Hope its not a too stupid question,but i have a problem.

I just created a simple procedural wood texture,and wanted to apply it to a Material i just made.
I really dont know how (i use to apply image texture in node editor,but with procedural is my first time trying)

I saw a tutorial made on 2.7 i guess,and the moment the guy create a material,then creates the procedural texture,the procedural is showed on the material and on the render right away.On my 2.8,this doesnt happen..Is there a way to do that ?