Question

运行rake db时，我总是遇到以下错误：test：prepare。什么可以导致这个？ rake db：create工作得很好。

 Adam-MacBook-Pro:katy adam$ bundle exec rake db:test:prepare
    rake aborted!
    NoMethodError: undefined method `[]' for nil:NilClass
    /Users/adam/.rvm/gems/ruby-2.2.2/gems/activerecord-4.2.4/lib/active_record/tasks/database_tasks.rb:163:in `purge'
    /Users/adam/.rvm/gems/ruby-2.2.2/gems/activerecord-4.2.4/lib/active_record/railties/databases.rake:356:in `block (3 levels) in <top (required)>'
    /Users/adam/.rvm/gems/ruby-2.2.2/gems/activerecord-4.2.4/lib/active_record/railties/databases.rake:362:in `block (3 levels) in <top (required)>'
    /Users/adam/.rvm/gems/ruby-2.2.2/bin/ruby_executable_hooks:15:in `eval'
    /Users/adam/.rvm/gems/ruby-2.2.2/bin/ruby_executable_hooks:15:in `<main>'

的database.yml

<%= Rails.env %>:
  adapter: mysql2
  encoding: utf8
  pool: <%= ENV['DB_POOL'] || 5 %>
  username: <%= ENV['DB_USER'] || 'root' %>
  password: <%= ENV['DB_PASSWORD'] || nil %>
  timeout: <%= ENV['DB_TIMEOUT'] || 5000 %>
  host: <%= ENV['DB_HOST'] || 'localhost' %>
  port: <%= ENV['DB_PORT'] || 3306 %>
  database: <%= ENV['DB_NAME'] || "website#{Rails.env}" %>

Answer 1

运行rake命令时尝试指定RAILS_ENV：

RAILS_ENV=test bundle exec rake db:test:prepare

Answer 2

参考这可能是同一个问题rake db:test:load, undefined method `[]' for nil:NilClass

或试试这个

RAILS_ENV=test rake db:setup

rake test prepare：NoMethodError：未定义的方法`[]'为nil：NilClass

2 个答案: