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# frozen_string_literal: true
require_dependency 'enum'
class Group < ActiveRecord::Base
include HasCustomFields
include AnonCacheInvalidator
include HasDestroyedWebHook
cattr_accessor :preloaded_custom_field_names
self.preloaded_custom_field_names = Set.new
has_many :category_groups, dependent: :destroy
has_many :group_users, dependent: :destroy
has_many :group_requests, dependent: :destroy
has_many :group_mentions, dependent: :destroy
has_many :group_archived_messages, dependent: :destroy
has_many :categories, through: :category_groups
has_many :users, through: :group_users
has_many :requesters, through: :group_requests, source: :user
has_many :group_histories, dependent: :destroy
has_many :category_reviews, class_name: 'Category', foreign_key: :reviewable_by_group_id, dependent: :nullify
has_many :reviewables, foreign_key: :reviewable_by_group_id, dependent: :nullify
has_and_belongs_to_many :web_hooks
before_save :downcase_incoming_email
before_save :cook_bio
after_save :destroy_deletions
after_save :update_primary_group
after_save :update_title
after_save :enqueue_update_mentions_job,
if: Proc.new { |g| g.name_before_last_save && g.saved_change_to_name? }
after_save :expire_cache
after_destroy :expire_cache
after_commit :automatic_group_membership, on: [:create, :update]
after_commit :trigger_group_created_event, on: :create
after_commit :trigger_group_updated_event, on: :update
after_commit :trigger_group_destroyed_event, on: :destroy
def expire_cache
ApplicationSerializer.expire_cache_fragment!("group_names")
SvgSprite.expire_cache
end
def remove_review_groups
puts self.id!
Category.where(review_group_id: self.id).update_all(review_group_id: nil)
Category.where(review_group_id: self.id).update_all(review_group_id: nil)
end
validate :name_format_validator
validates :name, presence: true
validate :automatic_membership_email_domains_format_validator
validate :incoming_email_validator
validate :can_allow_membership_requests, if: :allow_membership_requests
validates :flair_url, url: true, if: Proc.new { |g| g.flair_url && g.flair_url.exclude?('fa-') }
validate :validate_grant_trust_level, if: :will_save_change_to_grant_trust_level?
AUTO_GROUPS = {
everyone: 0,
admins: 1,
moderators: 2,
staff: 3,
trust_level_0: 10,
trust_level_1: 11,
trust_level_2: 12,
trust_level_3: 13,
trust_level_4: 14
}
AUTO_GROUP_IDS = Hash[*AUTO_GROUPS.to_a.flatten.reverse]
STAFF_GROUPS = [:admins, :moderators, :staff]
ALIAS_LEVELS = {
nobody: 0,
only_admins: 1,
mods_and_admins: 2,
members_mods_and_admins: 3,
owners_mods_and_admins: 4,
everyone: 99
}
def self.visibility_levels
@visibility_levels = Enum.new(
public: 0,
logged_on_users: 1,
members: 2,
staff: 3,
owners: 4
)
end
validates :mentionable_level, inclusion: { in: ALIAS_LEVELS.values }
validates :messageable_level, inclusion: { in: ALIAS_LEVELS.values }
scope :visible_groups, Proc.new { |user, order, opts|
groups = self.order(order || "name ASC")
if !opts || !opts[:include_everyone]
groups = groups.where("groups.id > 0")
end
unless user&.admin
sql = <<~SQL
groups.id IN (
SELECT g.id FROM groups g WHERE g.visibility_level = :public
UNION ALL
SELECT g.id FROM groups g
WHERE g.visibility_level = :logged_on_users AND :user_id IS NOT NULL
UNION ALL
SELECT g.id FROM groups g
JOIN group_users gu ON gu.group_id = g.id AND
gu.user_id = :user_id
WHERE g.visibility_level = :members
UNION ALL
SELECT g.id FROM groups g
LEFT JOIN group_users gu ON gu.group_id = g.id AND
gu.user_id = :user_id AND
gu.owner
WHERE g.visibility_level = :staff AND (gu.id IS NOT NULL OR :is_staff)
UNION ALL
SELECT g.id FROM groups g
JOIN group_users gu ON gu.group_id = g.id AND
gu.user_id = :user_id AND
gu.owner
WHERE g.visibility_level = :owners
)
SQL
groups = groups.where(
sql,
Group.visibility_levels.to_h.merge(user_id: user&.id, is_staff: !!user&.staff?)
