The wrong codes are:
For a4j jsf use ',':
<a4j:support event="onchange" reRender="parent,child1,child2" />
You can render multiple components with single f:ajax
. Just make sure all individual components you want to update have an id
. In your sample it would be something like:
<f:ajax execute="search_form" render="linear1 linear2"/>
Where the IDs need to be separated by just whitespace like linear1 linear2
and not commaseparated like linear1, linear2
(that works only in p:ajax
).
See also: