Râteau d'actifs: précompilé tentant de se connecter à la base de données

Question

J'essaie de déboguer pourquoi mon application tente de me connecter à ma base de données lorsque j'exécute rake assets:precompile --trace.

Il me manque probablement quelque chose dans la trace de pile ... quelqu'un voient la ligne pertinente?

DEPRECATION WARNING: The InstanceMethods module inside ActiveSupport::Concern will be no longer included automatically. Please define instance methods directly in ActionController::Base instead. (called from <top (required)> at /Users/Kyle/Desktop/skateparks-web/config/application.rb:4)
** Invoke assets:precompile (first_time)
** Execute assets:precompile
/Users/Kyle/.rvm/rubies/ruby-1.9.2-p290/bin/ruby /Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/bin/rake assets:precompile:all RAILS_ENV=production RAILS_GROUPS=assets --trace
DEPRECATION WARNING: The InstanceMethods module inside ActiveSupport::Concern will be no longer included automatically. Please define instance methods directly in ActionController::Base instead. (called from <top (required)> at /Users/Kyle/Desktop/skateparks-web/config/application.rb:4)
** 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
rake aborted!
FATAL:  database "skateparks_production" does not exist
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/activerecord-3.2.0/lib/active_record/connection_adapters/postgresql_adapter.rb:1161:in `initialize'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/activerecord-3.2.0/lib/active_record/connection_adapters/postgresql_adapter.rb:1161:in `new'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/activerecord-3.2.0/lib/active_record/connection_adapters/postgresql_adapter.rb:1161:in `connect'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/activerecord-3.2.0/lib/active_record/connection_adapters/postgresql_adapter.rb:316:in `initialize'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/activerecord-3.2.0/lib/active_record/connection_adapters/postgresql_adapter.rb:27:in `new'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/activerecord-3.2.0/lib/active_record/connection_adapters/postgresql_adapter.rb:27:in `postgresql_connection'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/activerecord-3.2.0/lib/active_record/connection_adapters/abstract/connection_pool.rb:277:in `new_connection'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/activerecord-3.2.0/lib/active_record/connection_adapters/abstract/connection_pool.rb:287:in `checkout_new_connection'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/activerecord-3.2.0/lib/active_record/connection_adapters/abstract/connection_pool.rb:235:in `block (2 levels) in checkout'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/activerecord-3.2.0/lib/active_record/connection_adapters/abstract/connection_pool.rb:230:in `loop'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/activerecord-3.2.0/lib/active_record/connection_adapters/abstract/connection_pool.rb:230:in `block in checkout'
/Users/Kyle/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/activerecord-3.2.0/lib/active_record/connection_adapters/abstract/connection_pool.rb:229:in `checkout'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/activerecord-3.2.0/lib/active_record/connection_adapters/abstract/connection_pool.rb:95:in `connection'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/activerecord-3.2.0/lib/active_record/connection_adapters/abstract/connection_pool.rb:374:in `retrieve_connection'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/activerecord-3.2.0/lib/active_record/connection_adapters/abstract/connection_specification.rb:168:in `retrieve_connection'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/activerecord-3.2.0/lib/active_record/connection_adapters/abstract/connection_specification.rb:142:in `connection'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/activerecord-3.2.0/lib/active_record/model_schema.rb:308:in `clear_cache!'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/activerecord-3.2.0/lib/active_record/railtie.rb:91:in `block (2 levels) in <class:Railtie>'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/activesupport-3.2.0/lib/active_support/callbacks.rb:418:in `_run__2041913228368879189__prepare__1991931652306887621__callbacks'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/activesupport-3.2.0/lib/active_support/callbacks.rb:405:in `__run_callback'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/activesupport-3.2.0/lib/active_support/callbacks.rb:385:in `_run_prepare_callbacks'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/activesupport-3.2.0/lib/active_support/callbacks.rb:81:in `run_callbacks'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/actionpack-3.2.0/lib/action_dispatch/middleware/reloader.rb:74:in `prepare!'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/actionpack-3.2.0/lib/action_dispatch/middleware/reloader.rb:48:in `prepare!'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/railties-3.2.0/lib/rails/application/finisher.rb:48:in `block in <module:Finisher>'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/railties-3.2.0/lib/rails/initializable.rb:30:in `instance_exec'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/railties-3.2.0/lib/rails/initializable.rb:30:in `run'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/railties-3.2.0/lib/rails/initializable.rb:55:in `block in run_initializers'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/railties-3.2.0/lib/rails/initializable.rb:54:in `each'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/railties-3.2.0/lib/rails/initializable.rb:54:in `run_initializers'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/railties-3.2.0/lib/rails/application.rb:136:in `initialize!'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/railties-3.2.0/lib/rails/railtie/configurable.rb:30:in `method_missing'
/Users/Kyle/Desktop/skateparks-web/config/environment.rb:5:in `<top (required)>'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:251:in `require'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:251:in `block in require'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:236:in `load_dependency'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/activesupport-3.2.0/lib/active_support/dependencies.rb:251:in `require'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/railties-3.2.0/lib/rails/application.rb:103:in `require_environment!'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/railties-3.2.0/lib/rails/application.rb:292:in `block (2 levels) in initialize_tasks'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/task.rb:205:in `call'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/task.rb:205:in `block in execute'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/task.rb:200:in `each'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/task.rb:200:in `execute'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/task.rb:158:in `block in invoke_with_call_chain'
