Консоль Rails не открывается из-за ошибки «Пожалуйста, установите ошибку postgresql», в новом созданном приложении, которое не использует postgres.

Question

Я запускаю Rails 3.2.11, но это похоже на 3.2.10 и 3.2 .9 для меня тоже. По существу, я

rails new sample_app 
rails console 

И это выплевывает:

/Users/carl/.rvm/gems/ruby-1.9.3-p362@global/gems/bundler-1.2.3/lib/bundler/rubygems_integration.rb:147:in `block in replace_gem': Please install the postgresql adapter: `gem install activerecord-postgresql-adapter` (pg is not part of the bundle. Add it to Gemfile.) (LoadError) 
from /Users/carl/.rvm/gems/ruby-1.9.3-p362@rails3tutorial2ndEd/gems/activerecord-3.2.11/lib/active_record/connection_adapters/postgresql_adapter.rb:7:in `<top (required)>' 
from /Users/carl/.rvm/gems/ruby-1.9.3-p362@rails3tutorial2ndEd/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:251:in `require' 
from /Users/carl/.rvm/gems/ruby-1.9.3-p362@rails3tutorial2ndEd/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:251:in `block in require' 
from /Users/carl/.rvm/gems/ruby-1.9.3-p362@rails3tutorial2ndEd/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:236:in `load_dependency' 
from /Users/carl/.rvm/gems/ruby-1.9.3-p362@rails3tutorial2ndEd/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:251:in `require' 
from /Users/carl/.rvm/gems/ruby-1.9.3-p362@rails3tutorial2ndEd/gems/activerecord-3.2.11/lib/active_record/connection_adapters/abstract/connection_specification.rb:50:in `resolve_hash_connection' 
from /Users/carl/.rvm/gems/ruby-1.9.3-p362@rails3tutorial2ndEd/gems/activerecord-3.2.11/lib/active_record/connection_adapters/abstract/connection_specification.rb:41:in `resolve_string_connection' 
from /Users/carl/.rvm/gems/ruby-1.9.3-p362@rails3tutorial2ndEd/gems/activerecord-3.2.11/lib/active_record/connection_adapters/abstract/connection_specification.rb:27:in `spec' 
from /Users/carl/.rvm/gems/ruby-1.9.3-p362@rails3tutorial2ndEd/gems/activerecord-3.2.11/lib/active_record/connection_adapters/abstract/connection_specification.rb:130:in `establish_connection' 
from /Users/carl/.rvm/gems/ruby-1.9.3-p362@rails3tutorial2ndEd/gems/activerecord-3.2.11/lib/active_record/railtie.rb:82:in `block (2 levels) in <class:Railtie>' 
from /Users/carl/.rvm/gems/ruby-1.9.3-p362@rails3tutorial2ndEd/gems/activesupport-3.2.11/lib/active_support/lazy_load_hooks.rb:36:in `instance_eval' 
from /Users/carl/.rvm/gems/ruby-1.9.3-p362@rails3tutorial2ndEd/gems/activesupport-3.2.11/lib/active_support/lazy_load_hooks.rb:36:in `execute_hook' 
from /Users/carl/.rvm/gems/ruby-1.9.3-p362@rails3tutorial2ndEd/gems/activesupport-3.2.11/lib/active_support/lazy_load_hooks.rb:43:in `block in run_load_hooks' 
from /Users/carl/.rvm/gems/ruby-1.9.3-p362@rails3tutorial2ndEd/gems/activesupport-3.2.11/lib/active_support/lazy_load_hooks.rb:42:in `each' 
from /Users/carl/.rvm/gems/ruby-1.9.3-p362@rails3tutorial2ndEd/gems/activesupport-3.2.11/lib/active_support/lazy_load_hooks.rb:42:in `run_load_hooks' 
from /Users/carl/.rvm/gems/ruby-1.9.3-p362@rails3tutorial2ndEd/gems/activerecord-3.2.11/lib/active_record/base.rb:720:in `<top (required)>' 
from /Users/carl/.rvm/gems/ruby-1.9.3-p362@rails3tutorial2ndEd/gems/activerecord-3.2.11/lib/active_record/railtie.rb:41:in `block in <class:Railtie>' 
from /Users/carl/.rvm/gems/ruby-1.9.3-p362@rails3tutorial2ndEd/gems/railties-3.2.11/lib/rails/railtie.rb:179:in `call' 
from /Users/carl/.rvm/gems/ruby-1.9.3-p362@rails3tutorial2ndEd/gems/railties-3.2.11/lib/rails/railtie.rb:179:in `block in load_console' 
from /Users/carl/.rvm/gems/ruby-1.9.3-p362@rails3tutorial2ndEd/gems/railties-3.2.11/lib/rails/railtie.rb:179:in `each' 
from /Users/carl/.rvm/gems/ruby-1.9.3-p362@rails3tutorial2ndEd/gems/railties-3.2.11/lib/rails/railtie.rb:179:in `load_console' 
from /Users/carl/.rvm/gems/ruby-1.9.3-p362@rails3tutorial2ndEd/gems/railties-3.2.11/lib/rails/engine.rb:429:in `block in load_console' 
from /Users/carl/.rvm/gems/ruby-1.9.3-p362@rails3tutorial2ndEd/gems/railties-3.2.11/lib/rails/application/railties.rb:8:in `each' 
from /Users/carl/.rvm/gems/ruby-1.9.3-p362@rails3tutorial2ndEd/gems/railties-3.2.11/lib/rails/application/railties.rb:8:in `all' 
from /Users/carl/.rvm/gems/ruby-1.9.3-p362@rails3tutorial2ndEd/gems/railties-3.2.11/lib/rails/engine.rb:429:in `load_console' 
from /Users/carl/.rvm/gems/ruby-1.9.3-p362@rails3tutorial2ndEd/gems/railties-3.2.11/lib/rails/application.rb:153:in `load_console' 
from /Users/carl/.rvm/gems/ruby-1.9.3-p362@rails3tutorial2ndEd/gems/railties-3.2.11/lib/rails/commands/console.rb:27:in `start' 
from /Users/carl/.rvm/gems/ruby-1.9.3-p362@rails3tutorial2ndEd/gems/railties-3.2.11/lib/rails/commands/console.rb:8:in `start' 
from /Users/carl/.rvm/gems/ruby-1.9.3-p362@rails3tutorial2ndEd/gems/railties-3.2.11/lib/rails/commands.rb:41:in `<top (required)>' 
from script/rails:6:in `require' 
from script/rails:6:in `<main>' 

