discourse/app/models/post.rb
Krzysztof Kotlarek e82e255531
FIX: serialize Flags instead of PostActionType (#28362)
### Why?
Before, all flags were static. Therefore, they were stored in class variables and serialized by SiteSerializer. Recently, we added an option for admins to add their own flags or disable existing flags. Therefore, the class variable had to be dropped because it was unsafe for a multisite environment. However, it started causing performance problems. 

### Solution
When a new Flag system is used, instead of using PostActionType, we can serialize Flags and use fragment cache for performance reasons. 

At the same time, we are still supporting deprecated `replace_flags` API call. When it is used, we fall back to the old solution and the admin cannot add custom flags. In a couple of months, we will be able to drop that API function and clean that code properly. However, because it may still be used, redis cache was introduced to improve performance.

To test backward compatibility you can add this code to any plugin
```ruby
  replace_flags do |flag_settings|
    flag_settings.add(
      4,
      :inappropriate,
      topic_type: true,
      notify_type: true,
      auto_action_type: true,
    )
    flag_settings.add(1001, :trolling, topic_type: true, notify_type: true, auto_action_type: true)
  end
```
2024-08-14 12:13:46 +10:00

1430 lines
43 KiB
Ruby

# frozen_string_literal: true
require "archetype"
require "digest/sha1"
class Post < ActiveRecord::Base
include RateLimiter::OnCreateRecord
include Trashable
include Searchable
include HasCustomFields
include LimitedEdit
self.ignored_columns = [
"avg_time", # TODO: Remove when 20240212034010_drop_deprecated_columns has been promoted to pre-deploy
"image_url", # TODO: Remove when 20240212034010_drop_deprecated_columns has been promoted to pre-deploy
]
cattr_accessor :plugin_permitted_create_params, :plugin_permitted_update_params
self.plugin_permitted_create_params = {}
self.plugin_permitted_update_params = {}
# increase this number to force a system wide post rebake
# Recreate `index_for_rebake_old` when the number is increased
# Version 1, was the initial version
# Version 2 15-12-2017, introduces CommonMark and a huge number of onebox fixes
BAKED_VERSION = 2
# Time between the delete and permanent delete of a post
PERMANENT_DELETE_TIMER = 5.minutes
rate_limit
rate_limit :limit_posts_per_day
belongs_to :user
belongs_to :topic
belongs_to :reply_to_user, class_name: "User"
has_many :post_replies
has_many :replies, through: :post_replies
has_many :post_actions, dependent: :destroy
has_many :topic_links
has_many :group_mentions, dependent: :destroy
has_many :upload_references, as: :target, dependent: :destroy
has_many :uploads, through: :upload_references
has_one :post_stat
has_many :bookmarks, as: :bookmarkable
has_one :incoming_email
has_many :post_details
has_many :post_revisions
has_many :revisions, -> { order(:number) }, foreign_key: :post_id, class_name: "PostRevision"
has_many :user_actions, foreign_key: :target_post_id
belongs_to :image_upload, class_name: "Upload"
has_many :post_hotlinked_media, dependent: :destroy, class_name: "PostHotlinkedMedia"
has_many :reviewables, as: :target, dependent: :destroy
validates_with PostValidator, unless: :skip_validation
