507 lines
15 KiB
Ruby
507 lines
15 KiB
Ruby
require_dependency 'enum'
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require_dependency 'reviewable/actions'
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require_dependency 'reviewable/conversation'
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require_dependency 'reviewable/editable_fields'
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require_dependency 'reviewable/perform_result'
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require_dependency 'reviewable_serializer'
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class Reviewable < ActiveRecord::Base
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class UpdateConflict < StandardError; end
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class InvalidAction < StandardError
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def initialize(action_id, klass)
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@action_id, @klass = action_id, klass
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super("Can't peform `#{action_id}` on #{klass.name}")
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end
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end
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before_save :apply_review_group
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attr_accessor :created_new
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validates_presence_of :type, :status, :created_by_id
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belongs_to :target, polymorphic: true
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belongs_to :created_by, class_name: 'User'
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belongs_to :target_created_by, class_name: 'User'
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belongs_to :reviewable_by_group, class_name: 'Group'
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# Optional, for filtering
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belongs_to :topic
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belongs_to :category
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has_many :reviewable_histories
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has_many :reviewable_scores
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after_create do
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log_history(:created, created_by)
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end
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after_commit(on: :create) do
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DiscourseEvent.trigger(:reviewable_created, self)
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Jobs.enqueue(:notify_reviewable, reviewable_id: self.id) if pending?
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end
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def self.statuses
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@statuses ||= Enum.new(
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pending: 0,
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approved: 1,
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rejected: 2,
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ignored: 3,
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deleted: 4
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)
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end
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# Generate `pending?`, `rejected?`, etc helper methods
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statuses.each do |name, id|
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define_method("#{name}?") { status == id }
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self.class.define_method(name) { where(status: id) }
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end
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def self.default_visible
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where("score >= ?", SiteSetting.min_score_default_visibility)
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end
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def self.valid_type?(type)
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return false unless type =~ /^Reviewable[A-Za-z]+$/
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type.constantize <= Reviewable
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rescue NameError
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false
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end
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def self.types
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%w[ReviewableFlaggedPost ReviewableQueuedPost ReviewableUser]
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end
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def created_new!
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self.created_new = true
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self.topic = target.topic if topic.blank? && target.is_a?(Post)
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self.target_created_by_id = target.is_a?(Post) ? target.user_id : nil
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self.category_id = topic.category_id if category_id.blank? && topic.present?
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end
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# Create a new reviewable, or if the target has already been reviewed return it to the
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# pending state and re-use it.
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#
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# You probably want to call this to create your reviewable rather than `.create`.
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def self.needs_review!(
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target: nil,
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topic: nil,
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created_by:,
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payload: nil,
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reviewable_by_moderator: false,
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potential_spam: true
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)
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reviewable = new(
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target: target,
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topic: topic,
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created_by: created_by,
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reviewable_by_moderator: reviewable_by_moderator,
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payload: payload,
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potential_spam: potential_spam
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)
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reviewable.created_new!
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reviewable.save!
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reviewable
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rescue ActiveRecord::RecordNotUnique
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row_count = DB.exec(<<~SQL, status: statuses[:pending], id: target.id, type: target.class.name)
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UPDATE reviewables
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SET status = :status
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WHERE status <> :status
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AND target_id = :id
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AND target_type = :type
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SQL
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where(target: target).update_all(potential_spam: true) if potential_spam
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reviewable = find_by(target: target)
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reviewable.log_history(:transitioned, created_by) if row_count > 0
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reviewable
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end
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def add_score(
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user,
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reviewable_score_type,
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reason: nil,
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created_at: nil,
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take_action: false,
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meta_topic_id: nil,
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force_review: false
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)
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type_bonus = PostActionType.where(id: reviewable_score_type).pluck(:score_bonus)[0] || 0
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take_action_bonus = take_action ? 5.0 : 0.0
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sub_total = (ReviewableScore.user_flag_score(user) + type_bonus + take_action_bonus)
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# We can force a reviewable to hit the threshold, for example with queued posts
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if force_review && sub_total < SiteSetting.min_score_default_visibility
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sub_total = SiteSetting.min_score_default_visibility
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end
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rs = reviewable_scores.new(
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user: user,
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status: ReviewableScore.statuses[:pending],
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reviewable_score_type: reviewable_score_type,
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score: sub_total,
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meta_topic_id: meta_topic_id,
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take_action_bonus: take_action_bonus,
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created_at: created_at || Time.zone.now
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)
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rs.reason = reason.to_s if reason
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rs.save!
