安裝Spree ActiveRecord :: ConnectionNotEstablished錯誤

Question

我想使用rails和spree gem（http://spreecommerce.com/）創建一個網上商店。

在我的Mac（os x lion）上將Rails開發擱置了一段時間，我使用此指南從頭開始安裝了所有內容： http : //tecparatodos.com/2011/07/24/installing-ruby-on-rails-on- mac-os-x-lion /和帶有brew的mysql。

我還遵循了Spree的“入門文檔” http://guides.spreecommerce.com/getting_started.html

發生的問題是在配置數據庫並執行例如

rake db:create

我總是收到ActiveRecord :: ConnectionNotEstablished錯誤。 首先，我認為這與我的mysql安裝有關，但是經過數小時的檢查和重新安裝后，我才發現這實際上是因為狂歡的緣故。 每當我在Gemfile中添加“ gem'spree'”時，就會發生此錯誤。 當我刪除它並進行“捆綁安裝”時，一切正常。 我在景觀項目上有一些Rails經驗，但是狂歡對我來說是新的。 知道可能是什么問題嗎？

我的database.yml：

development:
  adapter: mysql2
  encoding: utf8
  reconnect: false
  database: asiashop_development
  pool: 5
  username: root
  password:
  socket: /tmp/mysql.sock

# 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: mysql2
  encoding: utf8
  reconnect: false
  database: asiashop_test
  pool: 5
  username: root
  password:
  socket: /tmp/mysql.sock

production:
  adapter: mysql2
  encoding: utf8
  reconnect: false
  database: asiashop_production
  pool: 5
  username: root
  password:
  socket: /tmp/mysql.sock

而當我執行“ rails c”時的stracktrace：

/Users/mark/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.0.rc2/lib/active_record/connection_adapters/abstract/connection_pool.rb:374:in `retrieve_connection': ActiveRecord::ConnectionNotEstablished (ActiveRecord::ConnectionNotEstablished)
    from /Users/mark/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.0.rc2/lib/active_record/connection_adapters/abstract/connection_specification.rb:168:in `retrieve_connection'
    from /Users/mark/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.0.rc2/lib/active_record/connection_adapters/abstract/connection_specification.rb:142:in `connection'
    from /Users/mark/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.0.rc2/lib/active_record/model_schema.rb:224:in `columns'
    from /Users/mark/.rvm/gems/ruby-1.9.2-p290/gems/activerecord-3.2.0.rc2/lib/active_record/model_schema.rb:244:in `column_names'
    from /Users/mark/.rvm/gems/ruby-1.9.2-p290/gems/rd_searchlogic-3.0.1/lib/searchlogic/named_scopes/ordering.rb:61:in `ordering_condition_details'
    from /Users/mark/.rvm/gems/ruby-1.9.2-p290/gems/rd_searchlogic-3.0.1/lib/searchlogic/named_scopes/ordering.rb:52:in `method_missing'
    from /Users/mark/.rvm/gems/ruby-1.9.2-p290/gems/spree_core-0.40.0/lib/spree_core/find_by_param.rb:105:in `<class:Base>'
    from /Users/mark/.rvm/gems/ruby-1.9.2-p290/gems/spree_core-0.40.0/lib/spree_core/find_by_param.rb:104:in `<top (required)>'
    from /Users/mark/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.2.0.rc2/lib/active_support/dependencies.rb:251:in `require'
    from /Users/mark/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.2.0.rc2/lib/active_support/dependencies.rb:251:in `block in require'
    from /Users/mark/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.2.0.rc2/lib/active_support/dependencies.rb:236:in `load_dependency'
    from /Users/mark/.rvm/gems/ruby-1.9.2-p290/gems/activesupport-3.2.0.rc2/lib/active_support/dependencies.rb:251:in `require'
    from /Users/mark/.rvm/gems/ruby-1.9.2-p290/gems/spree_core-0.40.0/lib/spree_core.rb:47:in `<top (required)>'
    from /Users/mark/.rvm/gems/ruby-1.9.2-p290/gems/spree-0.40.0/lib/spree.rb:1:in `require'
    from /Users/mark/.rvm/gems/ruby-1.9.2-p290/gems/spree-0.40.0/lib/spree.rb:1:in `<top (required)>'
    from /Users/mark/.rvm/gems/ruby-1.9.2-p290@global/gems/bundler-1.0.21/lib/bundler/runtime.rb:68:in `require'
    from /Users/mark/.rvm/gems/ruby-1.9.2-p290@global/gems/bundler-1.0.21/lib/bundler/runtime.rb:68:in `block (2 levels) in require'
    from /Users/mark/.rvm/gems/ruby-1.9.2-p290@global/gems/bundler-1.0.21/lib/bundler/runtime.rb:66:in `each'
    from /Users/mark/.rvm/gems/ruby-1.9.2-p290@global/gems/bundler-1.0.21/lib/bundler/runtime.rb:66:in `block in require'
    from /Users/mark/.rvm/gems/ruby-1.9.2-p290@global/gems/bundler-1.0.21/lib/bundler/runtime.rb:55:in `each'
    from /Users/mark/.rvm/gems/ruby-1.9.2-p290@global/gems/bundler-1.0.21/lib/bundler/runtime.rb:55:in `require'
    from /Users/mark/.rvm/gems/ruby-1.9.2-p290@global/gems/bundler-1.0.21/lib/bundler.rb:122:in `require'
    from /Users/mark/Documents/Workspace/Asia Testshop/asiashop/config/application.rb:7:in `<top (required)>'
    from /Users/mark/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.0.rc2/lib/rails/commands.rb:39:in `require'
    from /Users/mark/.rvm/gems/ruby-1.9.2-p290/gems/railties-3.2.0.rc2/lib/rails/commands.rb:39:in `<top (required)>'
    from script/rails:6:in `require'
    from script/rails:6:in `<main>'

如我所寫，這不可能是一般的mysql對接問題，因為只要我不使用spree gem，一切就可以正常工作。

Answer 1

您需要像這樣將Spree作為gem添加到Gemfile ：

gem 'spree', '0.70.3'

這將安裝Spree的最新穩定版本。 問題似乎是Bundler選擇了一個很舊的Spree版本（0.40.0）來運行，這是完全錯誤的。

Answer 2

不能真正查明問題的根源，但是在卸載所有gems之后從頭開始重新安裝它們之后，我就可以正常使用了。