)
end
groups
}
scope :members_visible_groups, Proc.new { |user, order, opts|
groups = self.order(order || "name ASC")
if !opts || !opts[:include_everyone]
groups = groups.where("groups.id > 0")
end
unless user&.admin
sql = <<~SQL
groups.id IN (
SELECT g.id FROM groups g WHERE g.members_visibility_level = :public
UNION ALL
SELECT g.id FROM groups g
WHERE g.members_visibility_level = :logged_on_users AND :user_id IS NOT NULL
UNION ALL
SELECT g.id FROM groups g
JOIN group_users gu ON gu.group_id = g.id AND
gu.user_id = :user_id
WHERE g.members_visibility_level = :members
UNION ALL
SELECT g.id FROM groups g
LEFT JOIN group_users gu ON gu.group_id = g.id AND
gu.user_id = :user_id AND
gu.owner
WHERE g.members_visibility_level = :staff AND (gu.id IS NOT NULL OR :is_staff)
UNION ALL
SELECT g.id FROM groups g
JOIN group_users gu ON gu.group_id = g.id AND
gu.user_id = :user_id AND
gu.owner
WHERE g.members_visibility_level = :owners
)
SQL
groups = groups.where(
sql,
Group.visibility_levels.to_h.merge(user_id: user&.id, is_staff: !!user&.staff?)
)
end
groups
}
scope :mentionable, lambda { |user|
where(self.mentionable_sql_clause,
levels: alias_levels(user),
user_id: user&.id
)
}
scope :messageable, lambda { |user|
where("messageable_level in (:levels) OR
(
messageable_level = #{ALIAS_LEVELS[:members_mods_and_admins]} AND id in (
SELECT group_id FROM group_users WHERE user_id = :user_id)
) OR (
messageable_level = #{ALIAS_LEVELS[:owners_mods_and_admins]} AND id in (
SELECT group_id FROM group_users WHERE user_id = :user_id AND owner IS TRUE)
)", levels: alias_levels(user), user_id: user && user.id)
}
def self.mentionable_sql_clause
<<~SQL
mentionable_level in (:levels)
OR (
mentionable_level = #{ALIAS_LEVELS[:members_mods_and_admins]}
AND id in (
SELECT group_id FROM group_users WHERE user_id = :user_id)
) OR (
mentionable_level = #{ALIAS_LEVELS[:owners_mods_and_admins]}
AND id in (
SELECT group_id FROM group_users WHERE user_id = :user_id AND owner IS TRUE)
)
SQL
end
def self.alias_levels(user)
levels = [ALIAS_LEVELS[:everyone]]
if user && user.admin?
levels = [ALIAS_LEVELS[:everyone],
ALIAS_LEVELS[:only_admins],
ALIAS_LEVELS[:mods_and_admins],
ALIAS_LEVELS[:members_mods_and_admins],
ALIAS_LEVELS[:owners_mods_and_admins]]
elsif user && user.moderator?
levels = [ALIAS_LEVELS[:everyone],
ALIAS_LEVELS[:mods_and_admins],
ALIAS_LEVELS[:members_mods_and_admins],
ALIAS_LEVELS[:owners_mods_and_admins]]
end
levels
end
def self.plugin_editable_group_custom_fields
@plugin_editable_group_custom_fields ||= {}
end
def self.register_plugin_editable_group_custom_field(custom_field_name, plugin)
plugin_editable_group_custom_fields[custom_field_name] = plugin
end
def self.editable_group_custom_fields
plugin_editable_group_custom_fields.reduce([]) do |fields, (k, v)|
next(fields) unless v.enabled?
fields << k
end.uniq
end
def downcase_incoming_email
self.incoming_email = (incoming_email || "").strip.downcase.presence
end
def cook_bio
if self.bio_raw.present?
self.bio_cooked = PrettyText.cook(self.bio_raw)
else
self.bio_cooked = nil
end
end
def incoming_email_validator
return if self.automatic || self.incoming_email.blank?
