question, Johan

Thanks for your help,

Thomas

seaside mailing list seaside@lists.squeakfoundation.org http://lists.squeakfoundation.org/cgi-bin/mailman/listinfo/seaside

Thomas Heniart

7:47 p.m.

Error is in wqTest (:1:104), so I don't think that error is in my JS file which only contains function test() { return true; }

Really strange...

2015-09-22 19:35 GMT+02:00 Johan Brichau johan@inceptive.be:

...

In what file is the syntax error?

This is probably a syntax error in your javascript.

On 22 Sep 2015, at 19:21, Thomas Heniart heniart.thomas@gmail.com wrote:

I get this error when I load the page: SyntaxError: expected expression, got '.' and I don't know why :/ What could it be?

Cheers, Thomas

2015-09-22 18:31 GMT+02:00 Thomas Heniart heniart.thomas@gmail.com:

...
2015-09-22 9:13 GMT+02:00 Johan Brichau johan@inceptive.be:

...
Thomas,

You can use the jQuery binding in Seaside to easily return javascript values in ajax callbacks. For example:

html button; onClick: (html jQuery ajax callback: [:value | Transcript show: value ] value: (html javascript call: ‘test’ withArguments: #())) with: ‘Call test’

I tried this but it doesn't work, nothing appeared in the Transcript like if the callback isn't triggered... Maybe I forget something in the configuration of application (WAAdmin register: self asApplicationAt: 'Test') addLibrary: JQDevelopmentLibrary; addLibraby: MyLibraryWithJsFiles

MyLibraryWithJsFiles contains just a js file with test() { return true; }

...
The #callback:value: method passes the result of client-side expression to the server-side callback. Mind that (as the method comment states), this only works for single literal Javascript object (String, Number, Boolean). If you want to pass more complex result values, you can use #callback:json: or write your own serialization if json serialization is not sufficient either.

Hope this answers your question, Johan

Thanks for your help,

Thomas

seaside mailing list seaside@lists.squeakfoundation.org http://lists.squeakfoundation.org/cgi-bin/mailman/listinfo/seaside

seaside mailing list seaside@lists.squeakfoundation.org http://lists.squeakfoundation.org/cgi-bin/mailman/listinfo/seaside

Johan Brichau

9:48 p.m.

I think you will need to supply a bit more code or information.

Where is wqTest coming from?

...

On 22 Sep 2015, at 19:47, Thomas Heniart heniart.thomas@gmail.com wrote:

Error is in wqTest (:1:104), so I don't think that error is in my JS file which only contains function test() { return true; }

Really strange...

2015-09-22 19:35 GMT+02:00 Johan Brichau <johan@inceptive.be mailto:johan@inceptive.be>: In what file is the syntax error?

This is probably a syntax error in your javascript.

...
On 22 Sep 2015, at 19:21, Thomas Heniart <heniart.thomas@gmail.com mailto:heniart.thomas@gmail.com> wrote:

I get this error when I load the page: SyntaxError: expected expression, got '.' and I don't know why :/ What could it be?

Cheers, Thomas

2015-09-22 18:31 GMT+02:00 Thomas Heniart <heniart.thomas@gmail.com mailto:heniart.thomas@gmail.com>:

2015-09-22 9:13 GMT+02:00 Johan Brichau <johan@inceptive.be mailto:johan@inceptive.be>: Thomas,

You can use the jQuery binding in Seaside to easily return javascript values in ajax callbacks. For example:

html button; onClick: (html jQuery ajax callback: [:value | Transcript show: value ] value: (html javascript call: ‘test’ withArguments: #())) with: ‘Call test’

I tried this but it doesn't work, nothing appeared in the Transcript like if the callback isn't triggered... Maybe I forget something in the configuration of application (WAAdmin register: self asApplicationAt: 'Test') addLibrary: JQDevelopmentLibrary; addLibraby: MyLibraryWithJsFiles

MyLibraryWithJsFiles contains just a js file with test() { return true; }

The #callback:value: method passes the result of client-side expression to the server-side callback. Mind that (as the method comment states), this only works for single literal Javascript object (String, Number, Boolean). If you want to pass more complex result values, you can use #callback:json: or write your own serialization if json serialization is not sufficient either.

