我有一个带有数组对象的散列:
{
false=>[#<Campaign id: 1, name: "campaign 1", active: false>, #<Campaign id: 3, name: "campaign 3", active: false>, #<Campaign id: 4, name: "campaign 4", active: false>],
true=>[#<Campaign id: 2, name: "campaign 2", active: true>]
}
如何将上面的hash转化为hash
{
false=>[{id:1, name:"campaign 1"}, {id:3, name: "capaign 3"}, ....],
true =>[{id:2, name:"campaign 2"}]
}
最佳答案
hash.each {|k,v| hash[k] = v.map{|e| {id: e[:id], name: e[:name]}}}
如果您可以使用select_all 方法获取散列数组，而不是对象数组，那么您就不需要将对象转换为散列。
ModelName.connection.select_all("select id, name from <table_name>;")
=> [{id:xxx, name: xxx}.......]
关于ruby-on-rails - 如何在 Rails 中将数组对象转换为散列，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/33362994/