[DRE-maint] Bug#678515: redmine: 500 Internal Server Error. Incompatible character encodings: ASCII-8BIT and UTF-8

[Holger Friedrich]

Hi,
we had the same problem when upgrading to ruby 1.9. Rolling back to ruby
1.8 using update-alternatives helped of course as a quick workaround
until we found out about mysql2 adapter.

Yes, mysql2 adapter is not included in Debian.

For everybody who needs a quick workaround:
1) edit /etc/redmine/default/database.yml, change adapter from mysql to
mysql2
2) install libmysqlclient-dev
3) edit /usr/share/redmine/Gemfile, uncomment the following lines
   group :mysql do
     gem "mysql2", "~> 0.2.7"
   end
(you will probably need to do this again if the redmine package is upgraded)
4) run bundle install from /usr/share/redmine

It is important to get the 0.2 version of the mysql2 gem, the 0.3 series
does not include the activerecord-mysql2-adapter we need (as it is
included in Rails 3.1).

Best,
Holger