Мой вопрос: Я использую по умолчанию генерируется Gemfile и даже не используя Postgres. Почему Rails жалуется на меня и как я могу это исправить? Может ли это быть чем-то связанным с моим gemset или RubyGems? Вот Gemfile для справки:

source 'https://rubygems.org' 
gem 'rails', '3.2.11' 
# Bundle edge Rails instead: 
# gem 'rails', :git => 'git://github.com/rails/rails.git' 
gem 'sqlite3' 
# Gems used only for assets and not required 
# in production environments by default. 
group :assets do 
    gem 'sass-rails', '~> 3.2.3' 
    gem 'coffee-rails', '~> 3.2.1' 
    # See https://github.com/sstephenson/execjs#readme for more supported runtimes 
    # gem 'therubyracer', :platforms => :ruby 
    gem 'uglifier', '>= 1.0.3' 
end 
gem 'jquery-rails' 
# To use ActiveModel has_secure_password 
# gem 'bcrypt-ruby', '~> 3.0.0' 
# To use Jbuilder templates for JSON 
# gem 'jbuilder' 
# Use unicorn as the app server 
# gem 'unicorn' 
# Deploy with Capistrano 
# gem 'capistrano' 
# To use debugger 
# gem 'debugger' 

Это мой database.yml:

# SQLite version 3.x 
# gem install sqlite3 
# 
# Ensure the SQLite 3 gem is defined in your Gemfile 
# gem 'sqlite3' 
development: 
    adapter: sqlite3 
    database: db/development.sqlite3 
    pool: 5 
    timeout: 5000 

# Warning: The database defined as "test" will be erased and 
# re-generated from your development database when you run "rake". 
# Do not set this db to the same as development or production. 
test: 
    adapter: sqlite3 
    database: db/test.sqlite3 
    pool: 5 
    timeout: 5000 

production: 
    adapter: sqlite3 
    database: db/production.sqlite3 
    pool: 5 
    timeout: 5000 

Answer 1

Пожалуйста, убедитесь, что PostgreSQL не уточняются в конфигурации/database.yml - он должен использовать предпочтительную базу данных вместо.

Тем не менее, по умолчанию для нового приложения для рельсов должно быть sqlite.

Answer 2

У меня была та же проблема, но я утра с использованием postgres в разработке. Проблема исчезла, когда я обновил жемчужину pg.

# Gemfile 
# gem "pg", "~> 0.15.0" # old line 
gem "pg", "~> 0.17.0"  # new line 

И я обновил камень:

$> bundle update pg 

Я начал консоли рельсы, и все снова работает.