Gfrktyl

The apex:param is not passing the contact value to backend. Please correct me where i am going wrong.

 <apex:pageblocktable value="{!lstWrapContactRoles}" var="cr" id="pbt" >

                <apex:column headerValue="Contact">

                    <apex:inputfield value="{!cr.objConRole.Contact__c}" onchange="if(this.value){addfunc();}" id="conId"> <!-- US 410 -->

                      <apex:param name="personID" value="{!cr.objConRole.Contact__c}" assignTo="{!Contactid}" />

                    </apex:inputfield>

                </apex:column>





        <apex:actionfunction name="addfunc" action="{!addNew}" reRender="pbt" oncomplete="codeAddress();checkboxuse();"/>

Apex:

public Id Contactid {get; set;}





  Public vooid addnew(){

system.debug('=='+System.currentPageReference().getParameters().get('personID'));

    system.debug('strContactid'+ApexPages.currentPage().getParameters().get('Contactid')); 



}

Both the debugs are null.

You have few things wrong here. From documentation:

The <apex:param> component can only be a child of the following components:

• <apex:actionFunction>


• <apex:actionSupport>


• <apex:commandLink>


• <apex:outputLink>


• <apex:outputText>


• <flow:interview>

Whereas, you are using <apex:param> as a child for <apex:inputField>.

Then, you access the values of the param that has been set using the assignTo using getter/setter method, whereas you are trying to access it from a request attribute on the page.

You'll need to review your implementation as what you are trying to achieve, but a typical implementation will look like as:

<apex:actionFunction>    

    <apex:param name="personID" value="{!cr.objConRole.Contact__c}" assignTo="{!ContactId}" />

</apex:actionFunction>

and then in the Apex, you access it as:

public Id ContactId {get; set;}



public void addnew(){

    // just use the variable as declared in the class here        

    system.debug('Contact Id assigned is:' + ContactId); 

}

The apex:param must be a child of the action function.

<apex:inputfield value="{!cr.objConRole.Contact__c}" onchange="if(this.value){addfunc('{!cr.objConRole.Contact__c}');}" id="conId">

...

<apex:actionfunction name="addfunc" action="{!addNew}" reRender="pbt" oncomplete="codeAddress();checkboxuse();">

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

</apex:actionfunction>