स्क्लाइट से पोस्टग्रेस रेल 4 में रूबिंग माइग्रेशन, रूबी 1.9.3

Question

मैं अपने रेल ऐप को पोस्टोक्रेस्क्ल में माइग्रेट करने के लिए माइग्रेट करने की कोशिश कर रहा हूं, हालांकि मुझे अपने SQLite3 डेटाबेस से डेटा प्राप्त करने के लिए टैप नहीं मिल पा रहे हैं, यहां मैंने जो कोशिश की है : - अपडेट किया गया आदेश नीचे -

$ 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 

संपादित नए डेटाबेस के लिए Postgres डेटाबेस उपयोगकर्ता बनाएँ इस बजाय

$ createuser f3 -d -s 

01 का उपयोग

आवश्यक डेटाबेस बनाएं

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

अद्यतन Gemfile

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

अद्यतन 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: 

SQLite डेटाबेस पर नल सर्वर प्रारंभ करें

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

डेटा

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

माइग्रेट यह एक त्रुटि पैदावार:

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. 

कोई भी इस के लिए एक ठीक है, (मैं आरवीएम का उपयोग कर रूबी 1.9.2 पर स्विच नहीं कर सकते हैं क्योंकि मेरा ऐप पुराने रबड़ के लिए काम नहीं कर रहे कई रत्नों का उपयोग करता है)। जब पुल जारी किया जाता है

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

और नीचे नल SQLite सर्वर से लॉग है /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 रन ' /usr/local/rvm/rubies/ruby-1.9.3-p448/lib/ruby/1.9.1/webrick/server.rb : 1 9 1: 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 वैलेंक ' /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rbliament38: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 मानचित्र' /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rbliament38:in arrenc' /usr/local/rvm/gems/ruby-1.9.3-p448/gems/rack-1.5.2/lib/rack/utils/okjson.rb:410:in एन्कोड ' /usr/local/rvm/रत्न/रूबी-1.9.3-पी 448/रत्न/नल-0.3.24/lib/taps/server.rb: 157: block in <class:Server>' /usr/local/rvm/gems/ruby-1.9.3-p448/gems/sinatra-1.0/lib/sinatra/base.rb:865:in कॉल ' /usr/local/rvm/gems/ruby-1.9.3-p448/ रत्न/सिनात्रा-1.0/lib/सिनात्रा/base.rb: 865: में 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 

Answer 1

यह मेरे लिए काम किया:

1. मैं अपने प्रोजेक्ट निर्देशिका से एक निर्देशिका ऊपर चला गया उसके बाद निम्न
2. gem install taps
किया
3. gem uninstall rack
4. gem install rack --version 1.0.1

प्रारंभ परियोजना निर्देशिका से SQLite सर्वर, 'एक अप निर्देशिका' चलाने में:

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

फिर से पहले के रूप में प्रवास किया था और यह काम किया। मेरे पास रैक 1.5.2 स्थापित था इसलिए मुझे इसे हटाना पड़ा और इसे रैक 1.0.1 के साथ बदलना पड़ा। मैं रूबी 2.0.0-p0 उपयोग कर रहा हूँ और रेल 4.0.0.beta1

ऐसा लगता है तो सर्वर नए 1.5.2 संस्करण पर चल सके केवल पुल आदेश रैक के पुराने संस्करण की जरूरत ...

Answer 2

@ डेविड कार्लसन के जवाब ने भी मेरे लिए काम किया। सिवाय मैं अद्यतन करने के लिए किया था वापस रैक एक बार टैप करता पुल

gem update rack 

पूरा किया और bundle install चलाने वापस काम कर रहे मेरे सभी जवाहरात प्राप्त करने के लिए किया है।

मैं रेल 3.2 पर हूँ और रूबी 1.9.3

Answer 3

आप @DavidKarlsson धन्यवाद, बस अपने जवाब में जोड़ने से, वहाँ मौजूदा रैक की स्थापना रद्द करने की कोई जरूरत नहीं है। https://github.com/ricardochimal/taps/issues/128 में @ hak8or की अनुशंसा के बाद मैंने रैक संस्करण 1.0.1 के उपयोग को सुनिश्चित करने के लिए एक Gemfile का उपयोग किया। लेकिन उसके बाद मैं स्थापित मैं रैक

$ 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 

और उन्हें अनइंस्टॉल नहीं करना चाहता था के विभिन्न संस्करणों की थी, उसकी वजह अन्य परियोजनाओं मैं एक ही मशीन में है प्रभावित कर सकता है। यह नवीनतम, रैक 1.5.2 का प्रयोग करेंगे जब मैं नल चलाने के लिए, तो क्या मैंने किया था, बंडल कार्यकारी का उपयोग कर नल चलाने के लिए था मेरे मामले में

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

आशा है कि यह मदद करता है!