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Monday, 23 September 2013

Dynamically enable or disable items of ADF bound List (af:selectOneChoice) -Oracle ADF

Hello All,
This tutorial is about a requirement of conditionally enabling/disabling items (values) of adf bound List (af:selectOneChoice) component
here i am taking reference of default HR Schema (Departments and Location table )

See the steps-
  • Create a Fusion Web Application and business components using both tables
  •  Now create List of Values (Lov) on locationId of departments VO from Location VO
  • Set List Attribute to LocationId and for UI city will be shown
  • Now Drag Departments VO from Data Control on page as a form
  •  Select LocationId list field and delete f:selectItems from it, now drag af:selectItem as child of af:selectOneChoice and surround it with af:forEach 

  • Add tree binding of Location ViewObject to page bindings in order to populate list items using forEach
  •  Now select af:forEach and set its property and variable name, as we have to iterate through Location VO for list items
  •  Again select af:selectItem and set its value and label property using forEach variable's  
  • Now run your application, and see that list box is ready with values
  • Now we have to disable its values as a condition basis, i have written an Expression on af:selectItem's disabled property

  • I have written condition for DepartmentId 100 and 110, see in source of page

  • <af:selectOneChoice value="#{bindings.LocationId.inputValue}" label="#{bindings.LocationId.label}"
                                            shortDesc="#{bindings.LocationId.hints.tooltip}" id="soc1"
                            <af:forEach items="#{bindings.Locations1.rangeSet}" var="list">
                                <af:selectItem label="#{list.City}" id="si1" value="#{list.LocationId}"
                                               disabled="#{ (bindings.DepartmentId.inputValue==100 and (list.LocationId==1000 || list.LocationId==1300)) || (bindings.DepartmentId.inputValue==110 and (list.LocationId==1500 || list.LocationId==1600 || list.LocationId==1700 || list.LocationId==1800 || list.LocationId==1900))}"/>

  • Now value given in Expression for Location Id will be disabled for given Department
  • Run your page and select DepartmentId 100 and 110 to see disabled list items

 Download Sample App Cheers :-)

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