mirror of
https://github.com/discourse/discourse.git
synced 2024-11-23 07:38:01 +08:00
718 lines
21 KiB
Ruby
718 lines
21 KiB
Ruby
# frozen_string_literal: true
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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 perform `#{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, -> { order(created_at: :desc) }
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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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end
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after_commit(on: [:create, :update]) do
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Jobs.enqueue(:notify_reviewable, reviewable_id: self.id) if pending?
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end
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# Can be used if several actions are equivalent
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def self.action_aliases
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{}
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end
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# The gaps are in case we want more precision in the future
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def self.priorities
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@priorities ||= Enum.new(
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low: 0,
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medium: 5,
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high: 10
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)
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end
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# The gaps are in case we want more precision in the future
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def self.sensitivity
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@sensitivity ||= Enum.new(
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disabled: 0,
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low: 9,
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medium: 6,
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high: 3
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)
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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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# This number comes from looking at forums in the wild and what numbers work.
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# As the site accumulates real data it'll be based on the site activity instead.
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def self.typical_sensitivity
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12.5
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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 >= ?", min_score_for_priority)
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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 self.custom_filters
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@reviewable_filters ||= []
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end
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def self.add_custom_filter(new_filter)
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custom_filters << new_filter
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end
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def self.clear_custom_filters!
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@reviewable_filters = []
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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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if target.blank?
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# If there is no target there's no chance of a conflict
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reviewable.save!
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else
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# In this case, a reviewable might already exist for this (type, target_id) index.
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# ActiveRecord can only validate indexes using a SELECT before the INSERT which
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# is not safe under concurrency. Instead, we perform an UPDATE on the status, and return
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# the previous value. We then know:
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#
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# a) if a previous row existed
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# b) if it was changed
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#
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# And that allows us to complete our logic.
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update_args = {
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status: statuses[:pending],
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id: target.id,
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type: target.class.name,
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potential_spam: potential_spam == true ? true : nil
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}
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row = DB.query_single(<<~SQL, update_args)
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UPDATE reviewables
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SET status = :status,
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potential_spam = COALESCE(:potential_spam, reviewables.potential_spam)
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FROM reviewables AS old_reviewables
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WHERE reviewables.target_id = :id
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AND reviewables.target_type = :type
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RETURNING old_reviewables.status
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SQL
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old_status = row[0]
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if old_status.blank?
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reviewable.save!
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else
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reviewable = find_by(target: target)
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reviewable.log_history(:transitioned, created_by) if old_status != statuses[:pending]
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end
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end
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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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user_accuracy_bonus = ReviewableScore.user_accuracy_bonus(user)
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sub_total = ReviewableScore.calculate_score(user, type_bonus, take_action_bonus)
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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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user_accuracy_bonus: user_accuracy_bonus,
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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, force_review: force_review)
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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 self.set_priorities(values)
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values.each do |k, v|
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id = Reviewable.priorities[k]
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PluginStore.set('reviewables', "priority_#{id}", v) unless id.nil?
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end
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end
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def self.sensitivity_score_value(sensitivity, scale)
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return Float::MAX if sensitivity == 0
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ratio = sensitivity / Reviewable.sensitivity[:low].to_f
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high = (
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PluginStore.get('reviewables', "priority_#{Reviewable.priorities[:high]}") ||
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typical_sensitivity
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).to_f
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# We want this to be hard to reach
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((high.to_f * ratio) * scale).truncate(2)
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end
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def self.sensitivity_score(sensitivity, scale: 1.0)
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# If the score is less than the default visibility, bring it up to that level.
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# Otherwise we have the confusing situation where a post might be hidden and
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# moderators would never see it!
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[sensitivity_score_value(sensitivity, scale), min_score_for_priority].max
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end
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def self.score_to_auto_close_topic
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sensitivity_score(SiteSetting.auto_close_topic_sensitivity, scale: 2.5)
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end
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def self.spam_score_to_silence_new_user
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sensitivity_score(SiteSetting.silence_new_user_sensitivity, scale: 0.6)
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end
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def self.score_required_to_hide_post
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sensitivity_score(SiteSetting.hide_post_sensitivity)
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end
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def self.min_score_for_priority(priority = nil)
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priority ||= SiteSetting.reviewable_default_visibility
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id = Reviewable.priorities[priority.to_sym]
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return 0.0 if id.nil?
