Can Rails console reload modules under lib?

Question

I have a module in my Rails project under lib. I run 'rails c' and do some experimenting in the console. I make a change to the module under lib, type 'reload!' from the console and it doesn't reload the file. I have to quit the console and restart, which is real pain.

Is there a better way to reload that file?

This [question](http://stackoverflow.com/questions/2129458/automatically-reload-rails-module/2138935#2138935) seems to have a solution for your problem — Adrien Coquio, Jun 15 '11 at 17:37

score 172 · Accepted Answer · answered Jun 15 '11 at 17:06

172

Try this:

load "#{Rails.root}/lib/yourfile.rb"

answered Jun 15 '11 at 17:06

NullRef

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Boom-shocka-locka! Just what I needed. Thanks, NullRef! – Chip Castle Jun 15 '11 at 19:48
No problem! I had the same frustration. Thanks for accepting! Bumped me to 200. I was also going to come back and point you to `Guard` [https://github.com/guard/guard](https://github.com/guard/guard) which can do some awesome stuff when files are changed. – NullRef Jun 15 '11 at 19:53
I have heard of Guard and it is very cool. I need to use that in the future for reloading javascript files, so thanks for the reminder! – Chip Castle Jun 16 '11 at 16:13
4

Is there an easy way to reload everything if quite a few files have changed? – lulalala Oct 26 '11 at 05:14
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To reload all rb files in lib: `Dir["#{Rails.root}/lib/**.rb"].map{|f| load f}` You should beware that modules added to ActiveRecord::Base, for instance, in an initializer will not be reattached. – Garrett Lancaster Jan 14 '12 at 02:08
Where do I put load "#{Rails.root}/lib/yourfile.rb"? – Jonathan Leung Jun 08 '12 at 22:38
Also, how do you reload ALL the files in the lib directory? – Jonathan Leung Jun 08 '12 at 22:48
to reload everything: Dir['lib/**/*.rb'].map { |f| load(f) } – patrick Nov 16 '17 at 00:22

Abdo · Answer 2 · 2016-07-13T09:22:32.470

3

Add the following to config/initializers/reload.rb

class Object
  def reload_lib!
    Dir["#{Rails.root}/lib/**/*.rb"].map { |f| [f, load(f) ] } #.all? { |a| a[1] } 
    # uncomment above if you don't want to see all the reloaded files
  end
end

You can now reload all the files in lib by typing reload_lib! in the console

edited Jul 13 '16 at 09:22

answered Oct 30 '14 at 10:06

Abdo

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score 2 · Answer 3 · answered Jan 10 '13 at 10:32

2

In case anyone interested, here's my findings on how to auto-reload require files in Rails without restarting server.

The solution is now available as a Ruby gem require_reloader.

answered Jan 10 '13 at 10:32

Huiming Teo

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Wouter Vegter · Answer 4 · 2014-04-27T14:37:33.987

this is the monkeypatch that could help you, paste this in rails console (or you could put this code in a monkeypatch file - although I don't recommend monkeypatching Object with an utility method):

class Object
  def self.reload_myself!
    method = (self.instance_methods(false) + self.methods(false)).select{|method| method.to_s[0] =~ /[A-Za-z]/}.last
    if method
      if self.instance_methods(false).index method
        method = self.instance_method(method)
      elsif
        method =  self.method(method)
      end

      if (method.source_location)
        source_location = method.source_location[0]
        puts "reloading: #{source_location}"
        load "#{source_location}"
      else
        puts "could not reload #{self.name}"
      end
    end
  end
end

and you can call

reload_myself!

on any object to reload its source code.

Can Rails console reload modules under lib?

4 Answers4

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