Hope this answers your question, Johan

Thanks for your help,

Thomas

seaside mailing list seaside@lists.squeakfoundation.org mailto:seaside@lists.squeakfoundation.org http://lists.squeakfoundation.org/cgi-bin/mailman/listinfo/seaside http://lists.squeakfoundation.org/cgi-bin/mailman/listinfo/seaside

seaside mailing list seaside@lists.squeakfoundation.org mailto:seaside@lists.squeakfoundation.org http://lists.squeakfoundation.org/cgi-bin/mailman/listinfo/seaside http://lists.squeakfoundation.org/cgi-bin/mailman/listinfo/seaside

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Thomas Heniart

23 Sep 23 Sep

8:25 a.m.

wqTest come from WQTest class class side: canBeRoot ^ true

initialize super initialize. (WAAdmin register: self asApplicationAt: 'wqTest') addLibrary: JQDevelopmentLibrary; addLibrary: WQTestFileLibrary

instance side: renderContentOn: html html button onClick: (html jQuery ajax callback: [ :value | Transcript show: 'value' ] value: (html javascript call: 'test')); with: 'Call test'

And WQTestFileLibrary contains a single JS file with:

function test() { return true; }

This a very small example just to see where the bug could come from

Thomas

2015-09-22 21:48 GMT+02:00 Johan Brichau johan@inceptive.be:

...

I think you will need to supply a bit more code or information.

Where is wqTest coming from?

On 22 Sep 2015, at 19:47, Thomas Heniart heniart.thomas@gmail.com wrote:

Error is in wqTest (:1:104), so I don't think that error is in my JS file which only contains function test() { return true; }

Really strange...

2015-09-22 19:35 GMT+02:00 Johan Brichau johan@inceptive.be:

...
In what file is the syntax error?

This is probably a syntax error in your javascript.

On 22 Sep 2015, at 19:21, Thomas Heniart heniart.thomas@gmail.com wrote:

I get this error when I load the page: SyntaxError: expected expression, got '.' and I don't know why :/ What could it be?

Cheers, Thomas

2015-09-22 18:31 GMT+02:00 Thomas Heniart heniart.thomas@gmail.com:

...
2015-09-22 9:13 GMT+02:00 Johan Brichau johan@inceptive.be:

...
Thomas,

You can use the jQuery binding in Seaside to easily return javascript values in ajax callbacks. For example:

html button; onClick: (html jQuery ajax callback: [:value | Transcript show: value ] value: (html javascript call: ‘test’ withArguments: #())) with: ‘Call test’

I tried this but it doesn't work, nothing appeared in the Transcript like if the callback isn't triggered... Maybe I forget something in the configuration of application (WAAdmin register: self asApplicationAt: 'Test') addLibrary: JQDevelopmentLibrary; addLibraby: MyLibraryWithJsFiles

MyLibraryWithJsFiles contains just a js file with test() { return true; }

...
The #callback:value: method passes the result of client-side expression to the server-side callback. Mind that (as the method comment states), this only works for single literal Javascript object (String, Number, Boolean). If you want to pass more complex result values, you can use #callback:json: or write your own serialization if json serialization is not sufficient either.

Hope this answers your question, Johan

Thanks for your help,

Thomas

seaside mailing list seaside@lists.squeakfoundation.org http://lists.squeakfoundation.org/cgi-bin/mailman/listinfo/seaside

seaside mailing list seaside@lists.squeakfoundation.org http://lists.squeakfoundation.org/cgi-bin/mailman/listinfo/seaside

seaside mailing list seaside@lists.squeakfoundation.org http://lists.squeakfoundation.org/cgi-bin/mailman/listinfo/seaside

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Bob Arning

22 Sep 22 Sep

7:48 p.m.

happens to me when I write js with my Smalltalk hat on. Periods instead of semicolons at the end of a statement.

On 9/22/15 1:21 PM, Thomas Heniart wrote:

...

I get this error when I load the page: SyntaxError: expected expression, got '.' and I don't know why :/ What could it be?

Cheers, Thomas

2015-09-22 18:31 GMT+02:00 Thomas Heniart <heniart.thomas@gmail.com mailto:heniart.thomas@gmail.com>:

2015-09-22 9:13 GMT+02:00 Johan Brichau <johan@inceptive.be
<mailto:johan@inceptive.be>>:

    Thomas,

    You can use the jQuery binding in Seaside to easily return
    javascript values in ajax callbacks.
    For example:

    html
            button;
            onClick: (html jQuery ajax callback: [:value |
    Transcript show: value ] value: (html javascript call: ‘test’
    withArguments: #()))
            with: ‘Call test’


I tried this but it doesn't work, nothing appeared in the
Transcript like if the callback isn't triggered...
Maybe I forget something in the configuration of application
(WAAdmin register: self asApplicationAt: 'Test')
        addLibrary: JQDevelopmentLibrary;
        addLibraby: MyLibraryWithJsFiles

MyLibraryWithJsFiles contains just a js file with test() { return
true; }


    The #callback:value: method passes the result of client-side
    expression to the server-side callback.
    Mind that (as the method comment states), this only works for
    single literal Javascript object (String, Number, Boolean). If
    you want to pass more complex result values, you can use
    #callback:json: or write your own serialization if json
    serialization is not sufficient either.

    Hope this answers your question,
    Johan



Thanks for your help,

Thomas

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Bob Arning
Johan Brichau
jtuchel＠objektfabrik.de
Thomas Heniart