Re: T5: help required: Context and PageLink

[Tobias Wehrum]

Hi,

the problem is not your pagelink, the problem is your stylesheet link. 
When it trys to load, it seems to search in "viewMetadata/style.css", 
thus being passed as an activation context which of course cannot be 
coerced to long.

Anyway, in my opinion the best way to pass the stylesheet is the 
@IncludeStylesheet-Annotation.

@IncludeStylesheet("context:/style.css")
class ViewMetadata {
[...]
}

An alternative and something you might need when including images, for 
example, is by using Assets:

viewMetadata.java:
----------------------------------------------------------------------------
@Inject
@Path("context:/style.css")
@Property
Asset cssFile;
----------------------------------------------------------------------------

viewMetadata.tml
----------------------------------------------------------------------------

<link href="${cssFile}" rel="stylesheet" type="text/css">

----------------------------------------------------------------------------

More on Assets: http://tapestry.apache.org/tapestry5/guide/assets.html

- Tobias

tapestryphoto schrieb:

I have a PageLink thus:

<t:PageLink t:page="viewMetadata" 
t:context="listItem.metadata.metadataId">
  &gt;
</t:PageLink>


and code thus:

public void onActivate(long metadataId)
{
        System.out.println("METADATA ID = "+metadataId);
        this.metadata = repository.getMetaDataById(metadataId);
}


Although every time I click on the link I get taken to the correct 
page and the passed value is printed out correctly, I also get the 
following exception:

[ERROR] TapestryModule.RequestExceptionHandler Processing of request 
failed with uncaught exception: Exception in method 
dportal.pages.ViewMetadata.onActivate(long) (at ViewMetadata.java:20), 
parameter #1: Coercion of style.css to type java.lang.Long (via String 
--> Long) failed: For input string: "style.css"
org.apache.tapestry5.runtime.ComponentEventException: Exception in 
method dportal.pages.ViewMetadata.onActivate(long) (at 
ViewMetadata.java:20), parameter #1: Coercion of style.css to type 
java.lang.Long (via String --> Long) failed: For input string: 
"style.css"


This occurs even when hard-coding the value thus:

<t:PageLink t:page="viewMetadata" t:context="5">
  &gt;
</t:PageLink>


So, what have I done wrong?


p.



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