Limit graphic stats to 6 months by default, some performance query improvements

app/Traits/UseMongo.php

@@ -6,6 +6,7 @@
 namespace App\Traits;
 
 use Illuminate\Database\Eloquent\Collection;
+use Illuminate\Support\Arr;
 
 trait UseMongo
 {
@@ -56,11 +57,21 @@ trait UseMongo
 				if (! is_array($values))
 					throw new \Exception('Where values must be an array.');
 
-				$where_condition[$key] = ['$in' => $values];
+				switch ($x=Arr::get($values,0)) {
+					case '$gt':
+					case '$gte':
+						$where_condition[$key] = [ $x => Arr::get($values,1)];
+						break;
+
+					case '$in':
+					default:
+						$where_condition[$key] = ['$in' => $values];
+				}
+
 			}
 
 			$query->push([
-				'$match' => $where_condition
+				'$match' => [ '$and'=> [$where_condition]]
 			]);
 		}