/Users/Kyle/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/task.rb:151:in `invoke_with_call_chain'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/task.rb:144:in `invoke'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/actionpack-3.2.0/lib/sprockets/assets.rake:89:in `block (2 levels) in <top (required)>'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/task.rb:205:in `call'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/task.rb:205:in `block in execute'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/task.rb:200:in `each'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/task.rb:200:in `execute'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/task.rb:158:in `block in invoke_with_call_chain'
/Users/Kyle/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/task.rb:151:in `invoke_with_call_chain'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/task.rb:176:in `block in invoke_prerequisites'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/task.rb:174:in `each'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/task.rb:174:in `invoke_prerequisites'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/task.rb:157:in `block in invoke_with_call_chain'
/Users/Kyle/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/task.rb:151:in `invoke_with_call_chain'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/task.rb:144:in `invoke'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/actionpack-3.2.0/lib/sprockets/assets.rake:56:in `block (3 levels) in <top (required)>'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/task.rb:205:in `call'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/task.rb:205:in `block in execute'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/task.rb:200:in `each'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/task.rb:200:in `execute'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/task.rb:158:in `block in invoke_with_call_chain'
/Users/Kyle/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/task.rb:151:in `invoke_with_call_chain'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/task.rb:144:in `invoke'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/application.rb:112:in `invoke_task'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/application.rb:90:in `block (2 levels) in top_level'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/application.rb:90:in `each'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/application.rb:90:in `block in top_level'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/application.rb:129:in `standard_exception_handling'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/application.rb:84:in `top_level'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/application.rb:62:in `block in run'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/application.rb:129:in `standard_exception_handling'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/application.rb:59:in `run'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/bin/rake:32:in `<top (required)>'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/bin/rake:19:in `load'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/bin/rake:19:in `<main>'
Tasks: TOP => environment
rake aborted!
Command failed with status (1): [/Users/Kyle/.rvm/rubies/ruby-1.9.2-p290/bi...]
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/file_utils.rb:53:in `block in create_shell_runner'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/file_utils.rb:45:in `call'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/file_utils.rb:45:in `sh'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/file_utils_ext.rb:36:in `sh'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/file_utils.rb:78:in `ruby'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/file_utils_ext.rb:36:in `ruby'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/actionpack-3.2.0/lib/sprockets/assets.rake:9:in `ruby_rake_task'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/actionpack-3.2.0/lib/sprockets/assets.rake:17:in `invoke_or_reboot_rake_task'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/actionpack-3.2.0/lib/sprockets/assets.rake:25:in `block (2 levels) in <top (required)>'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/task.rb:205:in `call'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/task.rb:205:in `block in execute'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/task.rb:200:in `each'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/task.rb:200:in `execute'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/task.rb:158:in `block in invoke_with_call_chain'
/Users/Kyle/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/monitor.rb:201:in `mon_synchronize'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/task.rb:151:in `invoke_with_call_chain'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/task.rb:144:in `invoke'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/application.rb:112:in `invoke_task'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/application.rb:90:in `block (2 levels) in top_level'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/application.rb:90:in `each'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/application.rb:90:in `block in top_level'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/application.rb:129:in `standard_exception_handling'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/application.rb:84:in `top_level'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/application.rb:62:in `block in run'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/application.rb:129:in `standard_exception_handling'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/lib/rake/application.rb:59:in `run'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/gems/rake-0.9.2/bin/rake:32:in `<top (required)>'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/bin/rake:19:in `load'
/Users/Kyle/.rvm/gems/ruby-1.9.2-p290@skateparks/bin/rake:19:in `<main>'
Tasks: TOP => assets:precompile

Answer 1

rake assets:precompile Initialise votre application par défaut, qui inclut la connexion à la base de données.

