312 lines
8.5 KiB
Ruby
312 lines
8.5 KiB
Ruby
class Group < ActiveRecord::Base
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include HasCustomFields
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has_many :category_groups, dependent: :destroy
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has_many :group_users, dependent: :destroy
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has_many :categories, through: :category_groups
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has_many :users, through: :group_users
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after_save :destroy_deletions
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validate :name_format_validator
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validates_uniqueness_of :name
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AUTO_GROUPS = {
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:everyone => 0,
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:admins => 1,
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:moderators => 2,
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:staff => 3,
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:trust_level_0 => 10,
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:trust_level_1 => 11,
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:trust_level_2 => 12,
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:trust_level_3 => 13,
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:trust_level_4 => 14
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}
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AUTO_GROUP_IDS = Hash[*AUTO_GROUPS.to_a.flatten.reverse]
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ALIAS_LEVELS = {
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:nobody => 0,
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:only_admins => 1,
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:mods_and_admins => 2,
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:members_mods_and_admins => 3,
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:everyone => 99
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}
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validates :alias_level, inclusion: { in: ALIAS_LEVELS.values}
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def posts_for(guardian, before_post_id=nil)
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user_ids = group_users.map {|gu| gu.user_id}
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result = Post.where(user_id: user_ids).includes(:user, :topic).references(:posts, :topics)
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.where('topics.archetype <> ?', Archetype.private_message)
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.where(post_type: Post.types[:regular])
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unless guardian.is_staff?
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allowed_ids = guardian.allowed_category_ids
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if allowed_ids.length > 0
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result = result.where('topics.category_id IS NULL or topics.category_id IN (?)', allowed_ids)
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else
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result = result.where('topics.category_id IS NULL')
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end
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end
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result = result.where('posts.id < ?', before_post_id) if before_post_id
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result.order('posts.created_at desc')
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end
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def self.trust_group_ids
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(10..19).to_a
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end
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def self.refresh_automatic_group!(name)
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id = AUTO_GROUPS[name]
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return unless id
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unless group = self.lookup_group(name)
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group = Group.new(name: name.to_s, automatic: true)
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group.id = id
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group.save!
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end
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group.name = I18n.t("groups.default_names.#{name}")
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# don't allow shoddy localization to break this
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validator = UsernameValidator.new(group.name)
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unless validator.valid_format?
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group.name = name
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end
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# the everyone group is special, it can include non-users so there is no
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# way to have the membership in a table
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if name == :everyone
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group.save!
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return group
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end
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# Remove people from groups they don't belong in.
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#
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# BEWARE: any of these subqueries could match ALL the user records,
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# so they can't be used in IN clauses.
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remove_user_subquery = case name
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when :admins
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"SELECT u.id FROM users u WHERE NOT u.admin"
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when :moderators
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"SELECT u.id FROM users u WHERE NOT u.moderator"
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when :staff
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"SELECT u.id FROM users u WHERE NOT u.admin AND NOT u.moderator"
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when :trust_level_0, :trust_level_1, :trust_level_2, :trust_level_3, :trust_level_4
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"SELECT u.id FROM users u WHERE u.trust_level < #{id - 10}"
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end
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remove_ids = exec_sql("SELECT gu.id id
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FROM group_users gu,
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(#{remove_user_subquery}) u
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WHERE gu.group_id = #{group.id}
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AND gu.user_id = u.id").map {|x| x['id']}
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if remove_ids.length > 0
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remove_ids.each_slice(100) do |ids|
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GroupUser.where(id: ids).delete_all
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end
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end
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# Add people to groups
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real_ids = case name
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when :admins
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"SELECT u.id FROM users u WHERE u.admin"
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when :moderators
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"SELECT u.id FROM users u WHERE u.moderator"
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when :staff
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"SELECT u.id FROM users u WHERE u.moderator OR u.admin"
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when :trust_level_1, :trust_level_2, :trust_level_3, :trust_level_4
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"SELECT u.id FROM users u WHERE u.trust_level >= #{id-10}"
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when :trust_level_0
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"SELECT u.id FROM users u"
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end
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missing_users = GroupUser
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.joins("RIGHT JOIN (#{real_ids}) X ON X.id = user_id AND group_id = #{group.id}")
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.where("user_id IS NULL")
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.select("X.id")
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missing_users.each do |u|
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group.group_users.build(user_id: u.id)
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end
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group.save!
