Re: [jira] Created: (TAPESTRY-331) Simplified insert binding template syntax

[Richard Lewis-Shell]

I don't much like this idea (-1).  I agree that we don't need yet 
another way of declaring a component in a template, especially one that 
is completely different to the existing templating syntax.  What 
happened to "less is more"?  This feels like "more is less" to me :-(

Richard
Howard M. Lewis Ship (JIRA) wrote:
Simplified insert binding template syntax
-----------------------------------------
         Key: TAPESTRY-331
         URL: http://issues.apache.org/jira/browse/TAPESTRY-331
     Project: Tapestry
        Type: New Feature
  Components: Framework  
    Versions: 4.0    
    Reporter: Howard M. Lewis Ship
    Priority: Minor
     Fix For: 4.0

It would be desirable to support a simplified syntax for obtaining data via bindings 
and inserting it.  A proposal has been to adopt ant-like syntax ("${...}") and 
interpret the expression within the braces as a binding reference.  This would eliminate 
the need for many Insert components, i.e.:
<h1>${thread.title}</h1>
rather than:
<h1><span jwcid="@Insert" value="thread.title"/></h1>
Or:
${message:prompt}
rather than:
<span key="prompt"/>
This kind of substitution is less invisible, but generally less intrusive, 
than creating a new component.
Further, the use of the Any component could be reduced via support for:
<img src="${imagePath}"/>
rather than:
<img jwcid="@Any" src="ognl:imagePath"/>
Some questions occur; are the following legal?
<${element}> ... </${element}>
<img jwcid="@Image" src="${asset:foo}"/>
<div ${attribute}="${value}"/>
A final note: these bindings should be treated as we treat informal 
parameters today; this includes automatically expanding IAssets into their 
corresponding URLs.
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