Setting mutiple backing bean attributes from rich:calender component

[Darren Carr]

Hi Everyone,

I am very much a beginner with JSF and have been asked to do some dev work on an application (original devloper has left the company) and no one here knows JSF that well. So Its time for me to learn and get to grips with the framework.

I been working through quite well and googling and reading has normally found the answer to any problems, however im stuck on one particular probem.

I basically have the following rich:calender component below :

<rich:calendar id="particularDate"
  converterMessage="Please enter a date to search"
  enableManualInput="true"
  value="#{viewBooking.fromRange}"				
  datePattern="dd/MM/yyyy"
  required="true" showFooter="false"
  requiredMessage="Please enter the date"
  validatorMessage="From date must come before To date">
  <a4j:support event="onchanged" ajaxSingle="true" actionListener="#{viewBookingBean.resetForm}"/>
</rich:calendar>

This works fine and sets the backing bean attrubute correctly (viewBooking.fromRange). However is it possible in JSF that this component can set "two" backing bean attributes"? I.E. After the user action I not only set (viewBooking.fromRange) but also (viewBooking.toRange) too?

[Tim Holloway]

Welcome to the JavaRanch, Darren!

You can set the the "toRange" backing bean property by copying the "fromRange" property into it in your "resetForm" action method.

That's half the battle. However, presumably there's a separate calendar control that displays and controls "toRange", so your a4j:support tag needs to ensure that that control is updated in the View. Use the "reRender" attribute to indicate the id of that control so that it will be refreshed from the updated backing bean.

[Darren Carr]

Hi Tim,

Thank you very much for the reply...

I was unable to put the logic into resetForm as the method is in the superclass of my backing bean (viewBookingBean)

public class viewBookingBean extends AbstractPageBean implements IBookingVersionViewerBean

What I have done is created an atrribute in my backing bean called fromToRange which sets two values I require

public void setFromToRange(Date fromToRange) {
		this.fromToRange = fromToRange;
		this.fromRange = fromToRange;
		this.toRange = fromToRange;
	}

My form looks like this, which has thee rich calenders..

<br /><b>Download live booking data using single date</b> 

<a4j:region id="myparticulardate" renderRegionOnly="true">
				<h:panelGrid columns="3" styleClass="client-details-table" cellspacing="0" columnClasses="first-col,second-col,third-col" rowClasses="cd-odd-row" >			
					<h:outputText value="Date: " />
					
					<rich:calendar id="particularDate"
						converterMessage="Please enter a valid date"
						enableManualInput="true"
						value="#{viewBookingBean.fromToRange}"						
						datePattern="dd/MM/yyyy"
						required="true" showFooter="false"
						requiredMessage="Please enter the date"
						rendered="true"
						validatorMessage="From date must come before To date">
						<a4j:support event="onchanged" ajaxSingle="true" actionListener="#{viewBookingBean.resetForm}" />
						</rich:calendar>
					<h:panelGrid columns="1" />
				</h:panelGrid>
			</a4j:region>
			
			
			<h:panelGrid columns="1" styleClass="client-details-table" cellspacing="0" columnClasses="first-col,second-col,third-col" rowClasses="cd-odd-row">
				<h:outputText value="Please be patient when the download proceeds." />
			</h:panelGrid>
			
			<h:panelGrid columns="3" styleClass="client-details-table" cellspacing="0" columnClasses="first-col,second-col,third-col" rowClasses="cd-odd-row">
				<h:outputText value=" " escape="false" />
				<h:outputText value=" " escape="false" />
				<h:commandLink action="#{viewBookingBean.next}" value="Download data as CSV" />
			</h:panelGrid>
			
		<br /><b>Download live booking data between two dates</b>
				
			<a4j:region id="mydateregion" renderRegionOnly="true">
				<h:panelGrid columns="3" styleClass="client-details-table" cellspacing="0" columnClasses="first-col,second-col,third-col" rowClasses="cd-odd-row">			
					<h:outputText value="From: " />
					<rich:calendar id="fromDate"
						converterMessage="Please enter a valid From date"
						enableManualInput="true"
						value="#{viewbookingBean.fromRange}"
						datePattern="dd/MM/yyyy"
						required="true" showFooter="false"
						requiredMessage="Please enter the From date"
						validatorMessage="From date must come before To date">
						<a4j:support event="onchanged" ajaxSingle="true" actionListener="#{viewBookingBean.resetForm}"/>
						</rich:calendar>
					<h:panelGrid columns="1" />
			
					<h:outputText value="To: " />
					<rich:calendar id="toDate"
						converterMessage="Please enter a valid To date"
						enableManualInput="true"
						value="#{viewBookingBean.toRange}"
						datePattern="dd/MM/yyyy"
						required="true" showFooter="false"
						requiredMessage="Please enter the To date"
						validatorMessage="To date must come after From date"
						validator="#{viewBookingBean.checkDateRange}">
						<a4j:support event="onchanged"
							ajaxSingle="true" actionListener="#{viewBookingBean.resetForm}"/>
						</rich:calendar>
					<h:panelGrid columns="1" />
				</h:panelGrid>
			</a4j:region>
			
			<h:panelGrid columns="1" styleClass="client-details-table" cellspacing="0" columnClasses="first-col,second-col,third-col" rowClasses="cd-odd-row">
				<h:outputText value="Please be patient when the download proceeds." />
			</h:panelGrid>
			
			<h:panelGrid columns="3" styleClass="client-details-table" cellspacing="0" columnClasses="first-col,second-col,third-col" rowClasses="cd-odd-row">
				<h:outputText value=" " escape="false" />
				<h:outputText value=" " escape="false" />
				<h:commandLink action="#{viewBookingBean.next}" value="Download data as CSV" />
			</h:panelGrid>

However when all three dates are filled in and I click the "Download data as CSV" button on the first form , all three setters are called wheres my values of fromRange and toRange are overwittten.

public void setFromToRange(Date fromToRange) {
		this.fromToRange = fromToRange;
		this.fromRange = fromToRange;
		this.toRange = fromToRange;
	}

public void setFromRange(Date fromRange) {		
		this.fromRange = fromRange;
	}

public void setToRange(Date toRange) {
		this.toRange = toRange;
	}

Is there a way that I can stop this from happening so that only the setters of the particular component are called (e.g setFromToRange )

Thnaks for the help :-)