我在MyModel中有一个序列化哈希,如下所示:
class MyModel < ActiveRecord::Base
serialize :times, Hash
end
我能够写入和读取序列化哈希,如下所示:
# write
my_model.times[:weekday] = "foo"
# read
bar = my_model.times[:weekend]
但我遇到times[:weekday]
周围的语法错误,同时尝试这样的事情:
MyModel.where("foo = ? AND times[:weekday] IS NOT NULL", baz)
我在这里缺少什么?
答案 0 :(得分:0)
怎么样:
MyModel.where("foo = ?", baz).select { |m| m.weekday.present? }