This content has been marked as final.
Show 3 replies
-
1. Re: Chained select boxes
damianharvey Dec 14, 2007 10:41 AM (in response to syzork)It's friday, my pub lunch is settling nicely and I'm feeling verbose, so here's a very basic example (probably some syntax errors but you get the drift):
@Name("citySelectionBean") @Scope(ScopeType.CONVERSATION) // <---- This is important. You could also use SESSION or a stateful bean public class CitySelectionBean { String country; String state; String city; public List<String> getCountries() { return entityManager.createQuery("select c from Country c").getResultList(); } public List<String> getStates() { List<String> states = new ArrayList<String>(); if(this.country != null) { return entityManager.createQuery("select s from State s where s.country = :country") .setParameter("country", this.country) .getResultList(); } return states; } public List<String> getCities() { List<String> cities = new ArrayList<String>(); if(this.state != null) { return entityManager.createQuery("select c from City c where c.state = :state") .setParameter("state", this.state) .getResultList(); } return cities; } }
And your page:<h:selectOneMenu id="country" value="#{citySelectionBean.country}"> <s:selectItems value="#{citySelectionBean.countries}" var="country" label="#{country}"> <a:support event="onchange" reRender="state, city"/> </h:selectOneMenu> <h:selectOneMenu id="state" value="#{citySelectionBean.state}"> <s:selectItems value="#{citySelectionBean.states}" var="state" label="#{state}"> <a:support event="onchange" reRender="city"/> </h:selectOneMenu> <h:selectOneMenu id="city" value="#{citySelectionBean.city}"> <s:selectItems value="#{citySelectionBean.cities}" var="city" label="#{city}"> </h:selectOneMenu>
Also create a page.xml file and ensure that you have something like <begin-conversation> in it.
Hope this helps.
Cheers,
Damian. -
2. Re: Chained select boxes
pmuir Dec 14, 2007 11:11 AM (in response to syzork)"damianharvey" wrote:
It's friday, my pub lunch is settling nicely and I'm feeling verbose, so here's a very basic example
Tehehe. -
3. Re: Chained select boxes
pmuir Dec 18, 2007 4:26 PM (in response to syzork)"syzork" wrote:
seam-ui example is not working.
How?