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Viewing the parent file path (See related posts)

The following snippet demonstrates how to retrieve just a parent file path (which may be a blank string). 

f = "fun"           # 1)
f = "fun/123"       # 2)
f = "great/fun/123" # 3)

parent_path = f.sub(/\/?[^\/]+$/,'')

# or

parent_path = f.split('/')[0..-2].join('/')


output:

# 1) => ""
# 2) => "fun"
# 3) => "great/fun"


*update: 11-Nov-09 @ 7:30pm*

Here's another regex alternative:
parent_path = f[/.+(?=\/)/].to_s
to ruby regex string path regexp file parent sub by jrobertson on Tue Nov 10 15:53:48 -0500 2009

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