rake asset：precompile Rails_ENV = productionが必要に応じて機能しない
コマンドrake assets:precompile Rails_ENV=productionを使用してアセットをプリコンパイルしようとしていますが、常に以下のエラーが表示されます。
** Invoke assets:precompile (first_time)
** Execute assets:precompile
/usr/bin/Ruby /usr/bin/rake assets:precompile:all Rails_ENV=production Rails_GROUPS=assets --trace
** Invoke assets:precompile:all (first_time)
** Execute assets:precompile:all
** Invoke assets:precompile:primary (first_time)
** Invoke assets:environment (first_time)
** Execute assets:environment
** Invoke environment (first_time)
** Execute environment
** Invoke tmp:cache:clear (first_time)
** Execute tmp:cache:clear
** Execute assets:precompile:primary
rake aborted!
LoadError: cannot load such file -- uglifier
(in /home/cool_tech/cool_tech/app/assets/javascripts/application.js)
/usr/lib/Ruby/gems/2.0.0/gems/activesupport-3.2.14/lib/active_support/dependencies.rb:251:in `require'
/usr/lib/Ruby/gems/2.0.0/gems/activesupport-3.2.14/lib/active_support/dependencies.rb:251:in `block in require'
/usr/lib/Ruby/gems/2.0.0/gems/activesupport-3.2.14/lib/active_support/dependencies.rb:236:in `load_dependency'
/usr/lib/Ruby/gems/2.0.0/gems/activesupport-3.2.14/lib/active_support/dependencies.rb:251:in `require'
/usr/lib/Ruby/gems/2.0.0/gems/actionpack-3.2.14/lib/sprockets/compressors.rb:31:in `registered_js_compressor'
/usr/lib/Ruby/gems/2.0.0/gems/actionpack-3.2.14/lib/sprockets/bootstrap.rb:18:in `block in run'
/usr/lib/Ruby/gems/2.0.0/gems/actionpack-3.2.14/lib/sprockets/compressors.rb:80:in `call'
/usr/lib/Ruby/gems/2.0.0/gems/actionpack-3.2.14/lib/sprockets/compressors.rb:80:in `compressor'
/usr/lib/Ruby/gems/2.0.0/gems/actionpack-3.2.14/lib/sprockets/compressors.rb:74:in `compress'
/usr/lib/Ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/processing.rb:265:in `block in js_compressor='
/usr/lib/Ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/processor.rb:29:in `call'
/usr/lib/Ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/processor.rb:29:in `evaluate'
/usr/lib/Ruby/gems/2.0.0/gems/tilt-1.4.1/lib/tilt/template.rb:103:in `render'
/usr/lib/Ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/context.rb:193:in `block in evaluate'
/usr/lib/Ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/context.rb:190:in `each'
/usr/lib/Ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/context.rb:190:in `evaluate'
/usr/lib/Ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/bundled_asset.rb:26:in `initialize'
/usr/lib/Ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/base.rb:252:in `new'
/usr/lib/Ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/base.rb:252:in `build_asset'
/usr/lib/Ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/index.rb:93:in `block in build_asset'
/usr/lib/Ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/caching.rb:19:in `cache_asset'
/usr/lib/Ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/index.rb:92:in `build_asset'
/usr/lib/Ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/base.rb:169:in `find_asset'
/usr/lib/Ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/index.rb:60:in `find_asset'
/usr/lib/Ruby/gems/2.0.0/gems/actionpack-3.2.14/lib/sprockets/static_compiler.rb:19:in `block in compile'
/usr/lib/Ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/base.rb:219:in `block in each_logical_path'
/usr/lib/Ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/base.rb:206:in `block (2 levels) in each_file'
/usr/lib/Ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/base.rb:196:in `each'
/usr/lib/Ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/base.rb:196:in `each_entry'
/usr/lib/Ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/base.rb:204:in `block in each_file'
/usr/lib/Ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/base.rb:203:in `each'
/usr/lib/Ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/base.rb:203:in `each_file'
/usr/lib/Ruby/gems/2.0.0/gems/sprockets-2.2.2/lib/sprockets/base.rb:217:in `each_logical_path'
/usr/lib/Ruby/gems/2.0.0/gems/actionpack-3.2.14/lib/sprockets/static_compiler.rb:18:in `compile'
/usr/lib/Ruby/gems/2.0.0/gems/actionpack-3.2.14/lib/sprockets/assets.rake:56:in `internal_precompile'
/usr/lib/Ruby/gems/2.0.0/gems/actionpack-3.2.14/lib/sprockets/assets.rake:70:in `block (3 levels) in <top (required)>'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:240:in `call'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:240:in `block in execute'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:235:in `each'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:235:in `execute'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:179:in `block in invoke_with_call_chain'
/usr/lib/Ruby/2.0.0/monitor.rb:211:in `mon_synchronize'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:172:in `invoke_with_call_chain'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:165:in `invoke'
/usr/lib/Ruby/gems/2.0.0/gems/actionpack-3.2.14/lib/sprockets/assets.rake:60:in `block (3 levels) in <top (required)>'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:240:in `call'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:240:in `block in execute'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:235:in `each'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:235:in `execute'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:179:in `block in invoke_with_call_chain'
/usr/lib/Ruby/2.0.0/monitor.rb:211:in `mon_synchronize'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:172:in `invoke_with_call_chain'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:165:in `invoke'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:150:in `invoke_task'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:106:in `block (2 levels) in top_level'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:106:in `each'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:106:in `block in top_level'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:115:in `run_with_threads'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:100:in `top_level'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:78:in `block in run'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:176:in `standard_exception_handling'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:75:in `run'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/bin/rake:33:in `<top (required)>'
/usr/bin/rake:23:in `load'
/usr/bin/rake:23:in `<main>'
Tasks: TOP => assets:precompile:primary
rake aborted!
