class UserBadge < ActiveRecord::Base belongs_to :badge belongs_to :user belongs_to :granted_by, class_name: 'User' belongs_to :notification, dependent: :destroy belongs_to :post validates :badge_id, presence: true, uniqueness: {scope: :user_id}, if: 'badge.single_grant?' validates :user_id, presence: true validates :granted_at, presence: true validates :granted_by, presence: true after_create do Badge.increment_counter 'grant_count', self.badge_id end after_destroy do Badge.decrement_counter 'grant_count', self.badge_id end # Make sure we don't have duplicate badges. def self.ensure_consistency! dup_ids = [] # Single grant badges shouldn't have duplicates at all. dup_ids += exec_sql("SELECT u1.id FROM user_badges u1, user_badges u2, badges WHERE u1.badge_id = badges.id AND u1.user_id = u2.user_id AND u1.badge_id = u2.badge_id AND (NOT badges.multiple_grant) AND u1.granted_at > u2.granted_at").to_a # Multiple grant badges can have duplicates but not with the same post_ids. dup_ids += exec_sql("SELECT u1.id FROM user_badges u1, user_badges u2, badges WHERE u1.badge_id = badges.id AND u1.user_id = u2.user_id AND u1.badge_id = u2.badge_id AND badges.multiple_grant AND u1.post_id = u2.post_id AND u1.granted_at > u2.granted_at").to_a dup_ids = dup_ids.map {|x| x["id"].to_i } UserBadge.where(id: dup_ids).destroy_all end end # == Schema Information # # Table name: user_badges # # id :integer not null, primary key # badge_id :integer not null # user_id :integer not null # granted_at :datetime not null # granted_by_id :integer not null # post_id :integer # notification_id :integer # # Indexes # # index_user_badges_on_badge_id_and_user_id (badge_id,user_id) # index_user_badges_on_user_id (user_id) #