Pass value from OnClick JavaScript Detail Page Button to a Controller

Question

Good morning. Is there a way to pass a value from an OnClick Javascript Detail Page Button to a Controller other than the controller that the button is on?

This is my JavaScript:

{!REQUIRESCRIPT("/soap/ajax/26.0/connection.js")}
{!REQUIRESCRIPT("/soap/ajax/26.0/apex.js")}

var engID=window.sfdcPage.entityId
var postType="statement of work";   

window.location="https://rsidemo1-dev-ed--c.na24.visual.force.com/apex/VfFilePost?scontrolCaching=1&id="+engID;

I want to assign postType to a variable in the controller of the VfFilePost Page. I am new to Salesforce and programming. Any help is appreciated.

Answer 1

You could pass it as an encoded URL parameter:

{!REQUIRESCRIPT("/soap/ajax/26.0/connection.js")}
{!REQUIRESCRIPT("/soap/ajax/26.0/apex.js")}

var engID=window.sfdcPage.entityId
var postType="statement of work";   

window.location="https://rsidemo1-dev-ed--c.na24.visual.force.com/apex/VfFilePost?scontrolCaching=1&id="+engID+"&postType="+EncodingUtil.urlEncode(postType, 'UTF-8');

And then retrieve and decode it in your recipient controller:

String rawPostType = ApexPages.currentPage().getParameters().get('postType');
String postType = EncodingUtil.urlDecode(rawPostType, 'UTF-8');

Answer 2

VF Page - Action function<br><apex:actionFunction name="sendpostType" action="{!sendpostType}" rerender="pb">
<apex:param name="x" value="" assignTo="{!postTypeValue}" />

javascript code:

      sendpostType(postType);

controller code:

public class TestController{
public string postTypeValue{get;set;}

public TestController(){
postTypeValue = '';
}
public void sendpostType(){
system.debug('postTypeValue' + postTypeValue);
}
}