src/api/app/models/status_history.rb
class StatusHistory < ApplicationRecord
def self.history_by_key_and_hours(key, hours = 24)
starttime = Time.now.to_i - (hours.to_i * 3600)
where('time >= ? AND `key` = ?', starttime, key)
.pluck(:time, :value)
.collect! { |time, value| [time.to_i, value.to_f] }
end
end
# == Schema Information
#
# Table name: status_histories
#
# id :integer not null, primary key
# key :string(255) indexed, indexed => [time]
# time :integer indexed => [key]
# value :float(24) not null
#
# Indexes
#
# index_status_histories_on_key (key)
# index_status_histories_on_time_and_key (time,key)
#