discourse/app/models/user_badge.rb

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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
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validates :badge_id, presence: true, uniqueness: {scope: :user_id}, if: 'badge.single_grant?'
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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
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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
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#
# Indexes
#
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# index_user_badges_on_badge_id_and_user_id (badge_id,user_id)
# index_user_badges_on_badge_id_and_user_id_and_post_id (badge_id,user_id,post_id) UNIQUE
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#