Ruby gem 'pg' 报错(2018-03-04)

Ruby gem 'pg' 报错:Gem::LoadError can't activate pg (~> 0.18), already activated pg-1.0.0. Make sure all dependencies are added to Gemfile.

在一个Rails应用里,GemFile配置postgres依赖

gem 'pg'

报错:

Gem::LoadError can't activate pg (~> 0.18), already activated pg-1.0.0. Make sure all dependencies are added to Gemfile.

报这个错误的原因是pg-1.0.0与Rails 5不兼容。

解决方法

Rails 5,Gemfile修改如下:

gem 'pg', '~> 0.18'

Rails < 5

gem 'pg', '~> 0.11'

修改后,更新一下依赖的包

bundle update pg

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