require "migrate"
-class RemoveSegments < ActiveRecord::Migration
+class RemoveSegments < ActiveRecord::Migration[4.2]
def self.up
have_segs = select_value("SELECT count(*) FROM current_segments").to_i.nonzero?
cmd = "db/migrate/008_remove_segments_helper"
src = "#{cmd}.cc"
if !File.exist?(cmd) || File.mtime(cmd) < File.mtime(src)
- system("c++ -O3 -Wall `mysql_config --cflags --libs` " +
+ system("c++ -O3 -Wall `mysql_config --cflags --libs` " \
"#{src} -o #{cmd}") || raise
end
- conn_opts = ActiveRecord::Base.connection
- .instance_eval { @connection_options }
+ conn_opts = ApplicationRecord.connection
+ .instance_eval { @connection_options }
args = conn_opts.map(&:to_s) + [prefix]
raise "#{cmd} failed" unless system cmd, *args