Exclude the "." from a file extension in Rails

Question

How do I the dot when getting the file extension name in rails?

Right now I'm using File.extname but it's keeping the "." before giving me the name

Answer 1

Would this work for you?

File.extname('something.jpg').delete('.') #=> 'jpg'

You could even wrap it up in a helper:

def file_extension(filename)
  File.extname(filename).delete('.')
end

file_extension('something.jpg') #=> 'jpg'