on the good side of
on the good side of (someone)
In the position of being pleasing to someone; in someone's good favor or graces. I know it can be hard to stay on the good side of the boss because of how fickle he is. I suggest you get on the good side of the board if you want your proposal to have any chance of passing.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
*on the good side of someoneand *on someone's good side
Fig. in someone's favor. (*Typically: be ~; get ~.) I tried to get on the good side of the teacher, but that teacher has no good side. First of all, don't try to get on the boss's good side.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.