点击迁移失败从sqlite到postgres rails4，ruby 1.9.3

时间：2013-08-13 19:45:58

标签： ruby sqlite postgresql ruby-on-rails-4 taps

我正在尝试将我的Rails应用程序迁移到Postgresql for heroku但是我无法从我的SQLite3数据库获取数据，这是我尝试过的：

为新数据库创建Postgres数据库用户 

$ createuser f3
Shall the new role be a superuser? (y/n) n
Shall the new role be allowed to create databases? (y/n) y
Shall the new role be allowed to create more new roles? (y/n) y

编辑 - 以下更新的命令 - 改为使用 

$ createuser f3 -d -s

创建所需的数据库 

$ createdb -Of3 -Eutf8 f3_development
$ createdb -Of3 -Eutf8 f3_test

更新Gemfile 

gem 'sqlite3'
gem 'pg'
gem 'taps'
$ bundle

更新database.yml 

#development:
#  adapter: sqlite3
#  database: db/development.sqlite3
#  pool: 5
#  timeout: 5000

development:
  adapter: postgresql
  encoding: unicode
  database: f3_development
  pool: 5
  username: f3
  password:

#test:
#  adapter: sqlite3
#  database: db/test.sqlite3
#  pool: 5
#  timeout: 5000

test:
  adapter: postgresql
  encoding: unicode
  database: f3_test
  pool: 5
  username: f3
  password:

启动sqlite数据库上的点击服务器 

$ taps server sqlite://db/development.sqlite3 user password

迁移数据 

$ taps pull postgres://f3@localhost/f3_development http://user:password@localhost:5000

这会产生错误：

MacBook-Pro:devise_example-master david$ taps pull postgres://david:abc123@localhost/f3_development http://user:password@localhost:5000
Receiving schema
Unable to fetch tables information from http://user:password@localhost:5000. Please check the server log.

