如何找回已得到了相同的纬度和经度Rails的:从活动记录的阵列唯一地址地址
> addresses
=> [#<Address id: 10, country: "IN", state: "KA", latitude: "12.971513803339702", longitude: "77.59443104418949", user_id: 11>, #<Address id: 9, country: "IN", state: "KA", latitude: "12.971513803339702", longitude: "77.59443104418949", user_id: 10>]
在这种情况下,我需要的ActiveRecord的任何一个唯一的地址,纬度和经度具有类似值。
使用try ['group'](http://api.rubyonrails.org/classes/ActiveRecord/QueryMethods.html#method-i-group)。 – vee
addresses = Address.all.to_a 是不是可以通过拒绝那些匹配的经度和纬度的记录来获得uniq数组集合 –