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issue with readonly instance

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Jency Thomas

issue with readonly instance

Hi,

Is there any way to get the instance node value for a readonly instance node on form submission?

I will make my requirement more clear.

I have an xforms:input whose instance is bound as readonly. From a popup jsp, I’m setting value to this textbox and triggering the onchanged event of this textbox using javascript. But since this node is bound as readonly, I’m not getting this value in the instance on submission. Is there any way to get the textbox value in the instance on submission? Please help.

Thanks in advance

Jency

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Erik Bruchez

Re: issue with readonly instance

Administrator

Jency,

Read-only controls are not allowed to write to instance data (that is,
while they are readonly). XForms 1.1 even further protects read-only
nodes by making sure that actions such as xforms:setvalue cannot
modify them.

The pattern we use for your kind of use case is to use a hidden
xforms:input control, e.g.:

<xforms:input ref="instance('my-temporary-instance')" class="xforms-
disabled"/>

Then, have your JavaScript use our API to set the value of an input
field, see:

http://www.orbeon.com/ops/doc/reference-xforms-2#xforms-javascript-get-set-value

Then, use xforms:setvalue or a calculate bind to copy over the data
stored in instance('my-temporary-instance') to the final location,
which is the read-only node.

-Erik

On Feb 11, 2008, at 5:22 AM, Jency Thomas wrote:

> Hi,
>
> Is there any way to get the instance node value for a readonly
> instance node on form submission?
> I will make my requirement more clear.
>
> I have an xforms:input whose instance is bound as readonly. From a
> popup jsp, I’m setting value to this textbox and triggering the
> onchanged event of this textbox using javascript. But since this
> node is bound as readonly, I’m not getting this value in the
> instance on submission. Is there any way to get the textbox value
> in the instance on submission? Please help.
>
> Thanks in advance
> Jency

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Orbeon Forms - Web Forms for the Enterprise Done the Right Way
http://www.orbeon.com/

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Jency Thomas

RE: Re: issue with readonly instance

In reply to this post by Jency Thomas

Thank you....but even the setvalue is working for readonly instance.
Will that feature be removed in future?

-----Original Message-----
From: Erik Bruchez [mailto:[hidden email]] On Behalf Of Erik Bruchez
Sent: Tuesday, February 12, 2008 11:35 PM
To: [hidden email]
Subject: [ops-users] Re: issue with readonly instance

Jency,

Read-only controls are not allowed to write to instance data (that is,
while they are readonly). XForms 1.1 even further protects read-only
nodes by making sure that actions such as xforms:setvalue cannot
modify them.

The pattern we use for your kind of use case is to use a hidden
xforms:input control, e.g.:

<xforms:input ref="instance('my-temporary-instance')" class="xforms-
disabled"/>

Then, have your JavaScript use our API to set the value of an input
field, see:

http://www.orbeon.com/ops/doc/reference-xforms-2#xforms-javascript-get-s
et-value

Then, use xforms:setvalue or a calculate bind to copy over the data
stored in instance('my-temporary-instance') to the final location,
which is the read-only node.

-Erik

On Feb 11, 2008, at 5:22 AM, Jency Thomas wrote:

> Hi,
>
> Is there any way to get the instance node value for a readonly
> instance node on form submission?
> I will make my requirement more clear.
>
> I have an xforms:input whose instance is bound as readonly. From a
> popup jsp, I'm setting value to this textbox and triggering the
> onchanged event of this textbox using javascript. But since this
> node is bound as readonly, I'm not getting this value in the
> instance on submission. Is there any way to get the textbox value
> in the instance on submission? Please help.
>
> Thanks in advance
> Jency

Erik Bruchez

Re: RE: Re: issue with readonly instance

Administrator

That's right, we do no yet implement this in Orbeon Forms.

It was only decided by the working group back in October that this was
the way readonly had to work. It came down to 1) how the XForms 1.0
specification was to be interpreted with regards to the readonly
property, and 2) what behavior we really wanted to have in XForms 1.1.

I strongly argued that readonly really ought to only impact UI
controls, but others thought otherwise and I lost the argument. In
fact, some implementations already interpreted the XForms 1.0 spec as
requiring full readonly protection in the model, which was seen as a
further argument in favor of this decision.

So in the future, we will likely implement this constraint in Orbeon
Forms. This will cause an incompatibility, but it seems hard to avoid
if we want to comply with XForms 1.1.

-Erik

On Feb 14, 2008, at 9:00 PM, Jency Thomas wrote:

>
> Thank you....but even the setvalue is working for readonly instance.
> Will that feature be removed in future?
>
> -----Original Message-----
> From: Erik Bruchez [mailto:[hidden email]] On Behalf Of Erik
> Bruchez
> Sent: Tuesday, February 12, 2008 11:35 PM
> To: [hidden email]
> Subject: [ops-users] Re: issue with readonly instance
>
> Jency,
>
> Read-only controls are not allowed to write to instance data (that is,
> while they are readonly). XForms 1.1 even further protects read-only
> nodes by making sure that actions such as xforms:setvalue cannot
> modify them.
>
> The pattern we use for your kind of use case is to use a hidden
> xforms:input control, e.g.:
>
> <xforms:input ref="instance('my-temporary-instance')" class="xforms-
> disabled"/>
>
> Then, have your JavaScript use our API to set the value of an input
> field, see:
>
> http://www.orbeon.com/ops/doc/reference-xforms-2#xforms-javascript-get-s
> et-value
>
> Then, use xforms:setvalue or a calculate bind to copy over the data
> stored in instance('my-temporary-instance') to the final location,
> which is the read-only node.
>
> -Erik
>
> On Feb 11, 2008, at 5:22 AM, Jency Thomas wrote:
>
>> Hi,
>>
>> Is there any way to get the instance node value for a readonly
>> instance node on form submission?
>> I will make my requirement more clear.
>>
>> I have an xforms:input whose instance is bound as readonly. From a
>> popup jsp, I'm setting value to this textbox and triggering the
>> onchanged event of this textbox using javascript. But since this
>> node is bound as readonly, I'm not getting this value in the
>> instance on submission. Is there any way to get the textbox value
>> in the instance on submission? Please help.
>>
>> Thanks in advance
>> Jency
>
> --
> Orbeon Forms - Web Forms for the Enterprise Done the Right Way
> http://www.orbeon.com/
>
>
> --
> You receive this message as a subscriber of the [hidden email]
> mailing list.
> To unsubscribe: mailto:[hidden email]
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