incoming_email.split("|").each do |email|
escaped = Rack::Utils.escape_html(email)
if !Email.is_valid?(email)
self.errors.add(:base, I18n.t('groups.errors.invalid_incoming_email', email: escaped))
elsif group = Group.where.not(id: self.id).find_by_email(email)
self.errors.add(:base, I18n.t('groups.errors.email_already_used_in_group', email: escaped, group_name: Rack::Utils.escape_html(group.name)))
elsif category = Category.find_by_email(email)
self.errors.add(:base, I18n.t('groups.errors.email_already_used_in_category', email: escaped, category_name: Rack::Utils.escape_html(category.name)))
end
end
end
def posts_for(guardian, opts = nil)
opts ||= {}
result = Post.joins(:topic, user: :groups, topic: :category)
.preload(:topic, user: :groups, topic: :category)
.references(:posts, :topics, :category)
.where(groups: { id: id })
.where('topics.archetype <> ?', Archetype.private_message)
.where('topics.visible')
.where(post_type: Post.types[:regular])
if opts[:category_id].present?
result = result.where('topics.category_id = ?', opts[:category_id].to_i)
end
result = guardian.filter_allowed_categories(result)
result = result.where('posts.id < ?', opts[:before_post_id].to_i) if opts[:before_post_id]
result.order('posts.created_at desc')
end
def messages_for(guardian, opts = nil)
opts ||= {}
result = Post.includes(:user, :topic, topic: :category)
.references(:posts, :topics, :category)
.where('topics.archetype = ?', Archetype.private_message)
.where(post_type: Post.types[:regular])
.where('topics.id IN (SELECT topic_id FROM topic_allowed_groups WHERE group_id = ?)', self.id)
if opts[:category_id].present?
result = result.where('topics.category_id = ?', opts[:category_id].to_i)
end
result = guardian.filter_allowed_categories(result)
result = result.where('posts.id < ?', opts[:before_post_id].to_i) if opts[:before_post_id]
result.order('posts.created_at desc')
end
def mentioned_posts_for(guardian, opts = nil)
opts ||= {}
result = Post.joins(:group_mentions)
.includes(:user, :topic, topic: :category)
.references(:posts, :topics, :category)
.where('topics.archetype <> ?', Archetype.private_message)
.where(post_type: Post.types[:regular])
.where('group_mentions.group_id = ?', self.id)
if opts[:category_id].present?
result = result.where('topics.category_id = ?', opts[:category_id].to_i)
end
result = guardian.filter_allowed_categories(result)
result = result.where('posts.id < ?', opts[:before_post_id].to_i) if opts[:before_post_id]
result.order('posts.created_at desc')
end
def self.trust_group_ids
(10..19).to_a
end
def set_message_default_notification_levels!(topic, ignore_existing: false)
group_users.pluck(:user_id, :notification_level).each do |user_id, notification_level|
next if user_id == -1
next if user_id == topic.user_id
next if ignore_existing && TopicUser.where(user_id: user_id, topic_id: topic.id).exists?
action =
case notification_level
when TopicUser.notification_levels[:tracking] then "track!"
when TopicUser.notification_levels[:regular] then "regular!"
when TopicUser.notification_levels[:muted] then "mute!"
when TopicUser.notification_levels[:watching] then "watch!"
else "track!"
end
topic.notifier.public_send(action, user_id)
end
end
def self.refresh_automatic_group!(name)
return unless id = AUTO_GROUPS[name]
unless group = self.lookup_group(name)
group = Group.new(name: name.to_s, automatic: true)
if AUTO_GROUPS[:moderators] == id
group.default_notification_level = 2
group.messageable_level = ALIAS_LEVELS[:everyone]
end
group.id = id
group.save!
end
# don't allow shoddy localization to break this
localized_name = User.normalize_username(I18n.t("groups.default_names.#{name}", locale: SiteSetting.default_locale))
validator = UsernameValidator.new(localized_name)
if validator.valid_format? && !User.username_exists?(localized_name)
group.name = localized_name
end
# the everyone group is special, it can include non-users so there is no
# way to have the membership in a table
case name
when :everyone
group.visibility_level = Group.visibility_levels[:staff]
group.save!