validates :edit_reason, length: { maximum: 1000 }
after_commit :index_search
# We can pass several creating options to a post via attributes
attr_accessor :image_sizes,
:quoted_post_numbers,
:no_bump,
:invalidate_oneboxes,
:cooking_options,
:skip_unique_check,
:skip_validation
MISSING_UPLOADS ||= "missing uploads"
MISSING_UPLOADS_IGNORED ||= "missing uploads ignored"
NOTICE ||= "notice"
SHORT_POST_CHARS ||= 1200
register_custom_field_type(MISSING_UPLOADS, :json)
register_custom_field_type(MISSING_UPLOADS_IGNORED, :boolean)
register_custom_field_type(NOTICE, :json)
scope :private_posts_for_user,
->(user) do
where(
"topics.id IN (#{Topic::PRIVATE_MESSAGES_SQL_USER})
OR topics.id IN (#{Topic::PRIVATE_MESSAGES_SQL_GROUP})",
user_id: user.id,
)
end
scope :by_newest, -> { order("created_at DESC, id DESC") }
scope :by_post_number, -> { order("post_number ASC") }
scope :with_user, -> { includes(:user) }
scope :created_since, ->(time_ago) { where("posts.created_at > ?", time_ago) }
scope :public_posts,
-> { joins(:topic).where("topics.archetype <> ?", Archetype.private_message) }
scope :private_posts,
-> { joins(:topic).where("topics.archetype = ?", Archetype.private_message) }
scope :with_topic_subtype, ->(subtype) { joins(:topic).where("topics.subtype = ?", subtype) }
scope :visible, -> { joins(:topic).where("topics.visible = true").where(hidden: false) }
scope :secured,
->(guardian) { where("posts.post_type IN (?)", Topic.visible_post_types(guardian&.user)) }
scope :for_mailing_list,
->(user, since) do
q =
created_since(since).joins(
"INNER JOIN (#{Topic.for_digest(user, Time.at(0)).select(:id).to_sql}) AS digest_topics ON digest_topics.id = posts.topic_id",
) # we want all topics with new content, regardless when they were created
.order("posts.created_at ASC")
q = q.where.not(post_type: Post.types[:whisper]) unless user.staff?
q
end
scope :raw_match,
->(pattern, type = "string") do
type = type&.downcase
case type
when "string"
where("raw ILIKE ?", "%#{pattern}%")
when "regex"
where("raw ~* ?", "(?n)#{pattern}")
end
end
scope :have_uploads,
-> do
where(
"
(
posts.cooked LIKE '%<a %' OR
posts.cooked LIKE '%<img %' OR
posts.cooked LIKE '%<video %'
) AND (
posts.cooked LIKE ? OR
posts.cooked LIKE '%/original/%' OR
posts.cooked LIKE '%/optimized/%' OR
posts.cooked LIKE '%data-orig-src=%' OR
posts.cooked LIKE '%/uploads/short-url/%'
)",
"%/uploads/#{RailsMultisite::ConnectionManagement.current_db}/%",
)
end
delegate :username, to: :user
def self.hidden_reasons
@hidden_reasons ||=
Enum.new(
flag_threshold_reached: 1,
flag_threshold_reached_again: 2,
new_user_spam_threshold_reached: 3,
flagged_by_tl3_user: 4,
email_spam_header_found: 5,
flagged_by_tl4_user: 6,
email_authentication_result_header: 7,
imported_as_unlisted: 8,
)
end
def self.types
@types ||= Enum.new(regular: 1, moderator_action: 2, small_action: 3, whisper: 4)
end
def self.cook_methods
@cook_methods ||= Enum.new(regular: 1, raw_html: 2, email: 3)
end
def self.notices
@notices ||= Enum.new(custom: "custom", new_user: "new_user", returning_user: "returning_user")
end
def self.find_by_detail(key, value)
includes(:post_details).find_by(post_details: { key: key, value: value })
end
def self.find_by_number(topic_id, post_number)
find_by(topic_id: topic_id, post_number: post_number)
end
def whisper?
