[CORE][Entity] Fix implementation of createOrUpdate so it doesn't throw NotFoundException if trying to create an object

This was previously done because we wanted to notify the callee that
and entity existed but not with the provided contents. With the change
of return value, with a bool $is_update, this is no longer a problem.

src/Core/Entity.php

@@ -63,7 +63,7 @@ abstract class Entity
 
         foreach ($args as $prop => $val) {
             if (property_exists($class, $prop)) {
-                $set = 'set' . Formatting::snakeCaseToCamelCase($prop);
+                $set = 'set' . ucfirst(Formatting::snakeCaseToCamelCase($prop));
                 $obj->{$set}($val);
             } else {
                 Log::error($m = "Property {$class}::{$prop} doesn't exist");
@@ -75,12 +75,22 @@ abstract class Entity
 
     /**
      * Create a new instance, but check for duplicates
+     *
+     * @return [$obj, $is_update]
      */
     public static function createOrUpdate(array $args, array $find_by_keys = [])
     {
         $table   = DB::getTableForClass(get_called_class());
         $find_by = $find_by_keys == [] ? $args : array_intersect_key($args, array_flip($find_by_keys));
-        return self::create($args, DB::findOneBy($table, $find_by));
+        try {
+            $obj = DB::findOneBy($table, $find_by);
+        } catch (NotFoundException) {
+            $obj = null;
+        } catch (\Exception $e) {
+            Log::unexpected_exception($e);
+        }
+        $is_update = $obj !== null;
+        return [self::create($args, $obj), $is_update];
     }
 
     /**