Definately worth venturing a bit further out than temple bar and checking out Smithfield on the northside or Camden street on the southside for where Dublin locals would go to avoid the overpriced Temple bar scene.
Camden
https://www.jar.ie/article/19-pubs-bars-drink-around-camden-street-georges-street-dublin-city-centre
Smithfield
http://publin.ie/category/stoneysmithpark/
RE: Dublin is a Night Time Town, and it's Awesome!