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# we want to ensure consistency
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Group.reset_counters(group.id, :group_users)
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group
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end
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def self.refresh_automatic_groups!(*args)
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if args.length == 0
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args = AUTO_GROUPS.keys
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end
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args.each do |group|
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refresh_automatic_group!(group)
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end
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end
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def self.ensure_automatic_groups!
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AUTO_GROUPS.keys.each do |name|
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refresh_automatic_group!(name) unless lookup_group(name)
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end
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end
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def self.[](name)
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lookup_group(name) || refresh_automatic_group!(name)
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end
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def self.search_group(name, current_user)
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levels = [ALIAS_LEVELS[:everyone]]
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if current_user.admin?
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levels = [ALIAS_LEVELS[:everyone],
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ALIAS_LEVELS[:only_admins],
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ALIAS_LEVELS[:mods_and_admins],
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ALIAS_LEVELS[:members_mods_and_admins]]
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elsif current_user.moderator?
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levels = [ALIAS_LEVELS[:everyone],
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ALIAS_LEVELS[:mods_and_admins],
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ALIAS_LEVELS[:members_mods_and_admins]]
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end
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Group.where("name ILIKE :term_like AND (" +
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" alias_level in (:levels)" +
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" OR (alias_level = #{ALIAS_LEVELS[:members_mods_and_admins]} AND id in (" +
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"SELECT group_id FROM group_users WHERE user_id= :user_id)" +
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")" +
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")", term_like: "#{name.downcase}%", levels: levels, user_id: current_user.id)
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end
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def self.lookup_group(name)
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if id = AUTO_GROUPS[name]
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Group.find_by(id: id)
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else
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unless group = Group.find_by(name: name)
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raise ArgumentError, "unknown group"
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end
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group
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end
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end
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def self.lookup_group_ids(opts)
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if group_ids = opts[:group_ids]
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group_ids = group_ids.split(",").map(&:to_i)
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group_ids = Group.where(id: group_ids).pluck(:id)
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end
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group_ids ||= []
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if group_names = opts[:group_names]
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group_names = group_names.split(",")
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if group_names.present?
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group_ids += Group.where(name: group_names).pluck(:id)
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end
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end
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group_ids
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end
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def self.desired_trust_level_groups(trust_level)
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trust_group_ids.keep_if do |id|
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id == AUTO_GROUPS[:trust_level_0] || (trust_level + 10) >= id
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end
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end
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def self.user_trust_level_change!(user_id, trust_level)
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desired = desired_trust_level_groups(trust_level)
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undesired = trust_group_ids - desired
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GroupUser.where(group_id: undesired, user_id: user_id).delete_all
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desired.each do |id|
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if group = find_by(id: id)
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unless GroupUser.where(group_id: id, user_id: user_id).exists?
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group.group_users.create!(user_id: user_id)
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end
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else
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name = AUTO_GROUP_IDS[trust_level]
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refresh_automatic_group!(name)
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end
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end
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end
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def self.builtin
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Enum.new(:moderators, :admins, :trust_level_1, :trust_level_2)
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end
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def usernames=(val)
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current = usernames.split(",")
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expected = val.split(",")
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additions = expected - current
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deletions = current - expected
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map = Hash[*User.where(username: additions+deletions)
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.select('id,username')
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.map{|u| [u.username,u.id]}.flatten]
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deletions = Set.new(deletions.map{|d| map[d]})
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@deletions = []
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group_users.each do |gu|
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@deletions << gu if deletions.include?(gu.user_id)
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end
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additions.each do |a|
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group_users.build(user_id: map[a])
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end
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end
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def usernames
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users.pluck(:username).join(",")
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end
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def add(user)
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self.users.push(user)
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end
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protected
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def name_format_validator
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UsernameValidator.perform_validation(self, 'name')
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end
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# hack around AR
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def destroy_deletions
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if @deletions
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@deletions.each do |gu|
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gu.destroy
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User.where('id = ? AND primary_group_id = ?', gu.user_id, gu.group_id).update_all 'primary_group_id = NULL'
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end
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end
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@deletions = nil
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end
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end
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# == Schema Information
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#
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# Table name: groups
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#
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# id :integer not null, primary key
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# name :string(255) not null
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# created_at :datetime not null
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# updated_at :datetime not null
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# automatic :boolean default(FALSE), not null
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# user_count :integer default(0), not null
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# alias_level :integer default(0)
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# visible :boolean default(TRUE), not null
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#
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# Indexes
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#
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# index_groups_on_name (name) UNIQUE
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#
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