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Posted to users@tapestry.apache.org by arterzatij <ar...@gmail.com> on 2012/09/07 01:15:44 UTC

datefiled and null value 2

Hi all, 

   There is a way to display an empty datefiled avoiding the NPE, I have the
next code on my tml file

<t:datefield t:id="date" value="expense.date" style="width: 7em;" />


 but if the date is null, tapestry rise the NPE...

Failure reading parameter 'value' of component expenses/Expenses:date:
Property 'expense' (within property expression 'expense.date', of
com.rimsamex.app.expenses.pages.Expenses@1b26a992) is null.


So, if the value is null I want to display an empty field, How can I reach
that?

Thanks in advance!




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Re: datefiled and null value 2

Posted by arterzatij <ar...@gmail.com>.
thanks my bad...



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Re: datefiled and null value 2

Posted by Muhammad Gelbana <m....@gmail.com>.
It's "expense*?*.date" *not* "expense.date*?*"

DateField already handles formatting null values

// org.apache.tapestry5.corelib.components.DateField.formatCurrentValue()

private String formatCurrentValue()
> {
>     if (value == null)
>         return "";
>     return format.format(value);
> }


On Fri, Sep 7, 2012 at 1:29 AM, ICE Ernesto Arteaga Zavala <
arterzatij@gmail.com> wrote:

> Hi Muhammad, thanks for quick ans but I try it before but I got the next
> exp...
>
>
> Exception assembling root component of page expenses/Expenses: Could not
> convert 'expense.date?' into a component parameter binding: Error parsing
> property expression 'expense.date?': Unable to parse input at character
> position 14.
>
>
> 2012/9/6 Muhammad Gelbana <m....@gmail.com>
>
> > <t:datefield t:id="date" value="expense?.date" style="width: 7em;" />
> >
> > Check this page: http://tapestry.apache.org/property-expressions.html
> > Search for:  Property Chain
> >
> > On Fri, Sep 7, 2012 at 1:15 AM, arterzatij <ar...@gmail.com> wrote:
> >
> > > Hi all,
> > >
> > >    There is a way to display an empty datefiled avoiding the NPE, I
> have
> > > the
> > > next code on my tml file
> > >
> > > <t:datefield t:id="date" value="expense.date" style="width: 7em;" />
> > >
> > >
> > >  but if the date is null, tapestry rise the NPE...
> > >
> > > Failure reading parameter 'value' of component expenses/Expenses:date:
> > > Property 'expense' (within property expression 'expense.date', of
> > > com.rimsamex.app.expenses.pages.Expenses@1b26a992) is null.
> > >
> > >
> > > So, if the value is null I want to display an empty field, How can I
> > reach
> > > that?
> > >
> > > Thanks in advance!
> > >
> > >
> > >
> > >
> > > --
> > > View this message in context:
> > >
> >
> http://tapestry.1045711.n5.nabble.com/datefiled-and-null-value-2-tp5716109.html
> > > Sent from the Tapestry - User mailing list archive at Nabble.com.
> > >
> > > ---------------------------------------------------------------------
> > > To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
> > > For additional commands, e-mail: users-help@tapestry.apache.org
> > >
> > >
> >
>
>
>
> --
> Saludos,
>
> -------------------------------------------------------------------
> "Nada que se consiga sin pena y sin trabajo
>  es verdaderamente valioso."
>                                           Joseph Addison
> -------------------------------------------------------------------
>
> ICE Ernesto Arteaga Zavala
> Ingeniero de Desarrollo
>

Re: datefiled and null value 2

Posted by ICE Ernesto Arteaga Zavala <ar...@gmail.com>.
Hi Muhammad, thanks for quick ans but I try it before but I got the next
exp...


Exception assembling root component of page expenses/Expenses: Could not
convert 'expense.date?' into a component parameter binding: Error parsing
property expression 'expense.date?': Unable to parse input at character
position 14.


2012/9/6 Muhammad Gelbana <m....@gmail.com>

> <t:datefield t:id="date" value="expense?.date" style="width: 7em;" />
>
> Check this page: http://tapestry.apache.org/property-expressions.html
> Search for:  Property Chain
>
> On Fri, Sep 7, 2012 at 1:15 AM, arterzatij <ar...@gmail.com> wrote:
>
> > Hi all,
> >
> >    There is a way to display an empty datefiled avoiding the NPE, I have
> > the
> > next code on my tml file
> >
> > <t:datefield t:id="date" value="expense.date" style="width: 7em;" />
> >
> >
> >  but if the date is null, tapestry rise the NPE...
> >
> > Failure reading parameter 'value' of component expenses/Expenses:date:
> > Property 'expense' (within property expression 'expense.date', of
> > com.rimsamex.app.expenses.pages.Expenses@1b26a992) is null.
> >
> >
> > So, if the value is null I want to display an empty field, How can I
> reach
> > that?
> >
> > Thanks in advance!
> >
> >
> >
> >
> > --
> > View this message in context:
> >
> http://tapestry.1045711.n5.nabble.com/datefiled-and-null-value-2-tp5716109.html
> > Sent from the Tapestry - User mailing list archive at Nabble.com.
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
> > For additional commands, e-mail: users-help@tapestry.apache.org
> >
> >
>



-- 
Saludos,

-------------------------------------------------------------------
"Nada que se consiga sin pena y sin trabajo
 es verdaderamente valioso."
                                          Joseph Addison
-------------------------------------------------------------------

ICE Ernesto Arteaga Zavala
Ingeniero de Desarrollo

Re: datefiled and null value 2

Posted by Muhammad Gelbana <m....@gmail.com>.
<t:datefield t:id="date" value="expense?.date" style="width: 7em;" />

Check this page: http://tapestry.apache.org/property-expressions.html
Search for:  Property Chain

On Fri, Sep 7, 2012 at 1:15 AM, arterzatij <ar...@gmail.com> wrote:

> Hi all,
>
>    There is a way to display an empty datefiled avoiding the NPE, I have
> the
> next code on my tml file
>
> <t:datefield t:id="date" value="expense.date" style="width: 7em;" />
>
>
>  but if the date is null, tapestry rise the NPE...
>
> Failure reading parameter 'value' of component expenses/Expenses:date:
> Property 'expense' (within property expression 'expense.date', of
> com.rimsamex.app.expenses.pages.Expenses@1b26a992) is null.
>
>
> So, if the value is null I want to display an empty field, How can I reach
> that?
>
> Thanks in advance!
>
>
>
>
> --
> View this message in context:
> http://tapestry.1045711.n5.nabble.com/datefiled-and-null-value-2-tp5716109.html
> Sent from the Tapestry - User mailing list archive at Nabble.com.
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
> For additional commands, e-mail: users-help@tapestry.apache.org
>
>