Question

in tapestry we can use the component in two ways

<t:type="grid" t:source="persons" t:row="person" t:encoder="personEncoder" t:include="id,firstname,lastname,startdate" t:add="delete"\>

or we can use

<t:grid source="persons" row="person" encoder="personEncoder" include="id,firstname,lastname,startdate" add="delete"></t:grid>

So my question is that is there any difference or specific reason to use the components in two different way?

Regards,
Mahendra Athneria

Answer 1

Does the first one really work? I think you mean

<table t:type="grid" ... />

vs.

<t:grid ... />

If so, there is no functional difference. I always prefer using the first style because it looks like proper HTML with instrumentation instructions for Tapestry, rather than just a bunch of Tapestry-specific tags.

The t: prefix for component parameters refers to the Tapestry namespace and is the clean way to define value bindings. Both styles will work with either t: present or omitted, as it is optional in most places, except in the odd case when it is not. (For example, you’ll sometimes want both id and t:id on Zone components, and they’ll actually mean different things.)

TL;DR: Use the <table t:type="grid" t:source="" ... /> style.