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PluginStore.get('reviewables', "priority_#{id}").to_f
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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_moderation? &&
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category.present? &&
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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 do |actions|
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build_actions(actions, guardian, args)
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end
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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 do |fields|
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build_editable_fields(fields, guardian, args)
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end
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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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# Support this action or any aliases
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aliases = self.class.action_aliases
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valid = [ action_id, aliases.to_a.select { |k, v| v == action_id }.map(&:first) ].flatten
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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 valid.any? { |a| actions.has?(a) }
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perform_method = "perform_#{aliases[action_id] || 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 = public_send(perform_method, performed_by, args)
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raise ActiveRecord::Rollback unless 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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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 || 'reviewables.score desc, reviewables.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_moderation? ? user.group_users.pluck(:group_id) : []
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result.where(
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'(reviewables.reviewable_by_moderator AND :staff) OR (reviewables.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("reviewables.category_id IS NULL OR reviewables.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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priority: nil,
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username: nil,
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reviewed_by: nil,
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sort_order: nil,
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from_date: nil,
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to_date: nil,
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additional_filters: {}
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)
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min_score = Reviewable.min_score_for_priority(priority)
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order = case sort_order
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when 'score_asc'
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'reviewables.score ASC, reviewables.created_at DESC'
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when 'created_at'
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'reviewables.created_at DESC, reviewables.score DESC'
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when 'created_at_asc'
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'reviewables.created_at ASC, reviewables.score DESC'
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else
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'reviewables.score DESC, reviewables.created_at DESC'
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end
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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('reviewables.type = ?', type) if type
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result = result.where('reviewables.category_id = ?', category_id) if category_id
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result = result.where('reviewables.topic_id = ?', topic_id) if topic_id
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result = result.where("reviewables.created_at >= ?", from_date) if from_date
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result = result.where("reviewables.created_at <= ?", to_date) if to_date
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if reviewed_by
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reviewed_by_id = User.find_by_username(reviewed_by)&.id
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return [] if reviewed_by_id.nil?
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result = result.joins(<<~SQL
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INNER JOIN(
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SELECT reviewable_id
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FROM reviewable_histories
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WHERE reviewable_history_type = #{ReviewableHistory.types[:transitioned]} AND
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status <> #{Reviewable.statuses[:pending]} AND created_by_id = #{reviewed_by_id}
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) AS rh ON rh.reviewable_id = reviewables.id
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SQL
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)
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end
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if min_score > 0 && status == :pending
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result = result.where("reviewables.score >= ? OR reviewables.force_review", min_score)
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elsif min_score > 0
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result = result.where("reviewables.score >= ?", min_score)
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end
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if !custom_filters.empty?
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result = custom_filters.reduce(result) do |memo, filter|