return group
when :moderators
group.update!(messageable_level: ALIAS_LEVELS[:everyone])
end
group.update!(visibility_level: Group.visibility_levels[:logged_on_users]) if group.visibility_level == Group.visibility_levels[:public]
# Remove people from groups they don't belong in.
remove_subquery =
case name
when :admins
"SELECT id FROM users WHERE id <= 0 OR NOT admin OR staged"
when :moderators
"SELECT id FROM users WHERE id <= 0 OR NOT moderator OR staged"
when :staff
"SELECT id FROM users WHERE id <= 0 OR (NOT admin AND NOT moderator) OR staged"
when :trust_level_0, :trust_level_1, :trust_level_2, :trust_level_3, :trust_level_4
"SELECT id FROM users WHERE id <= 0 OR trust_level < #{id - 10} OR staged"
end
DB.exec <<-SQL
DELETE FROM group_users
USING (#{remove_subquery}) X
WHERE group_id = #{group.id}
AND user_id = X.id
SQL
# Add people to groups
insert_subquery =
case name
when :admins
"SELECT id FROM users WHERE id > 0 AND admin AND NOT staged"
when :moderators
"SELECT id FROM users WHERE id > 0 AND moderator AND NOT staged"
when :staff
"SELECT id FROM users WHERE id > 0 AND (moderator OR admin) AND NOT staged"
when :trust_level_1, :trust_level_2, :trust_level_3, :trust_level_4
"SELECT id FROM users WHERE id > 0 AND trust_level >= #{id - 10} AND NOT staged"
when :trust_level_0
"SELECT id FROM users WHERE id > 0 AND NOT staged"
end
DB.exec <<-SQL
INSERT INTO group_users (group_id, user_id, created_at, updated_at)
SELECT #{group.id}, X.id, now(), now()
FROM group_users
RIGHT JOIN (#{insert_subquery}) X ON X.id = user_id AND group_id = #{group.id}
WHERE user_id IS NULL
SQL
group.save!
# we want to ensure consistency
Group.reset_counters(group.id, :group_users)
group
end
def self.ensure_consistency!
reset_all_counters!
refresh_automatic_groups!
refresh_has_messages!
end
def self.reset_all_counters!
DB.exec <<-SQL
WITH X AS (
SELECT group_id
, COUNT(user_id) users
FROM group_users
GROUP BY group_id
)
UPDATE groups
SET user_count = X.users
FROM X
WHERE id = X.group_id
AND user_count <> X.users
SQL
end
def self.refresh_automatic_groups!(*args)
args = AUTO_GROUPS.keys if args.empty?
args.each { |group| refresh_automatic_group!(group) }
end
def self.refresh_has_messages!
DB.exec <<-SQL
UPDATE groups g SET has_messages = false
WHERE NOT EXISTS (SELECT tg.id
FROM topic_allowed_groups tg
INNER JOIN topics t ON t.id = tg.topic_id
WHERE tg.group_id = g.id
AND t.deleted_at IS NULL)
AND g.has_messages = true
SQL
end
def self.ensure_automatic_groups!
AUTO_GROUPS.each_key do |name|
refresh_automatic_group!(name) unless lookup_group(name)
end
end
def self.[](name)
lookup_group(name) || refresh_automatic_group!(name)
end
def self.search_groups(name, groups: nil)
(groups || Group).where(
"name ILIKE :term_like OR full_name ILIKE :term_like", term_like: "%#{name}%"
)
end
def self.lookup_group(name)
if id = AUTO_GROUPS[name]
Group.find_by(id: id)
else
unless group = Group.find_by(name: name)
raise ArgumentError, "unknown group"
end
group
end
end
def self.lookup_groups(group_ids: [], group_names: [])
if group_ids.present?
group_ids = group_ids.split(",")
group_ids.map!(&:to_i)
groups = Group.where(id: group_ids) if group_ids.present?
end
if group_names.present?
group_names = group_names.split(",")
groups = (groups || Group).where(name: group_names) if group_names.present?
end
groups || []
end
def self.desired_trust_level_groups(trust_level)
trust_group_ids.keep_if do |id|
id == AUTO_GROUPS[:trust_level_0] || (trust_level + 10) >= id
end
end
def self.user_trust_level_change!(user_id, trust_level)
desired = desired_trust_level_groups(trust_level)
undesired = trust_group_ids - desired
GroupUser.where(group_id: undesired, user_id: user_id).delete_all
desired.each do |id|
if group = find_by(id: id)
unless GroupUser.where(group_id: id, user_id: user_id).exists?