post_type == Post.types[:whisper]
end
def add_detail(key, value, extra = nil)
post_details.build(key: key, value: value, extra: extra)
end
def limit_posts_per_day
if user && user.new_user_posting_on_first_day? && post_number && post_number > 1
RateLimiter.new(
user,
"first-day-replies-per-day",
SiteSetting.max_replies_in_first_day,
1.day.to_i,
)
end
end
def readers_count
read_count = reads - 1 # Excludes poster
read_count < 0 ? 0 : read_count
end
def publish_change_to_clients!(type, opts = {})
# special failsafe for posts missing topics consistency checks should fix,
# but message is safe to skip
return unless topic
skip_topic_stats = opts.delete(:skip_topic_stats)
message = {
id: id,
post_number: post_number,
updated_at: Time.now,
user_id: user_id,
last_editor_id: last_editor_id,
type: type,
version: version,
}.merge(opts)
publish_message!("/topic/#{topic_id}", message)
Topic.publish_stats_to_clients!(topic.id, type) unless skip_topic_stats
end
def publish_message!(channel, message, opts = {})
return unless topic
if Topic.visible_post_types.include?(post_type)
opts.merge!(topic.secure_audience_publish_messages)
else
opts[:user_ids] = User.human_users.where("admin OR moderator OR id = ?", user_id).pluck(:id)
end
MessageBus.publish(channel, message, opts) if opts[:user_ids] != [] && opts[:group_ids] != []
end
def trash!(trashed_by = nil)
self.topic_links.each(&:destroy)
self.save_custom_fields if self.custom_fields.delete(Post::NOTICE)
super(trashed_by)
end
def recover!
super
recover_public_post_actions
TopicLink.extract_from(self)
QuotedPost.extract_from(self)
topic.category.update_latest if topic && topic.category_id && topic.category
end
# The key we use in redis to ensure unique posts
def unique_post_key
"unique#{topic&.private_message? ? "-pm" : ""}-post-#{user_id}:#{raw_hash}"
end
def store_unique_post_key
if SiteSetting.unique_posts_mins > 0
Discourse.redis.setex(unique_post_key, SiteSetting.unique_posts_mins.minutes.to_i, id)
end
end
def matches_recent_post?
post_id = Discourse.redis.get(unique_post_key)
post_id != (nil) && post_id.to_i != (id)
end
def raw_hash
return if raw.blank?
Digest::SHA1.hexdigest(raw)
end
def self.allowed_image_classes
@allowed_image_classes ||= %w[avatar favicon thumbnail emoji ytp-thumbnail-image]
end
def post_analyzer
@post_analyzers ||= {}
@post_analyzers[raw_hash] ||= PostAnalyzer.new(raw, topic_id)
end
%w[
raw_mentions
linked_hosts
embedded_media_count
attachment_count
link_count
raw_links
has_oneboxes?
].each { |attr| define_method(attr) { post_analyzer.public_send(attr) } }
def add_nofollow?
return false if user&.staff?
user.blank? || SiteSetting.tl3_links_no_follow? || !user.has_trust_level?(TrustLevel[3])
end
def omit_nofollow?
!add_nofollow?
end
def cook(raw, opts = {})
# For some posts, for example those imported via RSS, we support raw HTML. In that
# case we can skip the rendering pipeline.
return raw if cook_method == Post.cook_methods[:raw_html]
options = opts.dup
options[:cook_method] = cook_method
# A rule in our Markdown pipeline may have Guardian checks that require a
# user to be present. The last editing user of the post will be more
# generally up to date than the creating user. For example, we use
# this when cooking #hashtags to determine whether we should render
# the found hashtag based on whether the user can access the category it
# is referencing.
options[:user_id] = self.last_editor_id
options[:omit_nofollow] = true if omit_nofollow?
options[:post_id] = self.id
if self.should_secure_uploads?
each_upload_url do |url|
uri = URI.parse(url)
if FileHelper.is_supported_media?(File.basename(uri.path))
raw =
raw.sub(
url,
Rails.application.routes.url_for(
controller: "uploads",
action: "show_secure",
path: uri.path[1..-1],
host: Discourse.current_hostname,
),
)
end
end
end
cooked = post_analyzer.cook(raw, options)
new_cooked = Plugin::Filter.apply(:after_post_cook, self, cooked)
if post_type == Post.types[:regular]
if new_cooked != cooked && new_cooked.blank?
