Mindtonic » mysql

Installing MySQL Gem after Installing MySQL From MacPorts

mindtonic — Tue, 25 May 2010 20:25:54 +0000

MacPorts is a fantastic resource for installing and managing libraries on OSX. When working with Ruby on Rails, I installed MySQL (and Postgresql) using MacPorts, but had trouble getting the MySQL gem to install and connect. The error message I received was:

Error: uninitialized constant MysqlCompat::MysqlRes

Here is the magic formula:
sudo gem install -v 2.7 --no-rdoc --no-ri mysql -- --with-mysql-dir=/opt/local/lib/mysql5 --with-mysql-config=/opt/local/lib/mysql5/bin/mysql_config;

Source: http://www.ruby-forum.com/topic/192550

Convert MySql Datetime to Javascript Date Object

mindtonic — Thu, 13 Aug 2009 19:04:47 +0000

  function mysqlTimeStampToDate(timestamp) {
    //function parses mysql datetime string and returns javascript Date object
    //input has to be in this format: 2007-06-05 15:26:02
    var regex=/^([0-9]{2,4})-([0-1][0-9])-([0-3][0-9]) (?:([0-2][0-9]):([0-5][0-9]):([0-5][0-9]))?$/;
    var parts=timestamp.replace(regex,"$1 $2 $3 $4 $5 $6").split(' ');
    return new Date(parts[0],parts[1]-1,parts[2],parts[3],parts[4],parts[5]);
  }

Source: http://snippets.dzone.com/posts/show/4132

Ultrasphinx MySql Location Error

mindtonic — Wed, 24 Jun 2009 18:44:00 +0000

After installing all of the necessary elements for Spinx and Ultrasphinx, I began following the instructions from Snax Fauna to get the system up and running.

rake ultrasphinx:configure

worked fine, but I encountered the following error upon attempting to index my models:

rake ultrasphinx:index ... dyld: Library not loaded: /usr/local/mysql/lib/mysql/libmysqlclient.15.dylib Referenced from: /usr/local/bin/indexer Reason: image not found

In my configuration for development, I use the MAMP MySql server. The rake configure command correctly pulled all of the connection information from database.yml, so that was not the problem.

I searched around and finally encountered this solution from Michael Hartl:

$ sudo ln -s /usr/local/mysql/lib /usr/local/mysql/lib/mysql

It worked brilliantly. Thanks Michael.