mysql - Ruby TinyInt（1）？

Question

我有一个用状态标志（它是 tinyint(1)）定义的 mysql 表。但是，当我尝试检查该值是真还是假时，我似乎得出了错误的结果。也就是说，它不会将该值视为合法的真值或值，而是测试它是否不是“nil”或类似的 - 因此我的“似乎不起作用”

results.each_hash do |row|
 # What I tried

 # (a)
 if row['status'] 
    # do something - doesn't seem to work
 end

 # (b)
 if row['status'].to_i == 1
    # this seems correct
 end

 # (c)
 if row['status'] == false
   # doesn't seem to work
 end
end

检查这个值的正确方法是什么（tinyint（1）），因为它应该是 Ruby 中的 TrueClass 或 FalseClass；但是（c）本身不起作用。

这是我使用的参考 - 我假设这应该适用于 rails 和 ruby​​ 本身（除非 ActiveRecord 完成工作） - http://www.orthogonalthought.com/blog/index.php/2007/06/mysql-和-ruby-on-rails-datatypes/

Answer 1

从active_record-3.2.13，abstract_mysql_adapter.rb代码行 96：

  # By default, the MysqlAdapter will consider all columns of type <tt>tinyint(1)</tt>
  # as boolean. If you wish to disable this emulation (which was the default
  # behavior in versions 0.13.1 and earlier) you can add the following line
  # to your application.rb file:
  #
  #   ActiveRecord::ConnectionAdapters::Mysql[2]Adapter.emulate_booleans = false