Visual Console Refactor: add a new util function

Former-commit-id: 8b6266651ac81fcdd18a12b71f3f316eb246277a

pandora_console/include/rest-api/models/Model.php

@@ -182,6 +182,21 @@ abstract class Model
     }
 
 
+    /**
+     * Return a valid float or a default value from a unknown value.
+     *
+     * @param mixed $val Input value.
+     * @param mixed $def Default value.
+     *
+     * @return mixed A valid float extracted from the input or the
+     * default value.
+     */
+    protected static function parseFloatOr($val, $def)
+    {
+        return (is_numeric($val) === true) ? (float) $val : $def;
+    }
+
+
     /**
      * Get a value from a dictionary from a possible pool of keys.
      *