Rails.logger.debug("Plugin is blanking out post: #{self.url}\nraw: #{raw}")
elsif new_cooked.blank?
Rails.logger.debug("Blank post detected post: #{self.url}\nraw: #{raw}")
end
end
new_cooked
end
# Sometimes the post is being edited by someone else, for example, a mod.
# If that's the case, they should not be bound by the original poster's
# restrictions, for example on not posting images.
def acting_user
@acting_user || user
end
def acting_user=(pu)
@acting_user = pu
end
def last_editor
self.last_editor_id ? (User.find_by_id(self.last_editor_id) || user) : user
end
def allowed_spam_hosts
hosts =
SiteSetting
.allowed_spam_host_domains
.split("|")
.map { |h| h.strip }
.reject { |h| !h.include?(".") }
hosts << GlobalSetting.hostname
hosts << RailsMultisite::ConnectionManagement.current_hostname
end
def total_hosts_usage
hosts = linked_hosts.clone
allowlisted = allowed_spam_hosts
hosts.reject! { |h| allowlisted.any? { |w| h.end_with?(w) } }
return hosts if hosts.length == 0
TopicLink
.where(domain: hosts.keys, user_id: acting_user.id)
.group(:domain, :post_id)
.count
.each_key do |tuple|
domain = tuple[0]
hosts[domain] = (hosts[domain] || 0) + 1
end
hosts
end
# Prevent new users from posting the same hosts too many times.
def has_host_spam?
if acting_user.present? &&
(
acting_user.staged? || acting_user.mature_staged? ||
acting_user.has_trust_level?(TrustLevel[1])
)
return false
end
return false if topic&.private_message?
total_hosts_usage.values.any? { |count| count >= SiteSetting.newuser_spam_host_threshold }
end
def archetype
topic&.archetype
end
def self.regular_order
order(:sort_order, :post_number)
end
def self.reverse_order
order("sort_order desc, post_number desc")
end
def self.summary(topic_id)
topic_id = topic_id.to_i
# percent rank has tons of ties
where(topic_id: topic_id).where(
[
"posts.id = ANY(
(
SELECT posts.id
FROM posts
WHERE posts.topic_id = #{topic_id.to_i}
AND posts.post_number = 1
) UNION
(
SELECT p1.id
FROM posts p1
WHERE p1.percent_rank <= ?
AND p1.topic_id = #{topic_id.to_i}
ORDER BY p1.percent_rank
LIMIT ?
)
)",
SiteSetting.summary_percent_filter.to_f / 100.0,
SiteSetting.summary_max_results,
],
)
end
def delete_post_notices
self.custom_fields.delete(Post::NOTICE)
self.save_custom_fields
end
def recover_public_post_actions
PostAction
.publics
.with_deleted
.where(post_id: self.id, id: self.custom_fields["deleted_public_actions"])
.find_each do |post_action|
post_action.recover!
post_action.save!
end
self.custom_fields.delete("deleted_public_actions")
self.save_custom_fields
end
def filter_quotes(parent_post = nil)
return cooked if parent_post.blank?
# We only filter quotes when there is exactly 1
return cooked unless (quote_count == 1)
parent_raw = parent_post.raw.sub(%r{\[quote.+/quote\]}m, "")
if raw[parent_raw] || (parent_raw.size < SHORT_POST_CHARS)
return cooked.sub(%r{\<aside.+\</aside\>}m, "")
end
cooked
end
def external_id
"#{topic_id}/#{post_number}"
end
def reply_to_post
return if reply_to_post_number.blank?
@reply_to_post ||=
Post.find_by(
"topic_id = :topic_id AND post_number = :post_number",
topic_id: topic_id,
post_number: reply_to_post_number,
)
end
def reply_notification_target
return if reply_to_post_number.blank?
