Is there a way to step through a Rails app in a debugger?

Question

Is there a way to step through a Rails app in a debugger as it handles a request?

Answer 1

Yes, use pry and pry-debugger. Visit http://pryrepl.org/ for more info.

Answer 2

Yes.

Assuming you've started rails with:

rails s --debugger

and got a line in your code:

debugger

then, when you hit that breakpoint, just press:

Enter 

to step through code line-by-line. You will also see Ruby code being executed en route as your app is being parsed. Not sure how you switch that off.