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Raj R. How to create a button that calls apex calls that does future callout?
Hi,
We have a need to create a button that on click will take the current Opportunity data (some fields) and pass it into the apex class (that is a future callout) so it can execute the logic in the class.
How would i do this?
We have a need to create a button that on click will take the current Opportunity data (some fields) and pass it into the apex class (that is a future callout) so it can execute the logic in the class.
How would i do this?
//class that does future callout to some endpoint
class Sample {
@future(callout=true)
public sendCallOut() {
//some action using the current opportunity
HttpRequest req = new HttpRequest();
//add the appropriate headers
///put opportunity data in the body of request
HTTPResponse resp = new HTTPResponse();
//send and process request
}//end sendCallOut()
}//end Sample
To do this I'd create a custom controller APEX class, put the method in that, then create a Visualforce page with nothing in it and call the method from the controller.
I'd then create a custom URL button that called that visualforce page with the record Id appended to the URL so it could be passed into the controller and used referenced in the call out method
I havent tested the below but something like:-
controller:-
public class myFutureButtonController{ private String opportunityId ; public myFutureButtonController() { //get the opportunityId this.opportunityId = ApexPages.CurrentPage().getparameters().get('thisOppId') //custom parameter name, make sure this is used in the custom button if(opportunityId != null) //don't queue the job unless we have the id to pass in { sendCallOut(opportunityId); //call the future method and let it know the id of the opty you want it to work with } } @future(callout=true) public sendCallOut(String oppId) { //some action using the current opportunity Opportunity theOppRecord ; List<Opportunity> lo = new List<Opportunity>([select id, any other fields for the call out etc from Opportunity where Id = :opportunityId]); //query as a list even if you only want one record to avoid no object found to assign to sobject variable error if(lo.size() > 0) //only do the call out if you have the data needed theOppRecord = lo[0]; //now use the query result theOppRecord to complete any pre call out logic HttpRequest req = new HttpRequest(); //add the appropriate headers ///put opportunity data in the body of request HTTPResponse resp = new HTTPResponse(); //send and process request } else { //handle the error, send the user an email/post to chatter} }//end sendCallOut() }visualforce page called myPage
the button - create one that directs to a URL
enter this url /apex/myPage?thisOppId={!OpportunityId}
add to opportunity page layout
Hope this helps you get started
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