Passing Array of sObject to Apex from Lightning Component

Question

I am trying to pass array of sObject to Apex controller in Lightning but it is not working.

createOwner : function(component, event, helper) {
    console.log('$$$$$$Test: '+ component.get("v.ownerList"));
    var action = component.get("c.createAdditionalOwner");
    action.setParams({
        "newOwnerList": component.get("v.ownerList")

    });
    action.setCallback(this, function(response){
        var state = response.getState();
        if (component.isValid() && state === "SUCCESS") {
            console.log('$$$$$Check: '+ a.getReturnValue());
        }
    });
    $A.enqueueAction(action);
}

newOwnerList is List of Record and this is the parameter used in Apex method. ownerList is Array of Account used in component.

@AuraEnabled
public static String createAdditionalOwner(List<Visit_Owner_Institution__c> newOwnerList){
    System.debug('$$$$$Check: '+ newOwnerList);
    return 'Success';

}

Answer 1

The javascript controller stores the list as Object[] and not your as sObject[].

Since you say when you pass a string it works fine, there are two workarounds for it.

1. Json string as an attribute You can convert the sobject list in javascript to a json string and then deserialize it in apex using JSON.deserializeand covert it to the required sobject type.

Find more here

2. Use Object[] as an argument in apex You can pass the list as you are passing it from the javascript controller but instead of using List<Visit_Owner_Institution__c> newOwnerList in your apex code you can use Object[] newOwnerList and then typecast that list into the sObject type Visit_Owner_Institution__c in apex.

More here