无法加载“active_record/connection_adapters/sqlite3_adapter" [英] Could not load 'active_record/connection_adapters/sqlite3_adapter'
问题描述
我正在尝试在我的笔记本电脑(Debian Wheezy 64 位)上安装 ROR.
I'm trying to install ROR on my notebook (Debian Wheezy 64 bit).
起初我遇到了这个问题(在此处输入链接描述 ) 由第一个答案解决.
On first I had this issue (enter link description here ) solved by the first answer.
现在 rails 服务器启动了,但是在浏览器上浏览 localhost:3000 我收到以下错误:
Now the rails server starts, but surfing on the browser at localhost:3000 I get the following error:
无法加载active_record/connection_adapters/sqlite3_adapter".确保 config/database.yml 中的适配器有效.如果您使用mysql"、mysql2"、postgresql"或sqlite3"以外的适配器,请将必要的适配器 gem 添加到 Gemfile 中.
Could not load 'active_record/connection_adapters/sqlite3_adapter'. Make sure that the adapter in config/database.yml is valid. If you use an adapter other than 'mysql', 'mysql2', 'postgresql' or 'sqlite3' add the necessary adapter gem to the Gemfile.
我已经安装了 ruby 2.0.0 编译源代码,没有错误或错误.然后我安装了一些需要的库(sqlite3、libsqlite3-dev)...
I've installed ruby 2.0.0 compiling the source code, no errors or mistakes. Then I've installed some needed libraries (sqlite3, libsqlite3-dev )...
这是我的 GemFile:
Here is my GemFile:
'https://rubygems.org'
-# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '4.0.0'
-# Use sqlite3 as the database for Active Record
gem 'sqlite3'
-# Use SCSS for stylesheets
gem 'sass-rails', '~> 4.0.0'
-# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
-# Use CoffeeScript for .js.coffee assets and views
gem 'coffee-rails', '~> 4.0.0'
-# See https://github.com/sstephenson/execjs#readme for more supported runtimes
-# gem 'therubyracer', platforms: :ruby
-# Use jquery as the JavaScript library
gem 'jquery-rails'
-# Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
gem 'turbolinks'
-# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 1.2'
group :doc do
-# bundle exec rake doc:rails generates the API under doc/api.
gem 'sdoc', require: false
end
-# Use ActiveModel has_secure_password
-# gem 'bcrypt-ruby', '~> 3.0.0'
-# Use unicorn as the app server
-# gem 'unicorn'
-# Use Capistrano for deployment
-# gem 'capistrano', group: :development
-# Use debugger
-# gem 'debugger', group: [:development, :test]
gem 'execjs'
gem 'therubyracer'
在我的 database.yml 中:
And in my 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
我的宝石版本:
ruby 2.0.0
rails 4.0.0
sqlite 1.3.7
推荐答案
今天在 Sinatra 中运行 rake db:create_migration 时遇到了这个错误.我的错误是在 app.rb 中错误地指定了sqlite:"数据库类型,而它应该是sqlite 3:".示例:
Came across this error playing around in Sinatra today when running rake db:create_migration. My error was erroneously specifying a "sqlite:" database type in app.rb when it should have been "sqlite 3 :". Example:
错误:
set :database, 'sqlite:name.db'
正确:
set :database, 'sqlite3:name.db'
这篇关于无法加载“active_record/connection_adapters/sqlite3_adapter"的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!