Question

我正在使用带有rails的postgresql。昨天我为某个副项目安装了mysql，今天我运行rails c时，它出现了以下错误，

home/rahul/.rvm/gems/ruby-2.6.0/gems/arel-9.0.0/lib/arel/visitors.rb:7:in require': cannot load such file -- arel/visitors/mysql (LoadError)

我没有更改Rails项目中的任何内容。我的Rails应用程序仍然使用Postgres

database.yml

default: &default
  adapter: postgresql
  pool: 50
  timeout: 5000
  # host: localhost
  encoding: utf8
development:
  <<: *default
  database: enquiry_dispatch_development
test:
  <<: *default
  database: enquiry_dispatch_test

Answer 1

您好，只需删除宝石“ arel”

gem uninstall arel

然后运行

bundle install

安装MySQL后，Rails在寻找MySQL而不是Postgres

1 个答案: