Forked from amuntasim/change_mysql_character_set_and_collation
Created
November 15, 2016 06:55
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##Create a migration | |
### rails g migration make_unicode_friendly | |
class MakeUnicodeFriendly < ActiveRecord::Migration | |
def change | |
alter_database_and_tables_charsets "utf8", "utf8_general_ci" | |
end | |
private | |
def alter_database_and_tables_charsets charset = default_charset, collation = default_collation | |
case connection.adapter_name | |
when 'Mysql2' | |
execute "ALTER DATABASE #{connection.current_database} CHARACTER SET #{charset} COLLATE #{collation}" | |
connection.tables.each do |table| | |
execute "ALTER TABLE #{table} CONVERT TO CHARACTER SET #{charset} COLLATE #{collation}" | |
end | |
else | |
# OK, not quite irreversible but can't be done if there's not | |
# the code here to support it... | |
raise ActiveRecord::IrreversibleMigration.new("Migration error: Unsupported database for migration to UTF-8 support") | |
end | |
end | |
def default_charset | |
case connection.adapter_name | |
when 'Mysql2' | |
execute("show variables like 'character_set_server'").fetch_hash['Value'] | |
else | |
nil | |
end | |
end | |
def default_collation | |
case connection.adapter_name | |
when 'Mysql2' | |
execute("show variables like 'collation_server'").fetch_hash['Value'] | |
else | |
nil | |
end | |
end | |
def connection | |
ActiveRecord::Base.connection | |
end | |
end |
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