耙子中止未定义的方法“每个”

Posted 2023-03-04

【中文标题】耙子中止未定义的方法“每个”

【英文标题】：Rake aborted undefined method `each'

【发布时间】：2015-12-04 09:43:19

【问题描述】：

下午好。 无法处理癌症数据库：迁移

user@ubuntu:~/furriery/furriery$ rake db:migrate 耙中止！ 未定义的方法each' for "../.openshift/config/database.yml":String /home/user/.rvm/gems/ruby-2.0.0-p643/gems/activerecord-4.1.4/lib/active_record/connection_adapters/connection_specification.rb:163:inresolve_all' /home/user/.rvm/gems/ruby-2.0.0-p643/gems/activerecord-4.1.4/lib/active_record/connection_handling.rb:69:in resolve' /home/user/.rvm/gems/ruby-2.0.0-p643/gems/activerecord-4.1.4/lib/active_record/core.rb:46:inconfigurations=' /home/user/.rvm/gems/ruby-2.0.0-p643/gems/activerecord-4.1.4/lib/active_record/railtie.rb:128:in block (2 levels) in <class:Railtie>' /home/user/.rvm/gems/ruby-2.0.0-p643/gems/activesupport-4.1.4/lib/active_support/lazy_load_hooks.rb:38:ininstance_eval' /home/user/.rvm/gems/ruby-2.0.0-p643/gems/activesupport-4.1.4/lib/active_support/lazy_load_hooks.rb:38:in execute_hook' /home/user/.rvm/gems/ruby-2.0.0-p643/gems/activesupport-4.1.4/lib/active_support/lazy_load_hooks.rb:28:inblock in on_load' /home/user/.rvm/gems/ruby-2.0.0-p643/gems/activesupport-4.1.4/lib/active_support/lazy_load_hooks.rb:27:in each' /home/user/.rvm/gems/ruby-2.0.0-p643/gems/activesupport-4.1.4/lib/active_support/lazy_load_hooks.rb:27:inon_load' /home/user/.rvm/gems/ruby-2.0.0-p643/gems/activerecord-4.1.4/lib/active_record/railtie.rb:118:in block in <class:Railtie>' /home/user/.rvm/gems/ruby-2.0.0-p643/gems/railties-4.1.4/lib/rails/initializable.rb:30:ininstance_exec' /home/user/.rvm/gems/ruby-2.0.0-p643/gems/railties-4.1.4/lib/rails/initializable.rb:30:in run' /home/user/.rvm/gems/ruby-2.0.0-p643/gems/railties-4.1.4/lib/rails/initializable.rb:55:inblock in run_initializers' /home/user/.rvm/gems/ruby-2.0.0-p643/gems/railties-4.1.4/lib/rails/initializable.rb:54:in run_initializers' /home/user/.rvm/gems/ruby-2.0.0-p643/gems/railties-4.1.4/lib/rails/application.rb:300:ininitialize！ /home/user/furriery/furriery/config/environment.rb:5:in <top (required)>' /home/user/.rvm/gems/ruby-2.0.0-p643/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:247:inrequire' /home/user/.rvm/gems/ruby-2.0.0-p643/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:247:in block in require' /home/user/.rvm/gems/ruby-2.0.0-p643/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:232:inload_dependency' /home/user/.rvm/gems/ruby-2.0.0-p643/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:247:in require' /home/user/.rvm/gems/ruby-2.0.0-p643/gems/railties-4.1.4/lib/rails/application.rb:276:inrequire_environment！ /home/user/.rvm/gems/ruby-2.0.0-p643/gems/railties-4.1.4/lib/rails/application.rb:379:in block in run_tasks_blocks' /home/user/.rvm/gems/ruby-2.0.0-p643/bin/ruby_executable_hooks:15:ineval' /home/user/.rvm/gems/ruby-2.0.0-p643/bin/ruby_executable_hooks:15:in `' 任务：TOP => db:migrate => 环境 （通过使用 --trace 运行任务查看完整跟踪）

ruby 2.0.0p643（2015-02-25 修订版 49749）[i686-linux] 导轨 4.1.4 rvm 1.26.11（最新）作者 Wayne E. Seguin，Michal Papis [https://rvm.io/]

【参考方案1】：

检查您的 database.yml 文件并确保每个“:”分隔符后跟一个空格。还要确保你有空格，而不是制表符，用于缩进。您可以在此处检查您的文件是否是有效的 YAML：http://www.yamllint.com/

【讨论】：

网站yamllint.com检查文件.yml 在线宣誓 (): 在第 27 行第 7 列扫描别名时未找到预期的字母或数字字符