À l'intérieur config/application.rb Vous pouvez l'ajouter, mais voir le lien ci-dessous pour les avertissements à ce sujet:

config.assets.initialize_on_precompile = false

Guide des rails sur les actifs précompilés

Answer 2

Si cela a du sens dans votre situation, vous pouvez choisir contre quel environnement assets:precompile devrait fonctionner, avec la commande suivante:

rake assets:precompile:all RAILS_ENV=development RAILS_GROUPS=assets

Cela a du sens pour mon déploiement car généralement:

1. Je fais Rake pour générer des actifs sur ma machine de développement (car la mémoire de mes VP est en quelque sorte limitée)
2. Je zippe toute la demande avec les actifs générés en public / actifs
3. Je transfère le zip vers le VPS Ans dézip le package là-bas

J'espère que cela aide.

Answer 3

J'ai eu le même problème. Après avoir mis à jour les pignons vers la version 3, chaque fois que j'ai essayé de précompiler les actifs localement (développement), mais en utilisant les paramètres de l'environnement de production, j'ai eu cette erreur:

Râteau abandonné! GEM :: LoadError: «PostgreSQL» spécifié pour l'adaptateur de base de données, mais le gemme n'est pas chargé. Ajouter gem 'pg' à votre gemfile (et assurez-vous que sa version est au minimum requise par activeRecord).

Parce que dans mon (développement) local, j'utilise MySQL et dans le serveur (production), j'utilise Postgres.

La réponse marquée comme résolue ne fonctionne pas pour moi, car config.assets.initialize_on_precompile n'est pas disponible en Rails 4.2.1.

Pour résoudre, j'ai suivi 3 étapes simples:

1. Dans votre gemfile, ajoutez: gem "activerecord-nulldb-adapter"

2. Dans database.yml, Changez l'adaptateur comme suit:

   production:
     adapter: <%= ENV['DB_ADAPTER'] ||= 'postgresql' %>
   

3. Pour compiler vos actifs de production localement. courir dans votre terminal

   DB_ADAPTER=nulldb RAILS_ENV=production rake assets:precompile
   

Ces solutions m'ont résolu et j'ai vu ici.

Answer 4

Les versions plus récentes des rails ne chargent pas la base de données pendant la précompilation des actifs. Cependant, les initialiseurs le feront souvent se charger. Cela peut être frustrant pour déboguer, car l'erreur omet la trace de pile.

./bin/rails assets:precompile
(in ~/src/nautilus)
rake aborted!
ActiveRecord::NoDatabaseError: FATAL:  database "your_app_development" does not exist
bundler: failed to load command: rake (~/src/your_app/vendor/bundle/ruby/2.6.0/bin/rake)
NoMethodError: undefined method `reject' for nil:NilClass

L'erreur moins qu'utile.

---

Alors, comment pouvons-nous comprendre où se trouve le problème?

Déplacer tout les initialiseurs à partir de config/initializers Puis courez ./bin/rails assets:precompile.

Si cela fonctionne, très bien, vous savez que le problème est dans l'un de ces fichiers.

Reprenez-les un par un jusqu'à ce que vous trouviez le (s) fichier (s) incriminé.

---

Maintenant que le problème a été trouvé, comment pouvons-nous le résoudre?

Ensuite, quand je trouve un initialzer qui a un problème, je l'enroule avec le contrôle suivant:

unless ARGV.include? "assets:precompile"
  # ...
end

Je préfère cela au NulldB car il réduit le nombre de dépendances que je dois maintenir dans l'application.

Answer 5

Vérifiez vos fichiers de configuration (dans tous les environnements). Si par exemple

rake assets:precompile

Fonctionne dans le développement, mais vous rencontrez des problèmes de production

RAILS_ENV=production bundle exec rake assets:precompile

Ensuite, vous avez probablement une référence à un enregistrement actif dans votre /config/environments/production.rb

config.active_record.dump_schema_after_migration = false

Afin d'éviter tout à fait si vous prévoyez de ne pas profiter d'un enregistrement actif ou d'employer un nosql tel que Mongo, vous souhaiterez peut-être initialiser votre nouvelle application comme suit:

rails new myApp --skip-active-record

ce qui équivaut à -o (capital o) en ce qui me concerne.