class Site < ActiveRecord::Base
    belongs_to :group
    belongs_to :status_sensor
    has_many :site_options
    has_many :status_changes

def total_wet_time
        @site = site.find(params[:id])
        wet_time = 0
        for item in @site.status_changes |item|
            if KeyWord.get_in_wet_list(item.before) # checks is status==wet
                wet_time += item.duration # in seconds
            end
        end
        if KeyWord.get_in_wet_list(@site.sensor.last_value)
            wet_time += time_since(@site.sensor.last_page)
        end
end