我是一个红宝石菜鸟,我试图使用Sequel和data_objects适配器来处理一些博客文章:
DB = Sequel.connect('do:mysql://user:pass@localhost/database')
db[posts_query].each do |post|
puts post
end
但是我得到了Sequel::InvalidValue异常,抱怨日期列:
/usr/lib/ruby/1.9.1/time.rb:202:in `local': ArgumentError: argument out of range (Sequel::Inv
下面是我的代码:
init文件:
require 'sequel'
DB = Sequel.connect('sqlite://data.db')
DB.drop_table?(:restaurants)
DB.create_table :restaurants do
primary_key :id
String :name
end
DB.drop_table?(:category)
DB.create_table :category do
primary_key :id
String :name
end
DB.drop_table?(:items)
D
我有这样的代码:
require 'bundler/setup'
require 'sequel'
require 'sequel-rails'
require_relative 'support/benchmark_rails'
DB = Sequel.connect('sqlite::memory:')
COUNT=25
Sequel.extension :migration
Sequel.migration do
change do
create_table(:users) do
p
我一直无法确定我编写的Ruby脚本中出现以下Sequel::PoolTimeout错误的原因是什么:
Sequel::PoolTimeout: Sequel::PoolTimeout
hold at /Users/username/.rvm/gems/jruby-1.7.4@all/gems/sequel-4.2.0/lib/sequel/connection_pool/threaded.rb:100
hold at /Users/username/.rvm/gems/jruby-1.7.4@all/gems/sequel-4.2.0/lib
我仍然不能用头遮掩异步异常。
finally in Control.Exception掩盖了这个动作:
a `finally` sequel =
mask $ \restore -> do
r <- restore a `onException` sequel
_ <- sequel
return r
如果finally内部没有屏蔽,会有什么不同呢?
a `finally` sequel = do
r <- a `onException` sequel
_ <- sequel
return r
回答这个问题将有助于我理解隐藏
我正在尝试让我的rails3应用程序& gem taps & heroku能够很好地一起玩。谷歌搜索的一种解决方案是使用sequel的早期版本。所以我想让bundler使用sequel v3.13.0而不是sequel v3.15.0,但是bundler说:
You have requested:
sequel = 3.13.0
The bundle currently has sequel locked at 3.15.0.
Try running `bundle update sequel`
可能是依赖关系阻止了这一点--我该如何找出呢?我可以用其他方法来做这个吗?谢谢.
当我尝试安装Ruby gem sequel_pg时,我得到了以下错误信息:
~$ sudo gem update
Updating installed gems
Updating sequel_pg
Building native extensions. This could take a while...
ERROR: Error installing sequel_pg:
ERROR: Failed to build gem native extension.
/usr/bin/ruby1.9.1 extconf.rb
checking for main() in -lpq...
当我使用Ruby的sequel库迁移我的应用程序来访问2007时。我得到的错误如下。有人知道如何正确迁移吗?谢谢。
C:\ContractManagement>rackup
C:/Ruby192/lib/ruby/gems/1.9.1/gems/sequel-3.23.0/lib/sequel/adapters/ado.rb:63:
in `method_missing': WIN32OLERuntimeError: (in OLE method `Execute': ) (Sequel::
DatabaseError)
OLE error code:80040E1
在从sqlite到postgresql的转换过程中,我使用了这个命令taps server SQLite://db/development.sqlite3 jey 291298,但是随后出现了以下问题。也许Gemfile有什么问题。我的rails版本是5.1.6。
C:/RailsInstaller/Ruby2.3.3/lib/ruby/gems/2.3.0/gems/sequel-5.8.0/lib/sequel/adapters/sqlite.rb:105:in `initialize': SQLite3::CantOpenException: unable to open dat