Event Handler calling using single hidden input
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Key: STS-233
URL: http://mc4j.org/jira/browse/STS-233
Project: Stripes
Type: New Feature
Reporter: Ryan Stuart
Assigned to: Tim Fennell
Priority: Minor
>From mailing list....
"How about an extension to the AnnotatedClassActionResolver.getEventName() and
<stripes:form> tag. The new form tag should by default include a new hidden
field like so:
<input type="hidden" name="eventHandler" value="">
The name of this hidden from should be set by an ActionResolver property,
perhaps ActionResolver.HiddenEventHandlerName? This property should however
have a sensible default.
The new AnnotatedClassActionResolver.getEventName() should still do what it
does currently. However, instead of returning null when it doesn't find an
appropriate event (using its current searching techniques), it should look for
the "eventHandler=someValue" parameter in the request. If it is found, it
should try match the value ("someValue" in the example given) to an action bean
handler. If it finds a match, it should return the value (ie "someValue" in
this case) or if no match was found, null.
This now lets me write the JavaScript code
"this.form.eventHandler.value='selectedOne';this.form.submit()" in the onchange
(or any other event) of my select (or some other form component). This approach
has the advantage of one hidden input for the entire page no matter how many
selects (or any other form component) i have.
The only draw back is the need for a rather specific configuration parameter.
By, if you just default this to something sensible as suggested, it shouldn't
make it too much of a drama. I have implemented this currently by extending the
NameBaseActionResolver and FromTag classes but as you can imagine it is a
little messy. For it to work well and look a lot cleaner, it needs to be
included in the original source."
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