Understanding rails path

Ruby on Rails
1 
 APP_PATH = File.expand_path('../../config/application',  __FILE__)

this line of code is in /myhomefolder/myrailsapp/bin/rails file.

is it not trying to include a file from /myhomefolder/config/application? since the first ‘…’ should take to ‘myrailsapp’ as the present script folder is bin which is just one folder down the tree.

However, I tried to print APP_PATH and it prints the correct path inside myrailsapp? how is it working?

2

The following answer on SO might be helpful:

3

thanks very helpful.