任何人都得到了解决方案，（我不能使用rvm切换到Ruby 1.9.2因为我的应用程序使用了大量不适用于旧ruby的宝石）。

以下是发布提取时从点按sqlite服务器的日志 

MacBook-Pro:devise_example-master david$ taps server sqlite://db/development.sqlite3 user password
== Sinatra/1.0 has taken the stage on 5000 for production with backup from WEBrick
[2013-08-13 21:38:23] INFO  WEBrick 1.3.1
[2013-08-13 21:38:23] INFO  ruby 1.9.3 (2013-06-27) [x86_64-darwin12.4.0]
[2013-08-13 21:38:23] INFO  WEBrick::HTTPServer#start: pid=4357 port=5000
127.0.0.1 - user [13/Aug/2013 21:38:32] "GET / HTTP/1.1" 200 - 0.0011
localhost - - [13/Aug/2013:21:38:32 CEST] "GET / HTTP/1.1" 200 31
- -> /
127.0.0.1 - user [13/Aug/2013 21:38:32] "POST /sessions HTTP/1.1" 200 - 0.0070
localhost - - [13/Aug/2013:21:38:32 CEST] "POST /sessions HTTP/1.1" 200 46
- -> /sessions
Rack::Utils::OkJson::Error - cannot encode Symbol: :schema_migrations:
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:427:in `valenc'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:438:in `block in arrenc'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:438:in `map'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:438:in `arrenc'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:410:in `encode'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/taps-0.3.24/lib/taps/server.rb:157:in `block in <class:Server>'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:865:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:865:in `block in route'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:521:in `instance_eval'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:521:in `route_eval'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:500:in `block (2 levels) in route!'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:497:in `catch'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:497:in `block in route!'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:476:in `each'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:476:in `route!'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:601:in `dispatch!'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:411:in `block in call!'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:566:in `instance_eval'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:566:in `block in invoke'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:566:in `catch'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:566:in `invoke'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:411:in `call!'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:399:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/deflater.rb:25:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/auth/basic.rb:25:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/commonlogger.rb:33:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:979:in `block in call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:1005:in `synchronize'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:979:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/handler/webrick.rb:60:in `service'
 /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/webrick/httpserver.rb:138:in `service'
 /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/webrick/httpserver.rb:94:in `run'
 /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/webrick/server.rb:191:in `block in start_thread'
ERROR: Rack::Utils::OkJson::Error: cannot encode Symbol: :schema_migrations
An error occurred but Hoptoad was not notified. To use Hoptoad, please
install the 'hoptoad_notifier' gem and set ENV["HOPTOAD_API_KEY"]
127.0.0.1 - user [13/Aug/2013 21:38:32] "GET /sessions/6475330165/pull/table_names HTTP/1.1" 500 - 0.0112
localhost - - [13/Aug/2013:21:38:32 CEST] "GET /sessions/6475330165/pull/table_names HTTP/1.1" 500 522
- -> /sessions/6475330165/pull/table_names
Rack::Utils::OkJson::Error - cannot encode Symbol: :schema_migrations:
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:427:in `valenc'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:438:in `block in arrenc'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:438:in `map'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:438:in `arrenc'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:410:in `encode'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/taps-0.3.24/lib/taps/server.rb:157:in `block in <class:Server>'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:865:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:865:in `block in route'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:521:in `instance_eval'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:521:in `route_eval'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:500:in `block (2 levels) in route!'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:497:in `catch'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:497:in `block in route!'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:476:in `each'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:476:in `route!'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:601:in `dispatch!'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:411:in `block in call!'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:566:in `instance_eval'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:566:in `block in invoke'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:566:in `catch'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:566:in `invoke'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:411:in `call!'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:399:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/deflater.rb:25:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/auth/basic.rb:25:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/commonlogger.rb:33:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:979:in `block in call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:1005:in `synchronize'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:979:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/handler/webrick.rb:60:in `service'
 /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/webrick/httpserver.rb:138:in `service'
 /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/webrick/httpserver.rb:94:in `run'
 /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/webrick/server.rb:191:in `block in start_thread'
ERROR: Rack::Utils::OkJson::Error: cannot encode Symbol: :schema_migrations
An error occurred but Hoptoad was not notified. To use Hoptoad, please
install the 'hoptoad_notifier' gem and set ENV["HOPTOAD_API_KEY"]
127.0.0.1 - user [13/Aug/2013 21:38:32] "GET /sessions/6475330165/pull/table_names HTTP/1.1" 500 - 0.0048
localhost - - [13/Aug/2013:21:38:32 CEST] "GET /sessions/6475330165/pull/table_names HTTP/1.1" 500 522
- -> /sessions/6475330165/pull/table_names
Rack::Utils::OkJson::Error - cannot encode Symbol: :schema_migrations:
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:427:in `valenc'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:438:in `block in arrenc'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:438:in `map'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:438:in `arrenc'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:410:in `encode'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/taps-0.3.24/lib/taps/server.rb:157:in `block in <class:Server>'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:865:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:865:in `block in route'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:521:in `instance_eval'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:521:in `route_eval'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:500:in `block (2 levels) in route!'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:497:in `catch'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:497:in `block in route!'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:476:in `each'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:476:in `route!'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:601:in `dispatch!'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:411:in `block in call!'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:566:in `instance_eval'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:566:in `block in invoke'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:566:in `catch'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:566:in `invoke'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:411:in `call!'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:399:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/deflater.rb:25:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/auth/basic.rb:25:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/commonlogger.rb:33:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:979:in `block in call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:1005:in `synchronize'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:979:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/handler/webrick.rb:60:in `service'
 /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/webrick/httpserver.rb:138:in `service'
 /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/webrick/httpserver.rb:94:in `run'
 /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/webrick/server.rb:191:in `block in start_thread'
ERROR: Rack::Utils::OkJson::Error: cannot encode Symbol: :schema_migrations
An error occurred but Hoptoad was not notified. To use Hoptoad, please
install the 'hoptoad_notifier' gem and set ENV["HOPTOAD_API_KEY"]
127.0.0.1 - user [13/Aug/2013 21:38:32] "GET /sessions/6475330165/pull/table_names HTTP/1.1" 500 - 0.0043
localhost - - [13/Aug/2013:21:38:32 CEST] "GET /sessions/6475330165/pull/table_names HTTP/1.1" 500 522
- -> /sessions/6475330165/pull/table_names
Rack::Utils::OkJson::Error - cannot encode Symbol: :schema_migrations:
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:427:in `valenc'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:438:in `block in arrenc'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:438:in `map'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:438:in `arrenc'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:410:in `encode'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/taps-0.3.24/lib/taps/server.rb:157:in `block in <class:Server>'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:865:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:865:in `block in route'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:521:in `instance_eval'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:521:in `route_eval'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:500:in `block (2 levels) in route!'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:497:in `catch'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:497:in `block in route!'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:476:in `each'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:476:in `route!'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:601:in `dispatch!'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:411:in `block in call!'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:566:in `instance_eval'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:566:in `block in invoke'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:566:in `catch'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:566:in `invoke'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:411:in `call!'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:399:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/deflater.rb:25:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/auth/basic.rb:25:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/commonlogger.rb:33:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:979:in `block in call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:1005:in `synchronize'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:979:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/handler/webrick.rb:60:in `service'
 /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/webrick/httpserver.rb:138:in `service'
 /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/webrick/httpserver.rb:94:in `run'
 /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/webrick/server.rb:191:in `block in start_thread'
ERROR: Rack::Utils::OkJson::Error: cannot encode Symbol: :schema_migrations
An error occurred but Hoptoad was not notified. To use Hoptoad, please
install the 'hoptoad_notifier' gem and set ENV["HOPTOAD_API_KEY"]
127.0.0.1 - user [13/Aug/2013 21:38:32] "GET /sessions/6475330165/pull/table_names HTTP/1.1" 500 - 0.0046
localhost - - [13/Aug/2013:21:38:32 CEST] "GET /sessions/6475330165/pull/table_names HTTP/1.1" 500 522
- -> /sessions/6475330165/pull/table_names
Rack::Utils::OkJson::Error - cannot encode Symbol: :schema_migrations:
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:427:in

