public with sharing class LightningComponentController {

    @AuraEnabled
    public static List<Object__c> getObjects() {

        // Check to make sure all fields are accessible to this user
        String[] fieldsToCheck = new String[] {
            'Id', 'Name', 'Custom_Field1__c', 'Custom_Field2__c', 'Custom_Field3__c'
        };

        Map<String,Schema.SObjectField> fieldDescribeTokens =
            Schema.SObjectType.Object__c.fields.getMap();

        for(String field : fieldsToCheck) {

            if(!fieldDescribeTokens.get(field).getDescribe().isAccessible()) {

                throw new System.NoAccessException();
                return null;
            }
        }

        return [SELECT Id, Name, Custom_Field1__c, Custom_Field2__c, Custom_Field3__c
                FROM Object__c];
    }

    @AuraEnabled
    public static Object__c saveObject(Object__c object) {

        // Check to make sure the object is updatable
        if(!Schema.getGlobalDescribe().get('Object__c').getDescribe().isUpdateable()) {

            throw new System.NoAccessException();
            return null;
        }

        upsert object;
        return object;
    }
}