Heroku i poręcze: Gem Błąd ładowania z PostgreSQL, jednak jest określony w GEMFILE

Question

Więc próbuję wdrożyć niewielki projekt do Heroku, jednak kiedy wdrożone go i próbował uruchomić heroku run rake db:migrate powrócił mi następujący błąd:

rake aborted! 
Gem::LoadError: Specified 'postgresql' for database adapter, but the gem is not loaded. Add `gem 'pg'` to your Gemfile (and ensure its version is at the minimum required by ActiveRecord). 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.6/lib/active_record/connection_adapters/connection_specification.rb:177:in `rescue in spec' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.6/lib/active_record/connection_adapters/connection_specification.rb:174:in `spec' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.6/lib/active_record/connection_handling.rb:50:in `establish_connection' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.6/lib/active_record/railtie.rb:120:in `block (2 levels) in <class:Railtie>' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.6/lib/active_support/lazy_load_hooks.rb:38:in `instance_eval' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.6/lib/active_support/lazy_load_hooks.rb:38:in `execute_hook' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.6/lib/active_support/lazy_load_hooks.rb:28:in `block in on_load' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.6/lib/active_support/lazy_load_hooks.rb:27:in `each' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.6/lib/active_support/lazy_load_hooks.rb:27:in `on_load' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.6/lib/active_record/railtie.rb:116:in `block in <class:Railtie>' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.2.6/lib/rails/initializable.rb:30:in `instance_exec' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.2.6/lib/rails/initializable.rb:30:in `run' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.2.6/lib/rails/initializable.rb:55:in `block in run_initializers' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.2.6/lib/rails/initializable.rb:54:in `run_initializers' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.2.6/lib/rails/application.rb:352:in `initialize!' 
/app/config/environment.rb:5:in `<top (required)>' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in `require' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in `block in require' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:240:in `load_dependency' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in `require' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.2.6/lib/rails/application.rb:328:in `require_environment!' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.2.6/lib/rails/application.rb:457:in `block in run_tasks_blocks' 
Gem::LoadError: pg is not part of the bundle. Add it to Gemfile. 
/app/vendor/bundle/ruby/2.2.0/gems/bundler-1.11.2/lib/bundler/rubygems_integration.rb:304:in `block in replace_gem' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.6/lib/active_record/connection_adapters/postgresql_adapter.rb:16:in `<top (required)>' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in `require' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in `block in require' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:240:in `load_dependency' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in `require' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.6/lib/active_record/connection_adapters/connection_specification.rb:175:in `spec' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.6/lib/active_record/connection_handling.rb:50:in `establish_connection' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.6/lib/active_record/railtie.rb:120:in `block (2 levels) in <class:Railtie>' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.6/lib/active_support/lazy_load_hooks.rb:38:in `instance_eval' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.6/lib/active_support/lazy_load_hooks.rb:38:in `execute_hook' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.6/lib/active_support/lazy_load_hooks.rb:28:in `block in on_load' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.6/lib/active_support/lazy_load_hooks.rb:27:in `each' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.6/lib/active_support/lazy_load_hooks.rb:27:in `on_load' 
/app/vendor/bundle/ruby/2.2.0/gems/activerecord-4.2.6/lib/active_record/railtie.rb:116:in `block in <class:Railtie>' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.2.6/lib/rails/initializable.rb:30:in `instance_exec' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.2.6/lib/rails/initializable.rb:30:in `run' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.2.6/lib/rails/initializable.rb:55:in `block in run_initializers' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.2.6/lib/rails/initializable.rb:54:in `run_initializers' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.2.6/lib/rails/application.rb:352:in `initialize!' 
/app/config/environment.rb:5:in `<top (required)>' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in `require' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in `block in require' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:240:in `load_dependency' 
/app/vendor/bundle/ruby/2.2.0/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in `require' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.2.6/lib/rails/application.rb:328:in `require_environment!' 
/app/vendor/bundle/ruby/2.2.0/gems/railties-4.2.6/lib/rails/application.rb:457:in `block in run_tasks_blocks' 
Tasks: TOP => db:migrate => environment 
(See full trace by running task with --trace) 

Widzę od pierwszej linii, że muszę załadować klejnot pg w moim pliku gem, jednak już go załadowałem do grupy produkcyjnej i zainstalowałem przez bundle. Oto moja GEMFILE:

source 'https://rubygems.org' 
# Bundle edge Rails instead: gem 'rails', github: 'rails/rails' 
gem 'rails', '4.2.6' 
gem 'sass-rails', '~> 5.0' 
gem 'uglifier', '>= 1.3.0' 
gem 'coffee-rails', '~> 4.1.0' 
gem 'jquery-rails' 
gem 'turbolinks' 
gem 'jbuilder', '~> 2.0' 
gem 'sdoc', '~> 0.4.0', group: :doc 
gem 'devise', '~> 3.5', '>= 3.5.6' 
gem 'paperclip', '~> 4.3', '>= 4.3.6' 
gem 'materialize-sass' 
gem "font-awesome-rails" 
gem 'bootstrap-sass', '~> 3.2.0' 
gem 'autoprefixer-rails' 
gem 'ratyrate' 

group :development, :test do 
    gem 'byebug' 
end 

group :development do 
    gem 'web-console', '~> 2.0' 
    gem 'spring' 
end 

group :development do 
    gem 'sqlite3' 
end 

group :production do 
    gem 'pg' 
    gem 'rails_12factor' 
end 

Przed wysłaniem to pytanie Znam odpowiedź na to samo pytanie (rake about database adapter inconsistent with database.yml, rake aborted! Gem::LoadError: Specified 'postgresql' for database adapter, Gem::LoadError: Specified 'postgresql' for database adapter, but the gem is not loaded) stosując tam odpowiedź, błąd nadal występowały.

Dzięki za pomoc :)

Answer 1

spróbować napisać pg poza produkcją, wiązka, popełnić ur kod z gemlock, gemfile i wcisnąć kod do Heroku następnie spróbuj ponownie

Answer 2

miałem dokładnie ten problem i rozwiązać go przez zmieniając się na:

'pg', '~> 0.20'