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From jni...@free.fr
Subject Re: prepare action for input after validation errors
Date Mon, 08 Sep 2008 21:02:49 GMT
I don't have any input method. I have a displayForm method, and a submitForm method. 

The displayForm method returns an input *result*, which is a default result pointing to a
JSP. This JSP has to display some data coming from the database. I'd like this same JSP to
be displayed when the input *result* is returned by the workflow interceptor after validation
fails. My problem is that I don't know how to make Struts get the data necessary to render
the input JSP. This data is prepared by the displayForm action method when it's displayed
initially, but when the form is submitted and a validation error occurs, Struts goes directly
to the input JSP without calling any action or other method. There is no (AFAIK) equivalent
of the prepare interceptor for *results*.

The way that seems to be suggested by the documentation is to prepare the data by calling
an action from the JSP itself, but I don't like this solution very much because, if the data
preparation method throws an exception, it won't be handled correctly (since the HTML has
already been partly sent to the browser).

I could also chain the actions by making the input result chain to another action method,
but this is discouraged by the doc (see http://struts.apache.org/2.x/docs/action-chaining.html).

JB.

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