ActiveRecord测试大于/小于哈希条件

Question

问题:如果连接表的属性大于/小于某个值,是否可以在散列条件下进行测试

示例:测试actor年龄是否大于ageVariable:

• 是否有可能写代替的排列情况:

  ageVariable = 36<br> Movie.includes(:actors).where("actors.age > ?", ageVariable)
  

• 该HASH条件是这样的:

  ageVariable = 36
  Movie.includes(:actors).where(:actors => { :age => COMPARE_LOGIC })
  # Where COMPARE_LOGIC is something like: (:age > ageVariable)
  

Answer 1

http://guides.rubyonrails.org/active_record_querying.html#hash-conditions

使用哈希条件只能进行相等,范围和子集检查.