For now I tried the last approach, (InjectContainer), but it throws
Caused by: java.lang.NullPointerException
at
org.apache.tapestry5.internal.transform.InjectContainerWorker$1$1.get(InjectContainerWorker.java:80)
It looks like it's not the proper way in my case. Trying other ways.
PS: Just wandering, if the container worker gets null, then it probably
means, that there is no container at all (for my current page, in which I
put the annotation).
2015-10-22 15:40 GMT+02:00 Thiago H de Paula Figueiredo <thiag...@gmail.com>
:
> On Thu, 22 Oct 2015 06:48:34 -0200, g kuczera <gkucz...@gmail.com> wrote:
>
> Hi Guys,
>>
>
> Hi!
>
> I have a custom layout named LayoutM (java class and tml). It is used by my
>> page - Activities - like that:
>>
>> <t:layoutM title="${message:site.title} - ${message:page.title}"
>> bodyClass="dashboard"
>> xmlns:t="http://tapestry.apache.org/schema/tapestry_5_3.xsd";
>> xmlns:p="tapestry:parameter">
>> <!--a lot of stuff -->
>> </t:layoutM>
>>
>> And it implements some kind of interface (class LayoutM implements
>> CustomInterface).
>> Is there a way to pass LayoutM java class object,+
>> to Activities page?
>>
>
> Yes. The recommended way of passing information (objects) around is
> through parameters. When this isn't possible, such as in your case, you can
> use the Environment service. Examples in
> http://tapestry.apache.org/environmental-services.html
> https://tawus.wordpress.com/2011/04/25/tapestry-magic-6-environment/
>
> Is something like that correct (if I put it below "a lot of stuff" line)?
>>
>> <p:fieldName value=${this}></p:fieldName>
>>
>
> No, this isn't correct in two different ways: there's no way to reference
> this in the prop binding (the default one) and, in addition, you shouldn't
> use ${} expansions in parameters. It's always either useless or a bug.
>
> What I can see right now is the "this" being an instance of Activities
>> class. How can I get the parent layout's object?
>>
>
> @InjectContainer
> private Object parentObject; // actually, the field can be of any type you
> want.
>
> But you should try to avoid this, because it couples too much the
> component and its parent. Use the Environment instead.
>
> --
> Thiago H. de Paula Figueiredo
> Tapestry, Java and Hibernate consultant and developer
> http://machina.com.br
>
>
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