4
這是我的第一個項目西納特拉,我敢下旬,我意識到,在做一旦ActiveRecord使用,我遇到問題的多個請求時。如果我只提出一個請求,每個請求都是獨立的。但是當我同時打電話時,我會失敗。Sinatra/ActiveRecord無法處理同時發生的請求?
到目前爲止,我已經收窄的問題同時在兩個ActiveRecord的請求。也許我沒有正確設置ActiveRecord?我使用PostgreSQL是因爲Heroku使用它,並且我不想改變。 (這個問題發生在Heroku上了。)
這裏的日誌:
192.168.1.113 - - [30/Sep/2012:10:33:00 MDT] "GET /version/current?platform=android HTTP/1.1" 200 33
- -> /version/current?platform=android ActiveRecord::StatementInvalid - NoMethodError: undefined method `fields' for nil:NilClass: SELECT "rankings".* FROM "rankings" WHERE "rankings"."user_id" = 1 LIMIT 1:
/Users/zablanc/.rvm/gems/[email protected]/gems/activerecord-3.2.7/lib/active_record/connection_adapters/postgresql_adapter.rb:667:in `block in exec_query'
...
Warning! Rack::Session::Cookie data size exceeds 4K.
Warning! Rack::Session::Cookie failed to save session. Content dropped.
192.168.1.113 - - [30/Sep/2012:10:33:01 MDT] "GET /badges/all HTTP/1.1" 200 311
- -> /badges/all
192.168.1.113 - - [30/Sep/2012:10:33:01 MDT] "GET /moves/ranking/all HTTP/1.1" 500 166185
- -> /moves/ranking/all
我不知道如何閉嘴這些cookie的警告,壽他們似乎對應用程序沒有任何影響。下面介紹如何配置我的應用程序(我從主腳本配置文件要求):
enable :logging
use ActiveRecord::ConnectionAdapters::ConnectionManagement
use Rack::Session::Cookie, :key => 'rack.session',
:path => '/',
:expire_after => 31_536_000, # In seconds
:secret => 'jeowkfj...secret...kjn5'
ActiveRecord::Base.include_root_in_json = false
def establish_connection(url)
db = URI.parse(url)
ActiveRecord::Base.establish_connection(
:adapter => db.scheme == 'postgres' ? 'postgresql' : db.scheme,
:host => db.host,
:port => db.port,
:username => db.user,
:password => db.password,
:database => db.path[1..-1],
:encoding => 'utf8'
)
end
configure :development do
establish_connection('postgres://postgres:[email protected]:5432/emm')
end
configure :test do
establish_connection('postgres://postgres:[email protected]:5432/emm-test')
end
configure :production do
establish_connection(ENV['DATABASE_URL'])
end
我猜我不設立ActiveRecord的權利,但我覺得它就像我以前做的教程看到。是什麼賦予了?