group.group_users.create!(user_id: user_id)
end
else
name = AUTO_GROUP_IDS[trust_level]
refresh_automatic_group!(name)
end
end
end
# given something that might be a group name, id, or record, return the group id
def self.group_id_from_param(group_param)
return group_param.id if group_param.is_a?(Group)
return group_param if group_param.is_a?(Integer)
# subtle, using Group[] ensures the group exists in the DB
Group[group_param.to_sym].id
end
def self.builtin
Enum.new(:moderators, :admins, :trust_level_1, :trust_level_2)
end
def usernames=(val)
current = usernames.split(",")
expected = val.split(",")
additions = expected - current
deletions = current - expected
map = Hash[*User.where(username: additions + deletions)
.select('id,username')
.map { |u| [u.username, u.id] }.flatten]
deletions = Set.new(deletions.map { |d| map[d] })
@deletions = []
group_users.each do |gu|
@deletions << gu if deletions.include?(gu.user_id)
end
additions.each do |a|
group_users.build(user_id: map[a])
end
end
def usernames
users.pluck(:username).join(",")
end
PUBLISH_CATEGORIES_LIMIT = 10
def add(user, notify: false, automatic: false)
self.users.push(user) unless self.users.include?(user)
if notify
Notification.create!(
notification_type: Notification.types[:membership_request_accepted],
user_id: user.id,
data: {
group_id: id,
group_name: name
}.to_json
)
end
if self.categories.count < PUBLISH_CATEGORIES_LIMIT
MessageBus.publish('/categories', {
categories: ActiveModel::ArraySerializer.new(self.categories).as_json
}, user_ids: [user.id])
else
Discourse.request_refresh!(user_ids: [user.id])
end
DiscourseEvent.trigger(:user_added_to_group, user, self, automatic: automatic)
self
end
def remove(user)
self.group_users.where(user: user).each(&:destroy)
user.update_columns(primary_group_id: nil) if user.primary_group_id == self.id
DiscourseEvent.trigger(:user_removed_from_group, user, self)
end
def add_owner(user)
if group_user = self.group_users.find_by(user: user)
group_user.update!(owner: true) if !group_user.owner
else
self.group_users.create!(user: user, owner: true)
end
end
def self.find_by_email(email)
self.where("string_to_array(incoming_email, '|') @> ARRAY[?]", Email.downcase(email)).first
end
def bulk_add(user_ids)
return unless user_ids.present?
Group.transaction do
sql = <<~SQL
INSERT INTO group_users
(group_id, user_id, created_at, updated_at)
SELECT
#{self.id},
u.id,
CURRENT_TIMESTAMP,
CURRENT_TIMESTAMP
FROM users AS u
WHERE u.id IN (:user_ids)
AND NOT EXISTS (
SELECT 1 FROM group_users AS gu
WHERE gu.user_id = u.id AND
gu.group_id = :group_id
)
SQL
DB.exec(sql, group_id: self.id, user_ids: user_ids)
user_attributes = {}
if self.primary_group?
user_attributes[:primary_group_id] = self.id
end
if self.title.present?
user_attributes[:title] = self.title
end
if user_attributes.present?
User.where(id: user_ids).update_all(user_attributes)
end
# update group user count
DB.exec <<~SQL
UPDATE groups g
SET user_count =
(SELECT COUNT(gu.user_id)
FROM group_users gu
WHERE gu.group_id = g.id)
WHERE g.id = #{self.id};
SQL
end
if self.grant_trust_level.present?
Jobs.enqueue(:bulk_grant_trust_level,
user_ids: user_ids,
trust_level: self.grant_trust_level
)
end
self
end
def staff?
STAFF_GROUPS.include?(self.name.to_sym)
end
def self.member_of(groups, user)
groups.joins(
"LEFT JOIN group_users gu ON gu.group_id = groups.id
").where("gu.user_id = ?", user.id)
end
def self.owner_of(groups, user)
self.member_of(groups, user).where("gu.owner")
end
%i{
group_created
group_updated
group_destroyed
}.each do |event|
define_method("trigger_#{event}_event") do
DiscourseEvent.trigger(event, self)
true
end
end
protected
def name_format_validator
return if !name_changed?