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key = filter.first
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filter_query = filter.last
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next(memo) unless additional_filters[key]
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filter_query.call(result, additional_filters[key])
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end
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end
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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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"(reviewables.target_created_by_id IS NULL AND reviewables.created_by_id = :user_id)
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OR (reviewables.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)
|
|
result = PerformResult.new(self, status)
|
|
result.transition_to = transition_to
|
|
yield result if block_given?
|
|
result
|
|
end
|
|
|
|
def self.scores_with_topics
|
|
ReviewableScore.joins(reviewable: :topic).where("reviewables.type = ?", name)
|
|
end
|
|
|
|
def self.count_by_date(start_date, end_date, category_id = nil, include_subcategories = false)
|
|
query = scores_with_topics.where('reviewable_scores.created_at BETWEEN ? AND ?', start_date, end_date)
|
|
|
|
if category_id
|
|
if include_subcategories
|
|
query = query.where("topics.category_id IN (?)", Category.subcategory_ids(category_id))
|
|
else
|
|
query = query.where("topics.category_id = ?", category_id)
|
|
end
|
|
end
|
|
|
|
query
|
|
.group("date(reviewable_scores.created_at)")
|
|
.order('date(reviewable_scores.created_at)')
|
|
.count
|
|
end
|
|
|
|
def explain_score
|
|
DB.query(<<~SQL, reviewable_id: id)
|
|
SELECT rs.reviewable_id,
|
|
rs.user_id,
|
|
CASE WHEN (u.admin OR u.moderator) THEN 5.0 ELSE u.trust_level END AS trust_level_bonus,
|
|
us.flags_agreed,
|
|
us.flags_disagreed,
|
|
us.flags_ignored,
|
|
rs.score,
|
|
rs.user_accuracy_bonus,
|
|
rs.take_action_bonus,
|
|
COALESCE(pat.score_bonus, 0.0) AS type_bonus
|
|
FROM reviewable_scores AS rs
|
|
INNER JOIN users AS u ON u.id = rs.user_id
|
|
LEFT OUTER JOIN user_stats AS us ON us.user_id = rs.user_id
|
|
LEFT OUTER JOIN post_action_types AS pat ON pat.id = rs.reviewable_score_type
|
|
WHERE rs.reviewable_id = :reviewable_id
|
|
SQL
|
|
end
|
|
|
|
protected
|
|
|
|
def recalculate_score
|
|
# pending/agreed scores count
|
|
sql = <<~SQL
|
|
UPDATE reviewables
|
|
SET score = COALESCE((
|
|
SELECT sum(score)
|
|
FROM reviewable_scores AS rs
|
|
WHERE rs.reviewable_id = :id
|
|
AND rs.status IN (:pending, :agreed)
|
|
), 0.0)
|
|
WHERE id = :id
|
|
RETURNING score
|
|
SQL
|
|
|
|
result = DB.query(
|
|
sql,
|
|
id: self.id,
|
|
pending: ReviewableScore.statuses[:pending],
|
|
agreed: ReviewableScore.statuses[:agreed]
|
|
)
|
|
|
|
# Update topic score
|
|
sql = <<~SQL
|
|
UPDATE topics
|
|
SET reviewable_score = COALESCE((
|
|
SELECT SUM(score)
|
|
FROM reviewables AS r
|
|
WHERE r.topic_id = :topic_id
|
|
AND r.status IN (:pending, :approved)
|
|
), 0.0)
|
|
WHERE id = :topic_id
|
|
SQL
|
|
|
|
DB.query(
|
|
sql,
|
|
topic_id: topic_id,
|
|
pending: Reviewable.statuses[:pending],
|
|
approved: Reviewable.statuses[:approved]
|
|
)
|
|
|
|
self.score = result[0].score
|
|
end
|
|
|
|
def increment_version!(version = nil)
|
|
version_result = nil
|
|
|
|
if version
|
|
version_result = DB.query_single(
|
|
"UPDATE reviewables SET version = version + 1 WHERE id = :id AND version = :version RETURNING version",
|
|
version: version,
|
|
id: self.id
|
|
)
|
|
else
|
|
# We didn't supply a version to update safely, so just increase it
|
|
version_result = DB.query_single(
|
|
"UPDATE reviewables SET version = version + 1 WHERE id = :id RETURNING version",
|
|
id: self.id
|
|
)
|
|
end
|
|
|
|
if version_result && version_result[0]
|
|
self.version = version_result[0]
|
|
else
|
|
raise UpdateConflict.new
|
|
end
|
|
end
|
|
|
|
def self.by_status(partial_result, status)
|
|
return partial_result if status == :all
|
|
|
|
if status == :reviewed
|
|
partial_result.where(status: statuses.except(:pending).values)
|
|
else
|
|
partial_result.where(status: statuses[status])
|
|
end
|
|
end
|
|
|
|
private
|
|
|
|
def update_flag_stats(status:, user_ids:)
|
|
return unless [:agreed, :disagreed, :ignored].include?(status)
|
|
|
|
# Don't count self-flags
|
|
user_ids -= [post&.user_id]
|
|
return if user_ids.blank?
|
|
|
|
result = DB.query(<<~SQL, user_ids: user_ids)
|
|
UPDATE user_stats
|
|
SET flags_#{status} = flags_#{status} + 1
|
|
WHERE user_id IN (:user_ids)
|
|
RETURNING user_id, flags_agreed + flags_disagreed + flags_ignored AS total
|
|
SQL
|
|
|
|
user_ids = result.select { |r| r.total > Jobs::TruncateUserFlagStats.truncate_to }.map(&:user_id)
|
|
return if user_ids.blank?
|
|
|
|
Jobs.enqueue(:truncate_user_flag_stats, user_ids: user_ids)
|
|
end
|
|
end
|
|
|
|
# == Schema Information
|
|
#
|
|
# Table name: reviewables
|
|
#
|
|
# id :bigint not null, primary key
|
|
# type :string not null
|
|
# status :integer default(0), not null
|
|
# created_by_id :integer not null
|
|
# reviewable_by_moderator :boolean default(FALSE), not null
|
|
# reviewable_by_group_id :integer
|
|
# category_id :integer
|
|
# topic_id :integer
|
|
# score :float default(0.0), not null
|
|
# potential_spam :boolean default(FALSE), not null
|
|
# target_id :integer
|
|
# target_type :string
|
|
# target_created_by_id :integer
|
|
# payload :json
|
|
# version :integer default(0), not null
|
|
# latest_score :datetime
|
|
# created_at :datetime not null
|
|
# updated_at :datetime not null
|
|
#
|
|
# Indexes
|
|
#
|
|
# index_reviewables_on_reviewable_by_group_id (reviewable_by_group_id)
|
|
# index_reviewables_on_status_and_created_at (status,created_at)
|
|
# index_reviewables_on_status_and_score (status,score)
|
|
# index_reviewables_on_status_and_type (status,type)
|
|
# index_reviewables_on_target_id_where_post_type_eq_post (target_id) WHERE ((target_type)::text = 'Post'::text)
|
|
# index_reviewables_on_topic_id_and_status_and_created_by_id (topic_id,status,created_by_id)
|
|
# index_reviewables_on_type_and_target_id (type,target_id) UNIQUE
|
|
#
|