How to connect to Microsoft sql server2005 from rails on linux（centos5)
Assumed:
ruby 1.8.6
rails : 2.2.2
centos5 64bit
sqlserver2005
Required:
unixODBC >= 2.2.11 (http://www.unixodbc.org/)
FreeTDS >= 0.63 (http://www.freetds.org/)
Ruby ODBC >= 0.996 (http://www.ch-werner.de/rubyodbc/)
Ruby DBI >= 0.0.23 (http://ruby-dbi.sourceforge.net/)
First:
Use ~/.bashrc for your local profile or /etc/profile to set this for all users.
export ODBCINI=/etc/odbc.ini
export ODBCSYSINI=/etc
export FREETDSCONF=/etc/freetds/freetds.conf
install unixODBC:
apt-get install unixODBC or yum install unixODBC
but I am use rpm,like this: rpm -ivh unixODBC-2.2.11-7.1.x86_64.rpm
you can install unixODBC manually,like this:
# cd /usr/local/src
# wget http://www.unixodbc.org/unixODBC-2.2.11.tar.gz
# tar -xzvf unixODBC*.tar.gz
#cd unixODBC*
# ./config --prefix=/usr/local -sysconfdir=/etc --disable-gui
#make
#make install
install FreeTDS:
you can install freetds by apt-get or yum.
rpm -ivh freetds-0.64-11.el5.centos.x86_64.rpm
or install freetds manually,like this:
wget ftp://ftp.ibiblio.org/pub/Linux/ALPHA/freetds/stable/freetds-stable.tgz
tar -xzvf freetds-stable*.tgz
cd freetds-stable*
./configure —with-unixodbc=/usr/local
make
make install
configure FreeTDS:
add a section to /etc/freetds/freetds.conf or /etc/freetds.conf:
[your_db_name]
host = 192.168.1.101 (change this to the right one for you)
port = 1433
tds version = 8.0 #(might be different, check "here":http://www.freetds.org/userguide/choosingtdsprotocol.htm.) #8.0 is the minimum for some important features of SQL server
Test FreeTDS:
tsql -S your_db_name -U name -P pw
you should see and do the following to make sure all went well:
locale is "zh_CN"
locale charset is "GB2312"
1>use your_actual_db
2> go
1> select * from user (do this for a table that exists in your db)
2> go
id login
1 user1
2 user2
(make sure you get correct output)
1>quit
create db definition
edit: /etc/odbc.ini:
[your_db_name]
Driver = FreeTDS
Description = ODBC connection via FreeTDS
Trace = No
Servername = your_db_name
Database = your_actual_db
edit: /etc/odbcinst.ini:
[FreeTDS]
Description = TDS driver (Sybase/MS SQL)
Driver = /usr/lib64/libtdsodbc.so
Setup = /usr/lib64/libtdsS.so
CPTimeout =
CPReuse =
FileUsage = 1
Socket = 4096
Test unixODBC:
isql -v your_db_name username pw
You should see:
+---------------------------------------+
| Connected! |
| |
| sql-statement |
| help [tablename] |
| quit |
| |
+---------------------------------------+
SQL> select * from user
+---------------------------------------+
| id | login |
+---------------------------------------+
| 1 | user1 |
| 3 | user2 |
+---------------------------------------+
2 rows affected
2 rows returned
SQL> quit
ruby odbc:
gem install dbi
gem install dbd-odbc
Test everything:
# irb1.8 irb(main):001:0> require "dbi"
=> true
irb(main):004:0> dbh = DBI.connect('dbi:ODBC:your_db_name', 'username', 'pw')
=> #<DBI::DatabaseHandle:0xb7d28688 @trace_output=#<IO:0xb7d79064>, @trace_mode=2, @handle=#<DBI::DBD::ODBC::Database:0xb7d28480 @attr={}, @handle=#<ODBC::Database:0xb7d284a8>>> irb(main):005:0> quit
Setup rails:
database.yml
development:
adapter: sqlserver
mode: odbc
dsn: your_db_name
username: USERNAME
password: PASSWORD
Last:
gem install activerecord-odbc-adapter
Everything is ok,now test the rails:
[root@b03 ruby]# ruby script/console
Loading development environment (Rails 2.2.2)
Tue Feb 23 14:59:18 +0800 2010 [Info] [Module] Copy plugin app_frame resources to Rails.public
Tue Feb 23 14:59:18 +0800 2010 [Info] [Module] Copy plugin endless_page resources to Rails.public
Tue Feb 23 14:59:18 +0800 2010 [Info] [Module] Copy plugin sfp_skin resources to Rails.public
>> ActiveRecord::Base.connection.execute('select * from message')
=> #<ODBC::Statement:0x7fce543a6360>
>>
参考：http://oldwiki.rubyonrails.org/rails/pages/HowtoConnectToMicrosoftSQLServerFromRailsOnLinux/versions/140