..................

lib / ruby​​ / 1.9.1 / webrick / httpserver.rb:138:in service' /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/webrick/httpserver.rb:94:in run'      /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/webrick/server.rb:191:in block in start_thread' ERROR: Rack::Utils::OkJson::Error: cannot encode Symbol: :schema_migrations An error occurred but Hoptoad was not notified. To use Hoptoad, please install the 'hoptoad_notifier' gem and set ENV["HOPTOAD_API_KEY"] 127.0.0.1 - user [13/Aug/2013 21:38:32] "GET /sessions/6475330165/pull/table_names HTTP/1.1" 500 - 0.0045 localhost - - [13/Aug/2013:21:38:32 CEST] "GET /sessions/6475330165/pull/table_names HTTP/1.1" 500 522 - -> /sessions/6475330165/pull/table_names Rack::Utils::OkJson::Error - cannot encode Symbol: :schema_migrations: /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:427:in valenc'      /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:438:in block in arrenc' /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:438:in map'      /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:438:in arrenc' /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:410:in encode'      /usr/local/rvm/gems/ruby-1.9.3-p448/gems/taps-0.3.24/lib/taps/server.rb:157:in block in <class:Server>' /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:865:in call'      /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:865:in block in route' /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:521:in instance_eval'

... 

ERROR: Rack::Utils::OkJson::Error: cannot encode Symbol: :schema_migrations
An error occurred but Hoptoad was not notified. To use Hoptoad, please
install the 'hoptoad_notifier' gem and set ENV["HOPTOAD_API_KEY"]
127.0.0.1 - user [13/Aug/2013 21:38:32] "GET /sessions/6475330165/pull/table_names HTTP/1.1" 500 - 0.0050
localhost - - [13/Aug/2013:21:38:32 CEST] "GET /sessions/6475330165/pull/table_names HTTP/1.1" 500 522
- -> /sessions/6475330165/pull/table_names
Rack::Utils::OkJson::Error - cannot encode Symbol: :schema_migrations:
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:427:in `valenc'

... 

 /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/webrick/httpserver.rb:94:in `run'
 /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/webrick/server.rb:191:in `block in start_thread'
ERROR: Rack::Utils::OkJson::Error: cannot encode Symbol: :schema_migrations
An error occurred but Hoptoad was not notified. To use Hoptoad, please
install the 'hoptoad_notifier' gem and set ENV["HOPTOAD_API_KEY"]
127.0.0.1 - user [13/Aug/2013 21:38:32] "GET /sessions/6475330165/pull/table_names HTTP/1.1" 500 - 0.0045
localhost - - [13/Aug/2013:21:38:32 CEST] "GET /sessions/6475330165/pull/table_names HTTP/1.1" 500 522
- -> /sessions/6475330165/pull/table_names
Rack::Utils::OkJson::Error - cannot encode Symbol: :schema_migrations:
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:427:in `valenc'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:438:in `block in arrenc'

... 

 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/commonlogger.rb:33:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:979:in `block in call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:1005:in `synchronize'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:979:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/handler/webrick.rb:60:in `service'
 /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/webrick/httpserver.rb:138:in `service'
 /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/webrick/httpserver.rb:94:in `run'
 /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/webrick/server.rb:191:in `block in start_thread'
ERROR: Rack::Utils::OkJson::Error: cannot encode Symbol: :schema_migrations
An error occurred but Hoptoad was not notified. To use Hoptoad, please
install the 'hoptoad_notifier' gem and set ENV["HOPTOAD_API_KEY"]
127.0.0.1 - user [13/Aug/2013 21:38:32] "GET /sessions/6475330165/pull/table_names HTTP/1.1" 500 - 0.0159
localhost - - [13/Aug/2013:21:38:32 CEST] "GET /sessions/6475330165/pull/table_names HTTP/1.1" 500 522
- -> /sessions/6475330165/pull/table_names
Rack::Utils::OkJson::Error - cannot encode Symbol: :schema_migrations:
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:427:in `valenc'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:438:in

....... 