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update(score: self.score + rs.score, latest_score: rs.created_at)
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topic.update(reviewable_score: topic.reviewable_score + rs.score) if topic
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rs
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end
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def history
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reviewable_histories.order(:created_at)
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end
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def log_history(reviewable_history_type, performed_by, edited: nil)
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reviewable_histories.create!(
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reviewable_history_type: ReviewableHistory.types[reviewable_history_type],
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status: status,
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created_by: performed_by,
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edited: edited
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)
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end
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def apply_review_group
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return unless SiteSetting.enable_category_group_review? && category.present? && category.reviewable_by_group_id
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self.reviewable_by_group_id = category.reviewable_by_group_id
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end
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def actions_for(guardian, args = nil)
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args ||= {}
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Actions.new(self, guardian).tap { |a| build_actions(a, guardian, args) }
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end
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def editable_for(guardian, args = nil)
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args ||= {}
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EditableFields.new(self, guardian, args).tap { |a| build_editable_fields(a, guardian, args) }
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end
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# subclasses must implement "build_actions" to list the actions they're capable of
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def build_actions(actions, guardian, args)
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raise NotImplementedError
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end
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# subclasses can implement "build_editable_fields" to list stuff that can be edited
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def build_editable_fields(actions, guardian, args)
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end
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def update_fields(params, performed_by, version: nil)
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return true if params.blank?
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(params[:payload] || {}).each { |k, v| self.payload[k] = v }
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self.category_id = params[:category_id] if params.has_key?(:category_id)
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result = false
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Reviewable.transaction do
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increment_version!(version)
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changes_json = changes.as_json
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changes_json.delete('version')
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result = save
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log_history(:edited, performed_by, edited: changes_json) if result
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end
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result
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end
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# Delegates to a `perform_#{action_id}` method, which returns a `PerformResult` with
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# the result of the operation and whether the status of the reviewable changed.
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def perform(performed_by, action_id, args = nil)
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args ||= {}
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# Ensure the user has access to the action
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actions = actions_for(Guardian.new(performed_by), args)
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raise InvalidAction.new(action_id, self.class) unless actions.has?(action_id)
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perform_method = "perform_#{action_id}".to_sym
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raise InvalidAction.new(action_id, self.class) unless respond_to?(perform_method)
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result = nil
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update_count = false
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Reviewable.transaction do
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increment_version!(args[:version])
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result = send(perform_method, performed_by, args)
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if result.success?
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update_count = transition_to(result.transition_to, performed_by) if result.transition_to
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update_flag_stats(**result.update_flag_stats) if result.update_flag_stats
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recalculate_score if result.recalculate_score
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end
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end
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if result && result.after_commit
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result.after_commit.call
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end
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Jobs.enqueue(:notify_reviewable, reviewable_id: self.id) if update_count
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result
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end
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def transition_to(status_symbol, performed_by)
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was_pending = pending?
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self.status = Reviewable.statuses[status_symbol]
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save!
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log_history(:transitioned, performed_by)
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DiscourseEvent.trigger(:reviewable_transitioned_to, status_symbol, self)
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if score_status = ReviewableScore.score_transitions[status_symbol]
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reviewable_scores.pending.update_all(
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status: score_status,
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reviewed_by_id: performed_by.id,
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reviewed_at: Time.zone.now
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)
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end
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was_pending
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end
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def post_options
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Discourse.deprecate(
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"Reviewable#post_options is deprecated. Please use #payload instead.",
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output_in_test: true
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)
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end
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def self.bulk_perform_targets(performed_by, action, type, target_ids, args = nil)
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args ||= {}
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viewable_by(performed_by).where(type: type, target_id: target_ids).each do |r|
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r.perform(performed_by, action, args)
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end
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end
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def self.viewable_by(user, order: nil, preload: true)
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return none unless user.present?
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result = self.order(order || 'score desc, created_at desc')
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if preload
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result = result.includes(
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{ created_by: :user_stat },
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:topic,
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:target,
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:target_created_by,
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:reviewable_histories
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).includes(reviewable_scores: { user: :user_stat, meta_topic: :posts })
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end
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return result if user.admin?
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group_ids = SiteSetting.enable_category_group_review? ? user.group_users.pluck(:group_id) : []
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result.where(
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'(reviewable_by_moderator AND :staff) OR (reviewable_by_group_id IN (:group_ids))',
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staff: user.staff?,
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group_ids: group_ids
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).where("category_id IS NULL OR category_id IN (?)", Guardian.new(user).allowed_category_ids)
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end
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def self.pending_count(user)
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list_for(user).count
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end
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def self.list_for(
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user,
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status: :pending,
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category_id: nil,
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topic_id: nil,
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type: nil,
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limit: nil,
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offset: nil,
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min_score: nil,
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username: nil
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)
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min_score ||= SiteSetting.min_score_default_visibility
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order = (status == :pending) ? 'score DESC, created_at DESC' : 'created_at DESC'
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if username.present?
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user_id = User.find_by_username(username)&.id
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return [] if user_id.blank?
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end
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return [] if user.blank?
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result = viewable_by(user, order: order)
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result = by_status(result, status)
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result = result.where(type: type) if type
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result = result.where(category_id: category_id) if category_id
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result = result.where(topic_id: topic_id) if topic_id
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result = result.where("score >= ?", min_score) if min_score
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# If a reviewable doesn't have a target, allow us to filter on who created that reviewable.
