Best way to require all files from a directory in ruby

Question

What s the best way to require all files from a directory in ruby

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In Rails  you can do   Dir Rails root join  lib    ext      rb    each    file  require file     Update  Corrected with suggestion of  Jiggneshh Gohel to remove slashes

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Instead of concatenating paths like in some answers  I use File expand path   Dir File expand path  importers   rb   File dirname   FILE      each do  file    require file end   Update   Instead of using File dirname you could do the following   Dir File expand path     importers   rb     FILE     each do  file    require file end   Where    strips the filename of   FILE

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How about   Dir   path to directory   rb   each   file  require file

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Dir File join   dir      app      rb    each do  file    require file end   This will work recursively on your local machine and a remote  Like Heroku  which does not use relative paths

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Try the require all gem    http   github com jarmo require all https   rubygems org gems require all   It lets you simply   require all  path to directory

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If it s a directory relative to the file that does the requiring  e g  you want to load all files in the lib directory    Dir File dirname   FILE        lib   rb   each   file  require file     Edit  Based on comments below  an updated version   Dir File join   dir     lib      rb    each    file  require file

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I m a few years late to the party  but I kind of like this one-line solution I used to get rails to include everything in app workers concerns   Dir  Rails root join   w app workers concerns      each   f  require f

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Dir File dirname   FILE           lib   rb   each do  file     require File basename file  File extname file   end   If you don t strip the extension then you may end up requiring the same file twice  ruby won t realize that  foo  and  foo rb  are the same file   Requiring the same file twice can lead to spurious warnings  e g   warning  already initialized constant

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The best way is to add the directory to the load path and then require the basename of each file   This is because you want to avoid accidentally requiring the same file twice -- often  not the intended behavior   Whether a file will be loaded or not is dependent on whether require has seen the path passed to it before   For example  this simple irb session shows that you can mistakenly require and load the same file twice     irb irb main  001 0 gt  require  test    gt  true irb main  002 0 gt  require    test    gt  true irb main  003 0 gt  require    test rb    gt  false irb main  004 0 gt  require  test    gt  false   Note that the first two lines return true meaning the same file was loaded both times   When paths are used  even if the paths point to the same location  require doesn t know that the file was already required   Here instead  we add a directory to the load path and then require the basename of each   rb file within   dir     path to directory   LOAD PATH unshift dir  Dir File join dir     rb    each   file  require File basename file      If you don t care about the file being required more than once  or your intention is just to load the contents of the file  perhaps load should be used instead of require   Use load in this case  because it better expresses what you re trying to accomplish   For example   Dir   path to directory   rb   each   file  load file

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Dir glob File join  path            rb     amp method  require     or alternatively  if you want to scope the files to load to specific folders   Dir glob File join  path     folder1 folder2             rb     amp method  require     explanation    Dir glob takes a block as argument   method  require  will return the require method    amp method  require  will convert the method to a bloc

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And what about  require relative  Dir  relative path

[ruby] Best way to require all files from a directory in ruby?

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