How to update a selectonemenu depending on other one selected value?

Question

I\'ve been having a trouble trying to make my selectOneMenu content, depend on the value selected on the other. The content from the first one comes from a tabl

Answer 1

1. value="municipio" in means that the value in that dropdown will never change as you've effectively hardcoded the value on that field to always be municipio (and even that will fail conversion). The value attribute should be bound to a backing bean variable as in

   and in your backing bean, have

      Municipio municipio;
     //getter and setter
   

2. Remove the parameter event from . It should be

3. Remove valueChangeListener="#{beanInscripcion.buscarMunicipios(event)}". It's unnecessary because you already have a event defined

4. You will eventually run into problems submitting that form because you haven't created a JSF Converter for that Municipio custom type. It's mandatory if you're using anything other than String types in your select components. See a short intro to converters/converting here