我有一个Rails应用程序,目前在开发中使用sqlite,在Heroku上使用postgresql。但是,我试图改变它,以便我在开发中使用postgresql。
My Gemfile目前看起来像这样:
source 'https://rubygems.org'
gem 'rails', '4.2.2'
gem 'bcrypt', '3.1.7'
gem 'bootstrap-sass', '3.2.0.0'
gem 'sass-rails', '5.0.2'
gem 'uglifier', '2.5.3'
gem 'coffee-rails', '4.1.0'
gem 'jquery-rails', '4.0.3'
gem 'jquery-ui-rails', '~> 4.2.1'
gem 'turbolinks', '2.3.0'
gem 'jquery-turbolinks'
gem 'jbuilder', '2.2.3'
gem 'sdoc', '0.4.0', group: :doc
gem 'chart-js-rails'
gem 'gon'
gem 'lodash-rails'
group :development, :test do
#gem 'sqlite3', '1.3.9'
gem 'pg', '0.17.1'
gem 'byebug', '3.4.0'
gem 'web-console', '2.0.0.beta3'
gem 'spring', '1.1.3'
end
group :production do
gem 'pg', '0.17.1'
gem 'rails_12factor', '0.0.2'
gem 'puma', '3.1.0'
end
因此,在开发小组中,我已将'sqlite3' gem
替换为'pg' gem
。
我已经修改了database.yml,看起来像这样:
default: &default
adapter: postgresql
host: localhost
pool: 5
timeout: 5000
development:
<<: *default
database: abc_development
username: abc
password: password1
test:
<<: *default
database: abc_test
username: abc
password: password1
production:
<<: *default
database: abc_production
username: abc
password: password1
我已经执行了bundle install --without production
但是,当我尝试bundle exec rake db:create db:migrate
时,我收到以下错误:
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).
答案 0 :(得分:2)
到目前为止,我看到Rails是对的:你只在组pg
中指定了production
gem,但是你说你也想在开发中使用它。
因此,只需将其从production
组移至Gemfile