 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:411:in `call!'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:399:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/deflater.rb:25:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/auth/basic.rb:25:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/commonlogger.rb:33:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:979:in `block in call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:1005:in `synchronize'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:979:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/handler/webrick.rb:60:in `service'
 /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/webrick/httpserver.rb:138:in `service'
 /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/webrick/httpserver.rb:94:in `run'
 /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/webrick/server.rb:191:in `block in start_thread'
ERROR: Rack::Utils::OkJson::Error: cannot encode Symbol: :schema_migrations
An error occurred but Hoptoad was not notified. To use Hoptoad, please
install the 'hoptoad_notifier' gem and set ENV["HOPTOAD_API_KEY"]
127.0.0.1 - user [13/Aug/2013 21:38:32] "GET /sessions/6475330165/pull/table_names HTTP/1.1" 500 - 0.0048
localhost - - [13/Aug/2013:21:38:32 CEST] "GET /sessions/6475330165/pull/table_names HTTP/1.1" 500 522
- -> /sessions/6475330165/pull/table_names
Rack::Utils::OkJson::Error - cannot encode Symbol: :schema_migrations:
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:427:in `valenc'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:438:in `block in arrenc'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:438:in `map'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:438:in `arrenc'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:410:in `encode'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/taps-0.3.24/lib/taps/server.rb:157:in `block in <class:Server>'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:865:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:865:in `block in route'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:521:in `instance_eval'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:521:in `route_eval'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:500:in `block (2 levels) in route!'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:497:in `catch'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:497:in `block in route!'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:476:in `each'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:476:in `route!'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:601:in `dispatch!'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:411:in `block in call!'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:566:in `instance_eval'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:566:in `block in invoke'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:566:in `catch'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:566:in `invoke'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:411:in `call!'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:399:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/deflater.rb:25:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/auth/basic.rb:25:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/commonlogger.rb:33:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:979:in `block in call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:1005:in `synchronize'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:979:in `call'
 /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/handler/webrick.rb:60:in `service'
 /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/webrick/httpserver.rb:138:in `service'
 /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/webrick/httpserver.rb:94:in `run'
 /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/webrick/server.rb:191:in `block in start_thread'
ERROR: Rack::Utils::OkJson::Error: cannot encode Symbol: :schema_migrations
An error occurred but Hoptoad was not notified. To use Hoptoad, please
install the 'hoptoad_notifier' gem and set ENV["HOPTOAD_API_KEY"]
127.0.0.1 - user [13/Aug/2013 21:38:32] "GET /sessions/6475330165/pull/table_names HTTP/1.1" 500 - 0.0045
localhost - - [13/Aug/2013:21:38:32 CEST] "GET /sessions/6475330165/pull/table_names HTTP/1.1" 500 522
- -> /sessions/6475330165/pull/table_names

3 个答案:

答案 0 :(得分：20)

这对我有用：

  1. 我从项目目录中找到了一个目录，然后执行了以下操作
  2. gem install taps
  3. gem uninstall rack
  4. gem install rack --version 1.0.1

    5. 从项目目录启动sqlite服务器，在“one up directory”运行：

    taps pull postgres://f3@localhost/f3_development http://user:password@localhost:5000

    然后像以前一样进行迁移并且它有效。我安装了1.5.2机架，所以我不得不拆下它并用机架1.0.1替换它。我正在使用ruby 2.0.0-p0和rails 4.0.0.beta1

    似乎只有pull命令需要旧版本的机架，因此服务器可以运行在较新的1.5.2版本上......

答案 1 :(得分：4)

@David Karlsson的回答也适用于我。除非我必须在水龙头完成拉动后更新后架

gem update rack

并运行bundle install以恢复所有宝石的工作。

我在rails 3.2和ruby 1.9.3

答案 2 :(得分：1)

谢谢@DavidKarlsson，只需添加您的答案，就无需卸载现有机架。遵循https://github.com/ricardochimal/taps/issues/128中@hak8or的建议，我使用Gemfile来确保使用机架版本1.0.1。但在我安装后，我有各种版本的机架

$ gem uninstall 'rack'

Select gem to uninstall:
1. rack-1.0.1
2. rack-1.4.4
3. rack-1.4.5
4. rack-1.5.2
5. All versions

并且不想卸载它们，因为这可能会影响我在同一台机器上的其他项目。当我运行水龙头时，它将使用最新的机架1.5.2，所以我所做的是使用bundle exec运行水龙头，在我的情况下

bundle exec taps server sqlite://db/development.sqlite3 root root

希望它有所帮助！

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