Passing Javascript Into GSP tags

[thirdion1618]

Hey,

Am fairly new to Grails, and am stuck on an issue in my first grails app (an exploratory contacts app).

I have the following in my list.gsp :
<g:select name="searchfield" onchange="alert(this.value);${session.sfs=this.value};" from="${['Firstname', 'Lastname', 'Country', 'Organisation', 'Region']}" keys="${['Firstname', 'Lastname', 'Country', 'Organisation', 'Region']}" noSelection="['':'--Choose--']" />

While alert shows the current value of select combobox, it always passes null value to session.sfs.

Can someone please advise what I am doing wrong here, and how to pass this.value to session tag properly?

[Chris Sengstock]

Hi,

2007/10/9, thirdion1618 <[hidden email]>:
>
> Hey,
>
> Am fairly new to Grails, and am stuck on an issue in my first grails app (an
> exploratory contacts app).
>
> I have the following in my list.gsp :
> <g:select name="searchfield"
> onchange="alert(this.value);${session.sfs=this.value};"

you're mixing javascript with java/groovy (the stuff inside ${..}). To
really start with java web development skip the "onchange" attribute
(javascript) and learn about using Controllers and Views.
You need to handle a "request" (either as a normal HttpRequest or as
an AJAX-request) to assign a value to a session attribute.

To assing the value to a session attribute what you need to do is:

* Submit your formular (not 'onchange' except you understand AJAX!)
* Read the 'searchfield' parameter inside of the controller action
(its the value of the selected option)
* Assign this value to a session attribute (inside of the controller
or in the the view)

> from="${['Firstname', 'Lastname', 'Country', 'Organisation', 'Region']}"
> keys="${['Firstname', 'Lastname', 'Country', 'Organisation', 'Region']}"
> noSelection="['':'--Choose--']" />
>
> While alert shows the current value of select combobox, it always passes
> null value to session.sfs.
>
> Can someone please advise what I am doing wrong here, and how to pass
> this.value to session tag properly?
>
>
> --
> View this message in context: http://www.nabble.com/Passing-Javascript-Into-GSP-tags-tf4591118.html#a13106202
> Sent from the grails - user mailing list archive at Nabble.com.
>
>
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> To unsubscribe from this list please visit:
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[thirdion1618]

I was able solve this problem using g:remoteFunction and creating a related controller to update the
session attribute.

<g:select id="sfid" name="searchfield" onchange="${remoteFunction(action:'changesessionvar',params:'\'val=\' + this.value')}" from="${['Firstname', 'Lastname', 'Country', 'Organisation', 'Region', 'Category', 'OrganisationType', 'Department', 'Position']}" noSelection="['':'--Choose--']" />

I really think that grails should have provisions (via a tag, etc) to inter-mix javascript variables within gsp tags.

Christian Sengstock wrote

Hi,

2007/10/9, thirdion1618 <[e-mail]>:
>
> Hey,
>
> Am fairly new to Grails, and am stuck on an issue in my first grails app (an
> exploratory contacts app).
>
> I have the following in my list.gsp :
> <g:select name="searchfield"
> onchange="alert(this.value);${session.sfs=this.value};"

you're mixing javascript with java/groovy (the stuff inside ${..}). To
really start with java web development skip the "onchange" attribute
(javascript) and learn about using Controllers and Views.
You need to handle a "request" (either as a normal HttpRequest or as
an AJAX-request) to assign a value to a session attribute.

To assing the value to a session attribute what you need to do is:

* Submit your formular (not 'onchange' except you understand AJAX!)
* Read the 'searchfield' parameter inside of the controller action
(its the value of the selected option)
* Assign this value to a session attribute (inside of the controller
or in the the view)


> from="${['Firstname', 'Lastname', 'Country', 'Organisation', 'Region']}"
> keys="${['Firstname', 'Lastname', 'Country', 'Organisation', 'Region']}"
> noSelection="['':'--Choose--']" />
>
> While alert shows the current value of select combobox, it always passes
> null value to session.sfs.
>
> Can someone please advise what I am doing wrong here, and how to pass
> this.value to session tag properly?
>
>
> --
> View this message in context: http://www.nabble.com/Passing-Javascript-Into-GSP-tags-tf4591118.html#a13106202
> Sent from the grails - user mailing list archive at Nabble.com.
>
>
> ---------------------------------------------------------------------
> To unsubscribe from this list please visit:
>
>     http://xircles.codehaus.org/manage_email
>
>

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[Chris Sengstock]

Hi again,

2007/10/9, thirdion1618 <[hidden email]>:

>
>
> I was able solve this problem using g:remoteFunction and creating a related
> controller to update the
> session attribute.
>
> <g:select id="sfid" name="searchfield"
> onchange="${remoteFunction(action:'changesessionvar',params:'\'val=\' +
> this.value')}" from="${['Firstname', 'Lastname', 'Country', 'Organisation',
> 'Region', 'Category', 'OrganisationType', 'Department', 'Position']}"
> noSelection="['':'--Choose--']" />
>

> > To assing the value to a session attribute what you need to do is:
> >
> > * Submit your formular (not 'onchange' except you understand AJAX!)

of course you perfectly understand it, sorry for being a little harsh ;-)
Chris

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