Populate dropdown
I have a dropdown menu with 5 values. As of now the name value pairs are hard coded and added into my collection object in the backing bean.
Now I want to fetch this list of 5 name value pairs from the properties file and populate my collection object.
Problem here is that I don't have a clue, how to define a name value pair list in my properties file and how do I retrieve the same.
All I can think about is place the data as a CSV string and later parse it after fetching it. Any suggestions or pointers to implement the above, please let me know.
SirG
# 2
>I have a dropdown menu with 5 values. As of now the name value pairs are hard coded and added into my collection object in the backing bean.
well ru you refering to the one with JSF(BackingBean) ?
if it is here is a typical example where we can acheive it.
If you want to access ResourcesBundle using Backing and then create a List of Select items and then
populate in the Page View.
ProjectResourcesBundle.properties:
==================================
-
-
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# default values always insert in form of key=value pairs
proj.dropdown.value=US,UK,UAE,GERM,IND,SL,AUS
proj.dropdown.text=United States,United Kingdom,United Arab Emrites,Germany,India,Srilanka,Australia
-
-
-
Editing Message Resource Bundle with diffrent drop down values & labels separated by ","
with keys proj.dropdown.value & proj.dropdown.text
faces-config.xml:
=================
<!-- points to WEB-INF/classes/ProjectResourcesBundle.properties file -->
<application>
<message-bundle>ProjectResourcesBundle</message-bundle>
</application>
<managed-bean>
<managed-bean-name>UiBean</managed-bean-name>
<managed-bean-class>com.uiBean.UiBackingBean</managed-bean-class>
<managed-bean-scope>request</managed-bean-scope>
</managed-bean>
Configuring faces-config.xml file accordingly.
Sample jsp view :
=================
<f:view>
<h:form>
<!-- the dropdown box -->
<h:selectOneMenu id="DropDown" value="#{UiBean.ddValue}">
<f:selectItems value="#{UiBean.ddList}"/>
</h:selectOneMenu>
</h:form>
</f:view>
UiBackingBean:
==============
public UiBackingBean{
private List ddList;
private String ddValue;
private ResourceBundle bundle;
public UiBackingBean(){
ArrayList value = new ArrayList();
ArrayList txt = new ArrayList();
this.ddList = new ArrayList();
String bundleName = FacesContext.getCurrentInstance().getApplication().getMessageBundle();
Locale locale = FacesContext.getCurrentInstance().getApplication().getDefaultLocale();
//Locale locale = FacesContext.getCurrentInstance().getViewRoot().getLocale();
// reading the configured resource bundle & exctracting values with hardcoded keys
this.bundle = ResourceBundle.getBundle (bundleName,locale);
String values = this.bundle.getString("proj.dropdown.value");
String text = this.bundle.getString("proj.dropdown.text");
StringTokenizer st = new StringTokenizer(values,",");
while(st.hasMoreElements()){
value.add(st.nextElement());
}
st = new StringTokenizer(text,",");
while(st.hasMoreElements()){
txt.add(st.nextElement());
}
for(int i = 0; i < values.size() ; i++){
SelectItem si = new SelectItem(value.get(i),txt.get(i));
this.ddList.add(si);
}
}
public void setDdList(List ddList){
this.ddList = ddList;
}
public List getDdList(){
return this.ddList;
}
public void setDdValue(String ddValue){
this.ddValue = ddValue;
}
public String getDdValue(){
return this.ddValue;
}
}
else if you wanna use normally you may go about and use it by creating a variable in the viewing page & use its keys using EL.
by <f:loadbundle basename="ProjectResourcesBundle" var="variable" />
and value using EL "#{variable['KeyName']}"
hope that might help :)
REGARDS,
RaHuL