Post.find_by(
"topic_id = :topic_id AND post_number = :post_number AND user_id <> :user_id",
topic_id: topic_id,
post_number: reply_to_post_number,
user_id: user_id,
).try(:user)
end
def self.excerpt(cooked, maxlength = nil, options = {})
maxlength ||= SiteSetting.post_excerpt_maxlength
PrettyText.excerpt(cooked, maxlength, options)
end
# Strip out most of the markup
def excerpt(maxlength = nil, options = {})
Post.excerpt(cooked, maxlength, options.merge(post: self))
end
def excerpt_for_topic
Post.excerpt(
cooked,
SiteSetting.topic_excerpt_maxlength,
strip_links: true,
strip_images: true,
post: self,
)
end
def is_first_post?
post_number.blank? ? topic.try(:highest_post_number) == 0 : post_number == 1
end
def is_category_description?
topic.present? && topic.is_category_topic? && is_first_post?
end
def is_reply_by_email?
via_email && post_number.present? && post_number > 1
end
def is_flagged?
flags.count != 0
end
def post_action_type_view
@post_action_type_view ||= PostActionTypeView.new
end
def flags
post_actions.where(
post_action_type_id: post_action_type_view.flag_types_without_additional_message.values,
deleted_at: nil,
)
end
def reviewable_flag
ReviewableFlaggedPost.pending.find_by(target: self)
end
# NOTE (martin): This is turning into hack city; when changing this also
# consider how it interacts with UploadSecurity and the uploads.rake tasks.
def should_secure_uploads?
return false if !SiteSetting.secure_uploads?
topic_including_deleted = Topic.with_deleted.find_by(id: self.topic_id)
return false if topic_including_deleted.blank?
# NOTE: This is to be used for plugins where adding a new public upload
# type that should not be secured via UploadSecurity.register_custom_public_type
# is not an option. This also is not taken into account in the secure upload
# rake tasks, and will more than likely change in future.
modifier_result =
DiscoursePluginRegistry.apply_modifier(
:post_should_secure_uploads?,
nil,
self,
topic_including_deleted,
)
return modifier_result if !modifier_result.nil?
# NOTE: This is meant to be a stopgap solution to prevent secure uploads
# in a single place (private messages) for sensitive admin data exports.
# Ideally we would want a more comprehensive way of saying that certain
# upload types get secured which is a hybrid/mixed mode secure uploads,
# but for now this will do the trick.
return topic_including_deleted.private_message? if SiteSetting.secure_uploads_pm_only?
SiteSetting.login_required? || topic_including_deleted.private_message? ||
topic_including_deleted.read_restricted_category?
end
def hide!(post_action_type_id, reason = nil, custom_message: nil)
return if hidden?
reason ||=
(
if hidden_at
Post.hidden_reasons[:flag_threshold_reached_again]
else
Post.hidden_reasons[:flag_threshold_reached]
end
)
hiding_again = hidden_at.present?
Post.transaction do
self.skip_validation = true
should_update_user_stat = true
update!(hidden: true, hidden_at: Time.zone.now, hidden_reason_id: reason)
any_visible_posts_in_topic =
Post.exists?(topic_id: topic_id, hidden: false, post_type: Post.types[:regular])
if !any_visible_posts_in_topic
self.topic.update_status(
"visible",
false,
Discourse.system_user,
{ visibility_reason_id: Topic.visibility_reasons[:op_flag_threshold_reached] },
)
should_update_user_stat = false
end
# We need to do this because TopicStatusUpdater also does the decrement
# and we don't want to double count for the OP.
UserStatCountUpdater.decrement!(self) if should_update_user_stat
end
# inform user
if user.present?
options = {
url: url,
edit_delay: SiteSetting.cooldown_minutes_after_hiding_posts,
flag_reason:
I18n.t(
"flag_reasons.#{post_action_type_view.types[post_action_type_id]}",
locale: SiteSetting.default_locale,
base_path: Discourse.base_path,
),
}
message = custom_message
message = hiding_again ? :post_hidden_again : :post_hidden if message.nil?
