The design pattern that we are starting to play with is to create beans
specifically for the forms. Then write code that ferries the data
between the form-bean and the actual persistent objects.
This gives you more grunt work, but it adds a point of abstraction and
flexibility. For the most part it gives you freedom to construct your
form/ui differently than the underlying persistent model. For example,
all validator/data type annotations are tied to the form-bean instead of
the underlying persistent model, which might not match cleanly. Also
your persistent model might not be what you actually want to expose to
the form. Or you can expose a more complicated form which maps to
persistent model in different ways (multiple objects, etc etc).
At the moment, it's not as "easy" as just giving the bean edit form your
persistent objects, but I think it's more flexible in the long run. So
it's just another option to keep in mind. You just have to keep your
form-beans outside of the components/pages packages or you'll have
issues with the tapestry enhancing classloaders.. We keep them under a
forms package..
Filip S. Adamsen wrote:
Well, you're right. But to me, at least, it's not that big of a deal.
The dependency will be to tapestry5-annotations, which is a very small
dependency.
Anyhow, developing Tapestry apps is just a hobby of mine - for now,
anyhow - so I make the decisions myself.
Sadly, I don't know of any other way to specify which constructor to
use. I suggest you raise a JIRA issue if you want an alternative way to
do it.
-Filip
On 2008-05-28 20:13, José Paumard wrote:
Hello Filip,
From what I understand, that would involve changing the object model
(not so nice, I dont have the hand on that), and making a dependency
from this model to T5. I can already hear ppl screaming at that ;)
Am I right ?
Thank you,
José
Filip S. Adamsen a écrit :
Hi José,
You can put @Inject in the constructor you want Tapestry to use for
auto-instantiation. Should solve your problem.
-Filip
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