jsf - How to pre-select data in h:selectManyListbox -

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this question has answer here:

this common problem , saw basic solution (populate selectmanylistbox). here code of jsf 1.2 page:

<h:selectmanylistbox id="statusmenu" converter="statusconverter" value="#{aprvaction.ap.statuses}" >     <f:selectitems id="statusitem" value="#{action.ap.statusitens}"/>     <a:support event="onclick" ajaxsingle="true" immediate="true" eventsqueue="queuegeral" />     <a:support event="onchange" ajaxsingle="true" eventsqueue="queuegeral" process="statusmenu"/> </h:selectmanylistbox>

the thing #{aprvaction.ap.statuses} instance of list<status> class. however, in tag <f:selectitems> value: #{action.ap.statusitens} instance of list<selectitem>.

i populate the #{aprvaction.ap.statuses} values want pre-select listbox, did not work. think it's because different objects in <selectmanylistbox> , <selectitems>.

how can solve this, , show pre-selected values in <selectmanylistbox>?

jsf use equals() method compare available items (pre)selected items.

in case of standard objects, such string, already implemented.

in case of custom objects, such status entity, it's responsibility make sure you've implemented equals() (and hashcode()) method in class.

see also:


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