The Bacon Bear Blog: OSX, SQLite3, and Rails

OSX, SQLite3, and Rails

Bacon Bear — Wed, 06 Dec 2006 00:50:00 -0800

While preparing my travel laptop for rails work, I decided to give SQLite a try. I figured, “no problem”, rails was simple enough to setup for MySQL, certainly it would be just as easy for SQLite. I was almost right.

After setting up the database.yml file to use sqlite3 instead of mysql, I started seeing this problem:

SQLite3::SQLException: near “ADD”: syntax error: ALTER TABLE blah blah blah

After some googling, I found this post at another blog site. Basically it suggests ensuring you have the latest sqlite3 installed and the latest sqlite3-ruby gem. After some port magic and a quick gem update, I was totally up to date.

But I STILL had the same problem! Where did I go wrong? I reread Mark Cornick’s post and noticed this little note at the bottom

BTW, hopefully everyone knows this by now, but sqlite3-ruby won’t even link against your libsqlite3 unless SWIG is installed. Without SWIG, you get an incredibly strange sqlite3-ruby that stopped living and became a crazy mixed-up zombie

SWIG? I had never heard of SWIG before. Well, I found it here. SWIG basically generates code that connects various high level languages (such as Ruby) to C/C++ libraries. I’m assuming this is how ruby creates it’s bindings to sqlite3.

Once I had SWIG installed, I did a quick uninstall and reinstall of sqlite3-ruby and I was in business, migrations and all.

For more info on installing SQLite for use with rails, check out this how to wiki page off the main rails wiki.

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"OSX, SQLite3, and Rails" by rssnewsdigest

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"OSX, SQLite3, and Rails" by Franz

Fri, 21 Mar 2008 10:19:48 -0700

Thanks for the tip! it's a pitty that you don't post anymore, you are really gifted...

"OSX, SQLite3, and Rails" by mmorpg

Wed, 05 Mar 2008 13:36:35 -0800

I'm glad you decided to give SQLite a try. It can be difficult to master but it's very powerful

"OSX, SQLite3, and Rails" by Rick

Tue, 09 Oct 2007 13:43:53 -0700

I uninstalled the sqlite3-ruby gem (1.2.1) and hunted down and renamed all sqlite3 files on my Mac (sqlite3, /usr/lib/sqlite3, libsqlite3*.dylib, sqlite3.h). Then I downloaded sqlite3 3.3.17 from source and built it --with-prefix=/usr/local. Finally, I reinstalled the sqlite3-ruby gem. This made migrations work again. Didn't need SWIG.

"OSX, SQLite3, and Rails" by Rick

Tue, 09 Oct 2007 13:43:44 -0700

"OSX, SQLite3, and Rails" by m.zecko@gmail.com

Thu, 08 Feb 2007 14:18:20 -0800

strange, the swig dependency should be removed allready, according to http://weblog.jamisbuck.org/2007/1/13/sqlite3-ruby-1-2-0 which version did you use?

"OSX, SQLite3, and Rails" by z3cko

Thu, 08 Feb 2007 14:17:52 -0800

strange, the swig dependency should be removed allready, according to http://weblog.jamisbuck.org/2007/1/13/sqlite3-ruby-1-2-0 which version did you use?