discourse/db/migrate/20171113214725_add_time_rea...

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# frozen_string_literal: true
class AddTimeReadToUserVisits < ActiveRecord::Migration[5.1]
def up
add_column :user_visits, :time_read, :integer, null: false, default: 0 # in seconds
add_index :user_visits, [:user_id, :visited_at, :time_read]
end
def down
remove_index :user_visits, [:user_id, :visited_at, :time_read]
remove_column :user_visits, :time_read
end
end