1) Define a java script that takes the action you want as an argument
and submits the form with it, e.g.:
<SCRIPT>
function refresh(url) {
var form = document.forms[0];
form.action = url;
form.submit();
}
</SCRIPT>
2) Reference the procedure in one of the struts "on*" attributes, e.g.:
<html:select property="foo" onchange="refresh('somewhere.do')"/>
A couple of caveats:
- The <html:submit> tag names the button "submit", so when you attempt
to invoke form.submit(), javascript chokes because it thinks you're
referencing the button. To solve this, use the "property" attribute on
the <html:submit> to call it something else. I use "OK".
- Make sure you don't have a property/field in your JSP/Form called
"action". You'll run into the same problem as with the submit.
- Hardcoding the action strings is a bad idea, because you have to
include the name of the webapp, or get tricky with relative URLs. Use
<html:rewrite>. However, the JSP compiler won't recognize
<html:rewrite> that inside nested quotes, so you couldn't just change
the 'somewhere.do' above to "<html:rewrite page='somewhere.do'">. Put
the rewrite into a simple string variable and then concatenate to it, or
refer to the strings symbolically. For example, the above javascript
procedure might be:
<script>
function refresh(verb) {
var form = document.forms[0];
if (verb == "create") {
form.action="<html:rewrite page='/widget/create.do'/>";
} else {
form.action="<html:rewrite page='/widget/edit.do'/>";
}
form.submit();
}
</script>
and then in the html tag you would put:
<html:select property="foo" onchange="refresh('create')"/>
HTH
sjt
>
> Hi,
> If I have to submit the JSP page when I use struts 1.0.2 with
> the form action changing dynamically based on user action,
> how do I set the action field using javascript? If anyone has
> any suggestions please pass them to me.
>
> Thanking you in anticipation
>
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