migrate -> ridgepole移行スクリプト

gistfile1.txt

Dir::foreach('db/migrate/.') do |file|
  next if file == '.' || file == '..'
  state = 0
  table = ''
  table_name = ''
  open("db\/migrate\/#{file}") do |f|
    file_name = file.match(/.+_create_(\w+)\.rb/)[1]
    wf = open("db\/schemas\/#{file_name}\.rb", 'w')
    f.each do |line|
      if line.include?('create_table')
        state = 1
        table_name = line.match(/\s*create_table\s+:(\w+)/)[1]

      end
      # referencesをidに置換

      if line.include?('references')
        ref = ''
        if line.include?(',')
          ref = line.match(/t.references\s+:(\w+)(,.+)/)
        else
          ref = line.match(/t.references\s+:(\w+)/)
        end
        table << "      t\.integer :#{ref[1]}_id#{ref[2]}\n".sub('    ', '') if state == 1
        table << "      t\.index \[:#{ref[1]}_id\], name: 'index_#{table_name}_on_#{ref[1]}_id', using: :btree\n".sub('    ', '') if state == 1
      else
        table << line.sub('    ', '') if state == 1
      end
      if state == 1 && line.strip =='end'
        state = 0
      end
      if line.include?('foreign_key')
        ref = line.strip.match(/.+\,\s:(\w+)/)
        table << "#{line.strip}, name: '#{table_name}_on_#{ref[1]}'\n"
      elsif line.include?('add_index')
        table << line.strip
        table << "\n"
      end
    end
    wf.print table
  end
end