Command failed with status (1): [/usr/bin/Ruby /usr/bin/rake assets:precomp...]
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/file_utils.rb:54:in `block in create_Shell_runner'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/file_utils.rb:45:in `call'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/file_utils.rb:45:in `sh'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/file_utils_ext.rb:37:in `sh'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/file_utils.rb:82:in `Ruby'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/file_utils_ext.rb:37:in `Ruby'
/usr/lib/Ruby/gems/2.0.0/gems/actionpack-3.2.14/lib/sprockets/assets.rake:12:in `Ruby_rake_task'
/usr/lib/Ruby/gems/2.0.0/gems/actionpack-3.2.14/lib/sprockets/assets.rake:21:in `invoke_or_reboot_rake_task'
/usr/lib/Ruby/gems/2.0.0/gems/actionpack-3.2.14/lib/sprockets/assets.rake:29:in `block (2 levels) in <top (required)>'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:240:in `call'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:240:in `block in execute'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:235:in `each'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:235:in `execute'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:179:in `block in invoke_with_call_chain'
/usr/lib/Ruby/2.0.0/monitor.rb:211:in `mon_synchronize'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:172:in `invoke_with_call_chain'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/task.rb:165:in `invoke'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:150:in `invoke_task'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:106:in `block (2 levels) in top_level'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:106:in `each'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:106:in `block in top_level'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:115:in `run_with_threads'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:100:in `top_level'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:78:in `block in run'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:176:in `standard_exception_handling'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/lib/rake/application.rb:75:in `run'
/usr/lib/Ruby/gems/2.0.0/gems/rake-10.2.2/bin/rake:33:in `<top (required)>'
/usr/bin/rake:23:in `load'
/usr/bin/rake:23:in `<main>'
Tasks: TOP => assets:precompile
誰が何が間違っているのか考えていますか？ありがとう。
交換
rake assets:precompile Rails_ENV=production
と
rake assets:precompile（Rails_ENV=production bundle exec rake assets:precompileは正確なrakeタスクです）
プリコンパイルはプロダクションモードでのみ行われるため、環境を明示的に指定する必要はありません。
更新：
Gemfileに次の行を追加してみてください。
group :assets do
gem 'therubyracer'
gem 'sass-Rails', " ~> 3.1.0"
gem 'coffee-Rails', "~> 3.1.0"
gem 'uglifier'
end
次にbundle installを実行します。
それがうまくいくことを願っています:)
このgemをgemfileに追加しましたか？
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
そのgemをアセットグループから移動してからもう一度bundleコマンドを実行してください。
問題を説明するためのエラーは次のとおりです。
LoadError: cannot load such file -- uglifier
(in /home/cool_tech/cool_tech/app/assets/javascripts/application.js)
これは、application.jsのどこかで、アプリがuglifier（おそらくファイルの上部のmanifest領域）を参照していることを意味します。問題を修正するには、uglifierへの参照を削除するか、uglifierファイルがアプリに存在することを確認する必要があります。
修正
GemFileにgemを追加できなかった場合は、application.jsマニフェスト内のuglifierへの参照を削除することで簡単に修正できます。これはもちろん一時的なものですが、少なくともアセットをプリコンパイルすることはできます
今日この問題がありました。私はそれが私の要求について明示的であることを修正しました
gem 'uglifier', '>= 1.0.3', require: 'uglifier'
私はまだ資産グループにいました。
bundle updateなしでプリコンパイルすると、バックアッププロジェクトがうまく機能することがわかりました。更新されたgemで何かがおかしいかもしれませんが、どのgemにエラーがあるのかわかりません。