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$this.db.get store as variable for global use

  • 22 February 2017
  • 1 reply
  • 25 views
K
Rank

Hi Support,




May I know can $this.db.get can pass the result into and stored as variable for global variable? In the following, the "return data.aws_ticket_id" has indeed stored the id value, but I have struggling to find out the way to use it in global context




  GetStoredData : function(f_ticket_id) {   

       this.$db.get("ticket: " + f_ticket_id + "").done(function(data) {
         return data.aws_ticket_id;       
       })   
       .fail(function(err) {
         return err;
       });
     }




I have tried first declare in global context:


var f_ticket_id = domHelper.ticket.getTicketInfo().helpdesk_ticket.display_id;




then


console.log(self_GetStoredData(f_ticket)); --> return "undefined"




Appreciate your help!




Keen


This topic has been closed for comments

1 reply

R
Rank

All of this.$db operations are asynchronous. In case of asynchronous operations, values cannot be returned. So callbacks must be used to pass the values.




Example:


GetStoredData : function(f_ticket_id, callback) {   


    this.$db.get("ticket: " + f_ticket_id + "").done(function(data) {


      callback(null, data.aws_ticket_id);       


    })   


    .fail(function(err) {


      callback(err);


    });


}




Calling the function


GetStoredData(f_ticket_id, function(err, data) {


    //err & data


});




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