edit

src/Dever/Store/Mongo.php

@@ -255,6 +255,7 @@ class Mongo extends Base
     }
     public function delete($table, $param, $field)
     {
+        $param = $this->param($param);
         $bulk = new BulkWrite;
         $bulk->delete($param);
         $result = $this->update->executeBulkWrite($this->db . '.' . $table, $bulk);
@@ -289,7 +290,11 @@ class Mongo extends Base
                         }
                         $result['$' . $k][] = $where;
                     } else {
-                        $result[$k] = $this->where($k, $v);
+                        if (isset($result[$k])) {
+                            $result[$k] = array_merge($result[$k], $this->where($k, $v));
+                        } else {
+                            $result[$k] = $this->where($k, $v);
+                        }
                     }
                 }
             } elseif ($param) {