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if user_id
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result = result.where(
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"(target_created_by_id IS NULL AND created_by_id = :user_id) OR (target_created_by_id = :user_id)",
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user_id: user_id
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)
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end
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result = result.limit(limit) if limit
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result = result.offset(offset) if offset
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result
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end
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def serializer
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self.class.serializer_for(self)
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end
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def self.lookup_serializer_for(type)
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"#{type}Serializer".constantize
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rescue NameError
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ReviewableSerializer
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end
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def self.serializer_for(reviewable)
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type = reviewable.type
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@@serializers ||= {}
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@@serializers[type] ||= lookup_serializer_for(type)
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end
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def create_result(status, transition_to = nil)
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result = PerformResult.new(self, status)
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result.transition_to = transition_to
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yield result if block_given?
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result
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end
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def self.scores_with_topics
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ReviewableScore.joins(reviewable: :topic).where("reviewables.type = ?", name)
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end
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def self.count_by_date(start_date, end_date, category_id = nil)
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scores_with_topics
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.where('reviewable_scores.created_at BETWEEN ? AND ?', start_date, end_date)
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.where("topics.category_id = COALESCE(?, topics.category_id)", category_id)
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.group("date(reviewable_scores.created_at)")
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.order('date(reviewable_scores.created_at)')
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.count
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end
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protected
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def recalculate_score
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# Recalculate the pending score and return it
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result = DB.query(<<~SQL, id: self.id, pending: ReviewableScore.statuses[:pending])
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UPDATE reviewables
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SET score = COALESCE((
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SELECT sum(score)
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FROM reviewable_scores AS rs
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WHERE rs.reviewable_id = :id
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), 0.0)
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WHERE id = :id
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RETURNING score
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SQL
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# Update topic score
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DB.query(<<~SQL, topic_id: topic_id, pending: Reviewable.statuses[:pending])
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UPDATE topics
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SET reviewable_score = COALESCE((
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SELECT SUM(score)
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FROM reviewables AS r
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WHERE r.topic_id = :topic_id
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), 0.0)
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WHERE id = :topic_id
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SQL
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self.score = result[0].score
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end
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def increment_version!(version = nil)
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version_result = nil
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if version
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version_result = DB.query_single(
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"UPDATE reviewables SET version = version + 1 WHERE id = :id AND version = :version RETURNING version",
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version: version,
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id: self.id
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)
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else
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# We didn't supply a version to update safely, so just increase it
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version_result = DB.query_single(
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"UPDATE reviewables SET version = version + 1 WHERE id = :id RETURNING version",
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id: self.id
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)
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end
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if version_result && version_result[0]
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self.version = version_result[0]
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else
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raise UpdateConflict.new
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end
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end
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def self.by_status(partial_result, status)
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return partial_result if status == :all
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if status == :reviewed
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partial_result.where(status: [statuses[:approved], statuses[:rejected], statuses[:ignored]])
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else
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partial_result.where(status: statuses[status])
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end
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end
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private
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def update_flag_stats(status:, user_ids:)
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return unless [:agreed, :disagreed, :ignored].include?(status)
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# Don't count self-flags
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user_ids -= [post&.user_id]
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return if user_ids.blank?
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result = DB.query(<<~SQL, user_ids: user_ids)
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UPDATE user_stats
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SET flags_#{status} = flags_#{status} + 1
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WHERE user_id IN (:user_ids)
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RETURNING user_id, flags_agreed + flags_disagreed + flags_ignored AS total
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SQL
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user_ids = result.select { |r| r.total > Jobs::TruncateUserFlagStats.truncate_to }.map(&:user_id)
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return if user_ids.blank?
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Jobs.enqueue(:truncate_user_flag_stats, user_ids: user_ids)
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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: reviewables
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#
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# id :bigint(8) not null, primary key
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# type :string not null
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# status :integer default(0), not null
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# created_by_id :integer not null
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# reviewable_by_moderator :boolean default(FALSE), not null
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# reviewable_by_group_id :integer
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# claimed_by_id :integer
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# category_id :integer
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# topic_id :integer
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# score :float default(0.0), not null
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# potential_spam :boolean default(FALSE), not null
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# target_id :integer
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# target_type :string
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# target_created_by_id :integer
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# payload :json
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# version :integer default(0), not null
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# latest_score :datetime
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# created_at :datetime not null
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# updated_at :datetime not null
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#
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# Indexes
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#
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# index_reviewables_on_status_and_created_at (status,created_at)
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# index_reviewables_on_status_and_score (status,score)
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# index_reviewables_on_status_and_type (status,type)
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# index_reviewables_on_topic_id_and_status_and_created_by_id (topic_id,status,created_by_id)
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# index_reviewables_on_type_and_target_id (type,target_id) UNIQUE
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#
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