yiisoft/yii2 — pull request #5673 by SDKiller (2014-10-21 04:52:21+00:00)
Title: Add methods to set single request parameters

Sometimes you need to add single parameter to already existing (set somewhere before in the code) or replace its value.

As `setBodyParams()`, `setQueryParams()` replace array of params completely - they are not best suited for such needs, extremely when setting of request parametes is made in different places throughout the code.