Question

我在创建一个新的Rails应用程序时遇到了麻烦，以前它工作正常。

使用mysql或postgres并不能解决问题。每种数据库类型的输出都相同。

创建新应用程序时会发出有关sqlite的第一个警告。

rails new myapp --quiet
Initialized empty Git repository in /home/libros/myapp/.git/
Could not find "config/databases/sqlite3.yml" in any of your source paths. Your current source paths are: 
/home/libros/.rvm/gems/ruby-2.4.2/gems/railties-5.1.4/lib/rails/generators/rails/app/templates

然后尝试使用应用程序执行一些基础操作会导致另一个错误。

rails db:create
rails aborted!
Don't know how to build task 'db:create' (see --tasks)
/home/libros/.rvm/gems/ruby-2.4.2/gems/railties-5.1.4/lib/rails/commands/rake/rake_command.rb:21:in `block in perform'
/home/libros/.rvm/gems/ruby-2.4.2/gems/railties-5.1.4/lib/rails/commands/rake/rake_command.rb:18:in `perform'
/home/libros/.rvm/gems/ruby-2.4.2/gems/railties-5.1.4/lib/rails/command.rb:46:in `invoke'
/home/libros/.rvm/gems/ruby-2.4.2/gems/railties-5.1.4/lib/rails/commands.rb:16:in `<top (required)>'
bin/rails:4:in `require'
bin/rails:4:in `<main>'
(See full trace by running task with --trace)

Answer 1

首先卸载sqllite3并尝试安装它试。

<强>反安装 sudo apt-get remove --auto-remove sqlite3 sudo apt-get purge --auto-remove sqlite3

安装 sudo add-apt-repository ppa：jonathonf / backports sudo apt-get update＆amp;＆amp; sudo apt-get install sqlite3

在config文件夹
中的database.yml中创建一个文件
并粘贴代码

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

保存并重新启动应用程序。

Ruby on Rails无法找到＆＃34; config / databases / sqlite3.yml＆＃34;

1 个答案: