Filter refactoring

app/Model/Base.php

@@ -31,28 +31,4 @@ abstract class Base extends \Kanboard\Core\Base
             return (int) $db->getLastId();
         });
     }
-
-    /**
-     * Build SQL condition for a given time range
-     *
-     * @access protected
-     * @param  string   $start_time     Start timestamp
-     * @param  string   $end_time       End timestamp
-     * @param  string   $start_column   Start column name
-     * @param  string   $end_column     End column name
-     * @return string
-     */
-    protected function getCalendarCondition($start_time, $end_time, $start_column, $end_column)
-    {
-        $start_column = $this->db->escapeIdentifier($start_column);
-        $end_column = $this->db->escapeIdentifier($end_column);
-
-        $conditions = array(
-            "($start_column >= '$start_time' AND $start_column <= '$end_time')",
-            "($start_column <= '$start_time' AND $end_column >= '$start_time')",
-            "($start_column <= '$start_time' AND ($end_column = '0' OR $end_column IS NULL))",
-        );
-
-        return $start_column.' IS NOT NULL AND '.$start_column.' > 0 AND ('.implode(' OR ', $conditions).')';
-    }
 }