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class MySqlChangeCharset < ActiveRecord::Migration
def change
# this isn't needed when the database was created in utf8mb4
# if /^mysql2?$/i =~ ActiveRecord::Base.connection.adapter_name
# charset = "utf8mb4"
# collation = "utf8mb4_general_ci"
# # database
# execute "ALTER DATABASE #{connection.current_database} DEFAULT CHARACTER SET #{charset} COLLATE #{collation}"
# # schema_migrations
# execute "ALTER TABLE schema_migrations CHANGE version version VARCHAR(191) CHARACTER SET #{charset} COLLATE #{collation}"
# # table
# connection.tables.each do |table|
# execute "ALTER TABLE #{table} CONVERT TO CHARACTER SET #{charset} COLLATE #{collation}"
# end
# else
# raise ActiveRecord::IrreversibleMigration.new("Migration error: Unsupported database for migration to utf8mb4 support.")
# end
end
end
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