mysql2

I have recently upgraded to Rails 3 and created a new application with Rails 3.0.3, but I keep getting an error Macintosh:$ rails server => Booting WEBrick => Rails 3.0.3 application starting in development on http://0.0.0.0:3000 => Call with -d to detach => Ctrl-C to shutdown server [2010-11-28 11:32:47] INFO WEBrick 1.3.1 [2010-11-28 11:32:47] INFO ruby 1.8.7 (2010-04-19) [i686-darwin10.4.0] [2010-11-28 11:32:47] INFO WEBrick::HTTPServer#start: pid=1055 port=3000 Started GET "/" for 127.0.0.1 at Sun Nov 28 11:32:52 +0000 2010 RuntimeError (!!! Missing the mysql2 gem. Add it to your Gemfile:

When I try to run the following code in Rails using Mysql2 as database manager: rake db:migrate I obtain the following error: rake aborted! "Mysql2::Error: All parts of a PRIMARY KEY must be NOT NULL:" Why do I get this error, if the primary key in a table by default is NOT "null"? Migration code, however : class CreateUsers < ActiveRecord::Migration def change create_table :users do |t| t.string "first_name" t.timestamps end end end Bater Chen I had a same problem before, and I solved according to here https://github.com/rails/rails/pull/13247#issuecomment-32425844 With Rails 2.3.5, MySQL

Several of my colleagues and I have recently upgraded from MySQL 5.5 to MySQL 5.6 using homebrew on our Macs to test locally before upgrading our servers. Since this upgrade, we all have been experiencing intermittent MySQL errors when running our rails code: Lost connection to MySQL server at 'sending authentication information', system error: 32 We have tried re-making our usernames and passwords in our database, and upping the connection timeout, but neither have fixed the problem. The error logs do not mention the issue. The only workaround we have found when we run into the problem is to

All, I downloaded/installed 1.9.2 windows installer, and then RubyMine3.0RC, and installed it. Opening a new Rails project, with mysql selected as the DB, gives the following error when I "RUN" it. D:\ProgramFiles\Ruby192\bin\ruby.exe -e $stdout.sync=true;$stderr.sync=true;load($0=ARGV.shift) C:/Users/Rob/RubymineProjects/test1/script/rails server -p 3000 -b 127.0.0.1 -e development D:/ProgramFiles/Ruby192/lib/ruby/gems/1.9.1/gems/mysql2-0.2.6-x86-mingw32/lib/mysql2/mysql2.rb:2:in `require': 126: The specified module could not be found. - D:/ProgramFiles/Ruby192/lib/ruby/gems/1.9.1/gems/mysql2

I am trying to run a Rails two app with Ubuntu 10.04 server, sphinx, myql2 version 0.2.7 and percona server 5.5 (Myslql 5.5). mysql2 in irb works ok, I can connect to the db. this rails 2 app is working in another Centos server with MySql 5.1. When I run: script/server -e production I get: mysql2.so: libmysqlclient_r.so.15: cannot open shared object file: No such file or directory here are the libs I have: # ls -l /usr/lib |grep sql -rw-r--r-- 1 root root 10581008 2011-11-18 16:51 libmysqlclient.a lrwxrwxrwx 1 root root 16 2011-12-10 05:48 libmysqlclient_r.a -> libmysqlclient.a lrwxrwxrwx 1