我在让 Sequel 连接到 MS SQL 数据库时遇到问题。我已经安装了以下内容：
- UnixODBC
- 免费TDS
我已经配置了这两个软件包，以下命令允许我毫无问题地连接到我的数据库：
- isql
- tsql
- osql
但是，当我使用 Sequel.odbc 命令从 Ruby 代码中尝试它时，我收到以下错误：
ODBC::Error: IM003 (0) [iODBC][Driver Manager]无法加载指定的驱动程序。
这是我所能得到的。我曾经首先收到另一个错误，但通过重做配置部分设法解决了这个问题。我想我错过了那里的东西。
编辑
这是我的基础谈话者类的代码。它基本上像 rails 一样加载一个 YAML 文件，保存数据库设置并建立与数据库的连接。这似乎有效，尝试手动从续集中返回一个 DB 对象：
module Talkers
require 'yaml'
require 'sequel'
class BaseTalker
# This function will load the desired settings as a hash from the database.yml file
# in the config folder. The data will be returned as a hash following the standard
# YAML structure.
def self.load_config(name)
cfg = YAML::load(File.open(File.join(ENV['API_ROOT'], 'config', 'database.yml')))
cfg.key?(name) ? cfg[name] : nil
end
# This function will establish a connection with the Florensia User database and return
# the Sequel database object, so that queries can be executed against the database.
def self.connect_to_user_db
settings = self.load_config("florensia_user_#{ENV['RACK_ENV']}")
Sequel.odbc settings['dsn'], :db_type => settings['adapter'], :user => settings['user'], :password => settings['password']
end
end
end
下面的类继承自 talker 并为 User 执行某些操作。它包含特定于游戏的数据库逻辑。当我调用这个逻辑时，我收到错误：
module Talkers
require 'yaml'
require 'sequel'
class LoginDbTalker < BaseTalker
#
# Bans the specified User from the game. The function requires the following information
# to be supplied in order for the ban to be properly set:
# - id : The identifier of the account.
# - gm_name : The name of the GM setting the ban.
# - punish_code : The punishment code being applied on the account.
# - days : The duration of the ban in days, starting from today.
#
# The function will return true if the ban has been properly set; otherwise the function
# will return false.
def self.ban_user(options = {})
return false if options.empty?
db = self.connect_to_user_db
ds = db[:tbl_User].filter(:id => options[:id])
ps = ds.prepare(:update, :apply_ban)
ps.call(
:punishcode => options[:punish_code],
:punishstory => "Banned by #{options[:gm_name]}",
:punishdate => Date.today,
:punishfreedate => (options[:days].to_i == -1) ? (Date.today + (30 * 265)) : (Date.today + options[:days].to_i))
true
rescue Exception => e
puts "Exception caught in ban_user: #{e.to_s}"
puts "Provided variables: id=#{options[:id]}, gm_name=#{options[:gm_name]}, punish_code=#{options[:punish_code]}, days=#{options[:days]}"
false
end
#
# Unbans the specified User from the game. The function requires the following information
# to be supplied in order for the ban to be properly lifted:
# - id : The identifier of the account.
# - gm_name : The name of the GM removing the ban.
#
# The function will return true if the ban has been properly lifted; otherwise the function
# will return false.
def self.unban_user(options = {})
db = self.connect_to_user_db
ds = db[:tbl_User].filter(:id => options[:id])
ps = ds.prepare(:update, :lift_ban)
ps.call(
:punishcode => '0',
:punishstory => "Ban removed by #{options[:gm_name]}",
:punishdate => Date.today,
:punishfreedate => Date.today
)
true
rescue Exception => e
puts "Exception caught in unban_user: #{e.to_s}"
puts "Provided variables: id=#{options[:id]}, gm_name=#{options[:gm_name]}"
false
end
#
# Kicks the specified User from the game, regardless on the server or character he currently is on.
# This requires a direct connection to the game servers so a specialized command can be sent that
# instruct the server to close the connection with the offending player.
# The function returns true if the kick succeeded; otherwise false.
def self.kick_player(id)
false
end
end
end
调用任何禁止/取消禁止函数都会导致错误消息。
编辑2
我添加了文件夹 /Library/ODBC 并将所有配置文件链接到那里以用于 iODBC。这消除了我之前遇到的错误，现在给我带来了这个错误：
ODBC::Error: 01000 (20002) [FreeTDS][SQL Server]自适应服务器连接失败
所以看来我又取得了一些进展