“Rails 3, mysql and UTF-8”

rails, Uncategorized

So, have you started to work with rails 3? Did you realize that your UTF-8 databases doesn’t work nice with mysql? This is because the mysql gem works with ASCII-8BIT encoding, but ruby 1.9 and rails 3 works with UTF-8 encoding, so when you create a model into the database, everything works fine, but when you work with those models, it doesn’t works so nice and you don’t get what you stored.

What’s the solution? Well, there are actually three solutions, the most recommended, use mysql2, in order to do this, edit your Gemfile and include:

gem "mysql2"

and then, edit your databases.yml file, and change the adapter to mysql2

  adapter: mysql2
  database: fun_development
  user: root
  encoding: utf8

Another solution, is just instead of using the “mysql” gem, use the “ruby-mysql” gem, but it’s pretty slow because it’s a 100% ruby gem.
view plaincopy to clipboardprint?

gem "ruby-mysql"

The last solution is a monkey patch, but its also slow to use it, so I really recommend using the mysql 2 gem view plaincopy to clipboardprint?

require 'mysql'
class Mysql::Result
  def encode(value, encoding = "utf-8")
    String === value ? value.force_encoding(encoding) : value

  def each_utf8(&block)
    each_orig do |row|
      yield row.map {|col| encode(col) }
  alias each_orig each
  alias each each_utf8

  def each_hash_utf8(&block)
    each_hash_orig do |row|
      row.each {|k, v| row[k] = encode(v) }
  alias each_hash_orig each_hash
  alias each_hash each_hash_utf8

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