RE: [Springframework-developer] Using PropertyEditors in JSPs

[<jue...@we...>]

Hi Alef,

That sounds interesting, and it should be pretty easy to integrate. But =
for the sake of getting 0.9.1 out ASAP, I suggest to hold it back for =
after the release, just like the Tiles integration. I guess we will =
release a 0.9.2 follow-up at end of August anyway, all that stuff should =
fit in there in polished and tested versions.

BTW, I really like the extensive Javadoc that you added to some of the =
web controller classes, especially the explanations of the workflows! =
Very, very welcome :-)

Juergen


-----Original Message-----
From: Alef Arendsen (JTeam) [mailto:al...@jt...]
Sent: Wednesday, July 30, 2003 1:55 PM
To: spr...@li...
Subject: [Springframework-developer] Using PropertyEditors in JSPs



Everyone,=20

I've made an addition to the BindStatus and BindTag and added a =
TransformTag (the name is still open for discussion) I wanted to discuss =
with you before adding it.

When using <spring:bind>, a BindStatus object is instantiated for the =
path (on the command class) I'm setting in the tag. Also, any =
PropertyEditors that are associated to that field or type of property =
are consulted to get the appropriate String representation for the =
property. However, right now it's not possible to also retrieve String =
representations for any referenceData I've bound in the requestContext.

Consider the following:=20

*	I want to add a user and the user has a property called language =
(preferred language, with associated getLocale() and setLocale() =
methods)=20

*	Using a formcontroller I've returned the formBackingObject as well as =
some referenceData (in this case, a list of Locale objects from which =
the user wants to choose)=20

*	To be able to let the user choose one of the locale objects and let =
the framework set the right locale using the associated LocaleEditor, I =
need to be able to make consult the LocaleEditor for the locales in the =
list as well=20


I thought of the following to make this work. Everything enclosed by =
<spring:bind>-tags applies to a certain path of the command object and =
therefore (if applicable) an associated PropertyEditor. So anything =
enclosed by those tags could be rendered using that specific =
PropertyEditor as well.

The attached example shows the final JSP used to implement the above =
usecase.=20

Modification that need to be made to add this functionality are the =
following:=20


*	getCustomerEditor()-method to BindTag and Errors interface (and =
corresponding implementations in BindException and EscapedErrors =
(returning the appropriate editor or null if not applicable or not =
found)=20

*	Addition of transform-tag to be used inside bindtag=20


The only thing I'm not sure about is the first modification...=20

Any comments, objections or remarks about the implementation?=20

Alef=20

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