Question

我使用heartseed gem在我的rails应用程序中导入数据。它在我的本地机器上工作正常。

当我尝试在heroku上执行相同操作时，我收到以下错误。

** Invoke db:seed (first_time)
** Execute db:seed
** Invoke db:abort_if_pending_migrations (first_time)
** Invoke environment (first_time)
** Execute environment
** Execute db:abort_if_pending_migrations
rake aborted!
require TABLES or CATALOGS if production
/app/vendor/bundle/ruby/2.0.0/gems/heart_seed-0.1.0/lib/heart_seed/db_seed.rb:73:in `import_all'
/app/db/seeds.rb:10:in `<top (required)>'
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.2.3/lib/active_support/dependencies.rb:268:in `load'
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.2.3/lib/active_support/dependencies.rb:268:in `block in load'
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.2.3/lib/active_support/dependencies.rb:240:in `load_dependency'
/app/vendor/bundle/ruby/2.0.0/gems/activesupport-4.2.3/lib/active_support/dependencies.rb:268:in `load'
/app/vendor/bundle/ruby/2.0.0/gems/railties-4.2.3/lib/rails/engine.rb:547:in `load_seed'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.3/lib/active_record/tasks/database_tasks.rb:250:in `load_seed'
/app/vendor/bundle/ruby/2.0.0/gems/activerecord-4.2.3/lib/active_record/railties/databases.rake:180:in `block (2 levels) in <top (required)>'
/app/vendor/bundle/ruby/2.0.0/gems/rake-10.4.2/lib/rake/task.rb:240:in `call'
/app/vendor/bundle/ruby/2.0.0/gems/rake-10.4.2/lib/rake/task.rb:240:in `block in execute'
/app/vendor/bundle/ruby/2.0.0/gems/rake-10.4.2/lib/rake/task.rb:235:in `each'
/app/vendor/bundle/ruby/2.0.0/gems/rake-10.4.2/lib/rake/task.rb:235:in `execute'
/app/vendor/bundle/ruby/2.0.0/gems/rake-10.4.2/lib/rake/task.rb:179:in `block in invoke_with_call_chain'
/app/vendor/ruby-2.0.0/lib/ruby/2.0.0/monitor.rb:211:in `mon_synchronize'
/app/vendor/bundle/ruby/2.0.0/gems/rake-10.4.2/lib/rake/task.rb:172:in `invoke_with_call_chain'
/app/vendor/bundle/ruby/2.0.0/gems/rake-10.4.2/lib/rake/task.rb:165:in `invoke'
/app/vendor/bundle/ruby/2.0.0/gems/rake-10.4.2/lib/rake/application.rb:150:in `invoke_task'
/app/vendor/bundle/ruby/2.0.0/gems/rake-10.4.2/lib/rake/application.rb:106:in `block (2 levels) in top_level'
/app/vendor/bundle/ruby/2.0.0/gems/rake-10.4.2/lib/rake/application.rb:106:in `each'
/app/vendor/bundle/ruby/2.0.0/gems/rake-10.4.2/lib/rake/application.rb:106:in `block in top_level'
/app/vendor/bundle/ruby/2.0.0/gems/rake-10.4.2/lib/rake/application.rb:115:in `run_with_threads'
/app/vendor/bundle/ruby/2.0.0/gems/rake-10.4.2/lib/rake/application.rb:100:in `top_level'
/app/vendor/bundle/ruby/2.0.0/gems/rake-10.4.2/lib/rake/application.rb:78:in `block in run'
/app/vendor/bundle/ruby/2.0.0/gems/rake-10.4.2/lib/rake/application.rb:176:in `standard_exception_handling'
/app/vendor/bundle/ruby/2.0.0/gems/rake-10.4.2/lib/rake/application.rb:75:in `run'
/app/vendor/bundle/ruby/2.0.0/gems/rake-10.4.2/bin/rake:33:in `<top (required)>'
/app/vendor/bundle/ruby/2.0.0/bin/rake:23:in `load'
/app/vendor/bundle/ruby/2.0.0/bin/rake:23:in `<main>'
Tasks: TOP => db:seed

另一方面 - 我已经尝试http://railscasts.com/episodes/396-importing-csv-and-excel Roo进行文件上传并将数据添加到数据库中，对于我来说它似乎对我来说不适用于rails 4.2 - 有人可以指导我吗？

Answer 1

总是值得查看源代码，这是抛出错误的行：

https://github.com/sue445/heart_seed/blob/master/lib/heart_seed/db_seed.rb#L73

看起来您需要设置TABLES和CATALOGS环境变量才能使其在生产中工作（所以在Heroku上）。您可以使用heroku config:set TABLES=...等

为Heroku应用程序设置环境变量

你链接到的Railscast已经很老了，所以从那时起事情就会发生一些变化。 Roo gem似乎得到积极维护，因此您可能会在https://github.com/roo-rb/roo的README中找到最新信息。

通常，每当我必须从电子表格导入数据时，我都将文件保存为CSV，然后编写一个简单的Ruby脚本或Rake文件，只使用CSV库（http://docs.ruby-lang.org/en/2.2.0/CSV.html）来执行导入。

Rails 4.2使用Heart Seed在Heroku上导入数据

1 个答案: