Passing Parameter Value to the Apx(server-side controller) in lightning

Question

I am very new in Lightning App Development. I am getting an error this error(Uncaught error in $A.run() : component is not defined) When i want to pass the component value to the Apex(Server-Side Controller) in lightning using JS(Client-Side Controller).

Here is my Code for my Code

COMPONENT

CLIENT SIDE

SERVER SIDE CONTROLLER

Answer 1

One problem is that in your button, the press attribute shouldn't be written as a merge field.

<ui:button label="Go" press="c.search" />

You also have a misspelling in your client-side controller. It should be:

search : function(component, event, helper){ 

You might be getting the message "component is not defined" because the variable was named "componet"

Also, you could also simplify you server-side controller if you wanted: (unrelated to the error)

public class CheckinCntrlr{
    @AuraEnabled
    public static String checkfoundevent(String ticketid1){
        Ticket__c obj = [
            SELECT Event_Product__r.Event__c.Name 
            FROM Ticket__c
            WHERE Id = :ticketid1
        ];
        return obj.Event_Product__r.Event__c.Name;
    }
}