Question

您好我尝试启动rails控制台，所以我在命令行输入“rails console”，我在控制台上收到此错误消息

/Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/connection_adapters/abstract/connection_specification.rb:45:in `resolve_hash_connection': database configuration does not specify adapter (ActiveRecord::AdapterNotSpecified)
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/connection_adapters/abstract/connection_specification.rb:39:in `resolve_string_connection'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/connection_adapters/abstract/connection_specification.rb:23:in `spec'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/connection_adapters/abstract/connection_specification.rb:127:in `establish_connection'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/railtie.rb:76:in `block (2 levels) in <class:Railtie>'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.2.1/lib/active_support/lazy_load_hooks.rb:36:in `instance_eval'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.2.1/lib/active_support/lazy_load_hooks.rb:36:in `execute_hook'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.2.1/lib/active_support/lazy_load_hooks.rb:43:in `block in run_load_hooks'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.2.1/lib/active_support/lazy_load_hooks.rb:42:in `each'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.2.1/lib/active_support/lazy_load_hooks.rb:42:in `run_load_hooks'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/base.rb:716:in `<top (required)>'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.1/lib/active_record/railtie.rb:41:in `block in <class:Railtie>'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.1/lib/rails/railtie.rb:179:in `call'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.1/lib/rails/railtie.rb:179:in `block in load_console'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.1/lib/rails/railtie.rb:179:in `each'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.1/lib/rails/railtie.rb:179:in `load_console'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.1/lib/rails/engine.rb:429:in `block in load_console'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.1/lib/rails/application/railties.rb:8:in `each'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.1/lib/rails/application/railties.rb:8:in `all'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.1/lib/rails/engine.rb:429:in `load_console'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.1/lib/rails/application.rb:153:in `load_console'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.1/lib/rails/commands/console.rb:27:in `start'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.1/lib/rails/commands/console.rb:8:in `start'
from /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.1/lib/rails/commands.rb:41:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'

似乎无法找到数据库适配器。任何我dea如何解决这个问题？非常感谢

这是database.yml文件：

# SQLite version 3.x
#   gem install sqlite3
#
#   Ensure the SQLite 3 gem is defined in your Gemfile
#   gem 'sqlite3'

#==============================================================================
Listings_development:
  adapter: sqlite3
  database: db/Listings.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.
Listings_test:
  adapter: sqlite3
  database: db/Listings.sqlite3
  pool: 5
  timeout: 5000

Listings_production:
  adapter: sqlite3
  database: db/Listings.sqlite3
  pool: 5
  timeout: 5000

以下是安装的宝石：

捆绑包含的宝石： * actionmailer（3.2.1） * actionpack（3.2.1） * activemodel（3.2.1） * activerecord（3.2.1） * activeresource（3.2.1） * activesupport（3.2.1） * arel（3.0.2） * builder（3.0.0） * bundler（1.0.22） * coffee-rails（3.2.2） *咖啡脚本（2.2.0） * coffee-script-source（1.2.0） * erubis（2.7.0） * execjs（1.3.0） *加息（1.2.1） * i18n（0.6.0） *旅程（1.0.3） * jquery-rails（2.0.1） * json（1.6.5） *邮件（2.4.3） *哑剧型（1.17.2） * multi_json（1.1.0） *多语言（0.3.3） *机架（1.4.1） * rack-cache（1.2） * rack-ssl（1.3.2） *机架测试（0.6.1） * rails（3.2.1） *铁路（3.2.1） *佣金（0.9.2.2） * rdoc（3.12） * sass（3.1.15） * sass-rails（3.2.4） *链轮（2.1.2） * sqlite3（1.3.5） *托尔（0.14.6） *倾斜（1.3.3） *树梢（1.4.10） * tzinfo（0.3.32） * uglifier（1.2.3）

Answer 1

您需要一个名为“开发”的环境，而不是“Listings_development”。重命名您的环境并尝试再次启动控制台。

Answer 2

什么是Listings_development：和Listings_production：。如果您尝试启动它，默认行为是在您的数据库中查找开发：和生产：这就是rails说“Convention over Configuration”。名称也区分大小写

服务器是否正常运行？

启动rails控制台时收到错误消息：

2 个答案: