Rails 4 asset pipeline generates different digest in different environments

Hello,

I am facing this weird issue. I believe the asset digests are generated
based on the content of the file. However, when I deploy my application
using Capistrano to staging environments and multiple boxes in
production
environment, I see different digests everywhere.

E.g.

In staging

walk-7c37170aabab6fdd99a9d17a303abfaf.jpg

Production

walk-0456e469fd62f3542f72164914da851f.jpg
walk-14c6d0204ad05c65f224f93e3d60deb8.jpg(older)
walk-73cce916ff11427c80512c1e69be4d4d.jpg(older)

I am not using any custom Capistrano tasks. Here is my deploy.rb for
reference.

set :application, ‘’
set :deploy_user, ‘ubuntu’

set :deploy_to,
“/home/#{fetch(:deploy_user)}/apps/#{fetch(:application)}”
set :migrate_target, :current
set :rails_env, “production”
set :rvm1_ruby_version, “2.1.1”
set :rvm_type, :system
set :default_shell, ‘/bin/bash -l’
set :pty, true
set :ssh_options, {
forward_agent: true}
#RVM setup

set :scm, :git
set :repo_url, ‘’
set :branch, “master”
set :log_level, :debug

set :linked_files, fetch(:linked_files,
[]).push(‘config/database.yml’,‘config/application.yml’,‘config/secrets.yml’)

set :linked_dirs,
fetch(:linked_dirs,[]).push(‘log’,‘tmp/pids’,‘tmp/cache’, ‘tmp/sockets’,
‘vendor/bundle’,‘public/system’,‘public/images’,‘public/assets’)

set :bundle_binstubs, nil

after ‘deploy:publishing’, ‘deploy:restart’
namespace :deploy do
task :restart do
invoke 'unicorn:restart’end

end

What could explain this difference? Am I doing something wrong? Can I
force
asset digests to be created consistently?

Also posted on stackoverflow.

http://stackoverflow.com/questions/32336707/rails-4-asset-pipeline-generates-different-digest-in-different-environments

Why is this an issue? Typically speaking this should be transparent at
the
application layer all the time. If you need another app or service to be
able to access images on your app you should expose that through an API.

Ahhhhhhhhhh.

Are you using S3 for image hosting and see broken links on dev because
it
uses a copy ( shallow or otherwise ) of another environments data?

On Wed, Sep 2, 2015 at 10:06 AM, Stewart M. [email protected]

On Wednesday, September 2, 2015 at 6:31:13 AM UTC+1, Sri wrote:

What could explain this difference? Am I doing something wrong? Can I
force asset digests to be created consistently?

Are the files definitely identical?

Fred

On Sep 2, 2015, at 11:19 AM, Frederick C. [email protected]
wrote:

On Wednesday, September 2, 2015 at 6:31:13 AM UTC+1, Sri wrote:

What could explain this difference? Am I doing something wrong? Can I force
asset digests to be created consistently?

Are the files definitely identical?

Does the asset pipeline compilation use the rake secret, by any chance?

Walter

I would imagine that it is because the secret key is different in each
environment.

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