I wonder what I was thinking... how could this ever be solved with an iFrame?
Anyway, I solved it by setting, reading and submitting a cookie value using javascript. This was possible as the both web applications share the same parent domain.
This was the two javascript functions required:
<script type="text/javascript">
function getCookie(name) {
var nameEQ = name + "=";
var ca = document.cookie.split(';');
for(var i=0;i < ca.length;i++) {
var c = ca[i];
while (c.charAt(0)==' ') c = c.substring(1,c.length);
if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
}
return null;
}
function setSaeInfoAndSubmit(aForm) {
aForm.elements[aForm.elements.length-2].value += getCookie('SAE_INFO');
aForm.submit();
}
</script>
And it's triggered by the onclick event of the form button (previously a submit button).
<input type="button" value="<liferay-ui:message key=" send">" onclick="javascript:setSaeInfoAndSubmit(this.form);" />
Now, good or not, it works. Is there a smarter, more maintainable way of doing it? How would you have solved it?
