Pass Javascript values inside iteration component

Question

I'm trying to add a lookup field inside a pageblocktable iteration component.

I have the following code:

VF:

<apex:column headerValue="Contact" headerClass="ct" >

    <apex:inputField value="{!c.Contactid}" id="inputField"/>

    <apex:inputHidden id="hdnField" value="{!contactId}" />

    <apex:commandLink value="+" styleClass="btn" style="color:red;font-size:15px;" onclick="setVar();" action="{!updateCase}" >

        <apex:param name="caseId"
                    value="{!c.Id}"
                    assignTo="{!caseId}" />

        <apex:param name="contactId"
                    value="{!contactId}"
                    assignTo="{!contactId}" />                            

    </apex:commandLink>       

</apex:column>

Javascript:

function setVar(){
    j$ = jQuery.noConflict();
    var newId = j$('[id$=inputField_lkid]').attr( "value" )
    j$('[id$=hdnField]').val(newId);
}

Apex Controller:

public Case currentCase{get;set;}
public Id caseId {get;set;}

public void updateCase() {

    this.currentCase = [SELECT Id FROM Case WHERE Id = :caseId];
    currentCase.ContactId = this.contactId;
    update currentCase;

}

However when I click the button the new contact ID is not being passed to the controller, instead it's a blank value(case Id works fine). Does anybody have an idea where I'm going wrong?

Answer 1

Your controller method is declared using the keyword void. That means it doesn't return anything. What it does do is initiate a query based on the a selected case using the caseId. From there it updates the currentCase using a supplied ContactID.

Your JQuery function is getting the contactId and setting it for you. What I don't see is where or how the ContactId is being passed into the updateCase() method.

You'll notice that the method references this.currentCase, but I see no mention of ContactId and it's not a parameter that's specified in the method. Unless you have a getter for the contactId that functions with that same action method, you may need to add an additional method that supports passing the value along the lines of what's below:

public void updateCase(Id ContactId) {

    this.currentCase = [SELECT Id FROM Case WHERE Id = :caseId];
    currentCase.ContactId = this.contactId;
    update currentCase;

}

With the above, it doesn't appear that you're passing the new contactId into the method and/or you may not have the caseId being passed along with it too as it needs both sent at the same time.