# avoid strip! here, it works now
# but may not continue to work long term, especially
# once we start returning frozen strings
if self.name != (stripped = self.name.unicode_normalize.strip)
self.name = stripped
end
UsernameValidator.perform_validation(self, 'name') || begin
normalized_name = User.normalize_username(self.name)
if self.will_save_change_to_name? && User.normalize_username(self.name_was) != normalized_name && User.username_exists?(self.name)
errors.add(:name, I18n.t("activerecord.errors.messages.taken"))
end
end
end
def automatic_membership_email_domains_format_validator
return if self.automatic_membership_email_domains.blank?
domains = self.automatic_membership_email_domains.split("|")
domains.each do |domain|
domain.sub!(/^https?:\/\//, '')
domain.sub!(/\/.*$/, '')
self.errors.add :base, (I18n.t('groups.errors.invalid_domain', domain: domain)) unless domain =~ /\A[a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,24}(:[0-9]{1,5})?(\/.*)?\Z/i
end
self.automatic_membership_email_domains = domains.join("|")
end
# hack around AR
def destroy_deletions
if @deletions
@deletions.each do |gu|
gu.destroy
User.where('id = ? AND primary_group_id = ?', gu.user_id, gu.group_id).update_all 'primary_group_id = NULL'
end
end
@deletions = nil
end
def automatic_group_membership
if self.automatic_membership_retroactive
Jobs.enqueue(:automatic_group_membership, group_id: self.id)
end
end
def update_title
return if new_record? && !self.title.present?
if self.saved_change_to_title?
sql = <<~SQL
UPDATE users
SET title = :title
WHERE (title = :title_was OR title = '' OR title IS NULL)
AND COALESCE(title,'') <> COALESCE(:title,'')
AND id IN (SELECT user_id FROM group_users WHERE group_id = :id)
SQL
DB.exec(sql, title: title, title_was: title_before_last_save, id: id)
end
end
def update_primary_group
return if new_record? && !self.primary_group?
if self.saved_change_to_primary_group?
sql = <<~SQL
UPDATE users
/*set*/
/*where*/
SQL
builder = DB.build(sql)
builder.where(<<~SQL, id: id)
id IN (
SELECT user_id
FROM group_users
WHERE group_id = :id
)
SQL
if primary_group
builder.set("primary_group_id = :id")
else
builder.set("primary_group_id = NULL")
builder.where("primary_group_id = :id")
end
builder.exec
end
end
private
def validate_grant_trust_level
unless TrustLevel.valid?(self.grant_trust_level)
self.errors.add(:base, I18n.t(
'groups.errors.grant_trust_level_not_valid',
trust_level: self.grant_trust_level
))
end
end
def can_allow_membership_requests
valid = true
valid =
if self.persisted?
self.group_users.where(owner: true).exists?
else
self.group_users.any?(&:owner)
end
if !valid
self.errors.add(:base, I18n.t('groups.errors.cant_allow_membership_requests'))
end
end
def enqueue_update_mentions_job
Jobs.enqueue(:update_group_mentions,
previous_name: self.name_before_last_save,
group_id: self.id
)
end
end
# == Schema Information
#
# Table name: groups
#
# id :integer not null, primary key
# name :string not null
# created_at :datetime not null
# updated_at :datetime not null
# automatic :boolean default(FALSE), not null
# user_count :integer default(0), not null
# automatic_membership_email_domains :text
# automatic_membership_retroactive :boolean default(FALSE)
# primary_group :boolean default(FALSE), not null
# title :string
# grant_trust_level :integer
# incoming_email :string
# has_messages :boolean default(FALSE), not null
# flair_url :string
# flair_bg_color :string
# flair_color :string
# bio_raw :text
# bio_cooked :text
# allow_membership_requests :boolean default(FALSE), not null
# full_name :string
# default_notification_level :integer default(3), not null
# visibility_level :integer default(0), not null
# public_exit :boolean default(FALSE), not null
# public_admission :boolean default(FALSE), not null
# publish_read_state :boolean default(FALSE), not null
# membership_request_template :text
# messageable_level :integer default(0)
# mentionable_level :integer default(0)
# members_visibility_level :integer default(0), not null
#
# Indexes
#
# index_groups_on_incoming_email (incoming_email) UNIQUE
# index_groups_on_name (name) UNIQUE
#
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