Jobs.enqueue_in(
5.seconds,
:send_system_message,
user_id: user.id,
message_type: message.to_s,
message_options: options,
)
end
end
def unhide!
Post.transaction do
self.update!(hidden: false)
should_update_user_stat = true
# NOTE: We have to consider `nil` a valid reason here because historically
# topics didn't have a visibility_reason_id, if we didn't do this we would
# break backwards compat since we cannot backfill data.
hidden_because_of_op_flagging =
self.topic.visibility_reason_id == Topic.visibility_reasons[:op_flag_threshold_reached] ||
self.topic.visibility_reason_id.nil?
if is_first_post? && hidden_because_of_op_flagging
self.topic.update_status(
"visible",
true,
Discourse.system_user,
{ visibility_reason_id: Topic.visibility_reasons[:op_unhidden] },
)
should_update_user_stat = false
end
# We need to do this because TopicStatusUpdater also does the increment
# and we don't want to double count for the OP.
UserStatCountUpdater.increment!(self) if should_update_user_stat
save(validate: false)
end
publish_change_to_clients!(:acted)
end
def full_url(opts = {})
"#{Discourse.base_url}#{url(opts)}"
end
def relative_url(opts = {})
"#{Discourse.base_path}#{url(opts)}"
end
def url(opts = nil)
opts ||= {}
if topic
Post.url(topic.slug, topic.id, post_number, opts)
else
"/404"
end
end
def canonical_url
topic_view = TopicView.new(topic, nil, post_number: post_number)
page = ""
page = "?page=#{topic_view.page}" if topic_view.page > 1
"#{topic.url}#{page}#post_#{post_number}"
end
def unsubscribe_url(user)
key_value = UnsubscribeKey.create_key_for(user, UnsubscribeKey::TOPIC_TYPE, post: self)
"#{Discourse.base_url}/email/unsubscribe/#{key_value}"
end
def self.url(slug, topic_id, post_number, opts = nil)
opts ||= {}
result = +"/t/"
result << "#{slug}/" if !opts[:without_slug]
if post_number == 1 && opts[:share_url]
"#{result}#{topic_id}"
else
"#{result}#{topic_id}/#{post_number}"
end
end
def self.urls(post_ids)
ids = post_ids.map { |u| u }
if ids.length > 0
urls = {}
Topic
.joins(:posts)
.where("posts.id" => ids)
.select(["posts.id as post_id", "post_number", "topics.slug", "topics.title", "topics.id"])
.each { |t| urls[t.post_id.to_i] = url(t.slug, t.id, t.post_number) }
urls
else
{}
end
end
def revise(updated_by, changes = {}, opts = {})
PostRevisor.new(self).revise!(updated_by, changes, opts)
end
def self.rebake_old(limit, priority: :normal, rate_limiter: true)
limiter =
RateLimiter.new(
nil,
"global_periodical_rebake_limit",
GlobalSetting.max_old_rebakes_per_15_minutes,
900,
global: true,
)
problems = []
Post
.where("baked_version IS NULL OR baked_version < ?", BAKED_VERSION)
.order("id desc")
.limit(limit)
.pluck(:id)
.each do |id|
begin
break if !limiter.can_perform?
post = Post.find(id)
post.rebake!(priority: priority)
begin
limiter.performed! if rate_limiter
rescue RateLimiter::LimitExceeded
break
end
rescue => e
problems << { post: post, ex: e }
attempts = post.custom_fields["rebake_attempts"].to_i
if attempts > 3
post.update_columns(baked_version: BAKED_VERSION)
Discourse.warn_exception(
e,
message: "Can not rebake post# #{post.id} after 3 attempts, giving up",
)
else
post.custom_fields["rebake_attempts"] = attempts + 1
post.save_custom_fields
end
end
end
problems
end
def rebake!(invalidate_broken_images: false, invalidate_oneboxes: false, priority: nil)
new_cooked = cook(raw, topic_id: topic_id, invalidate_oneboxes: invalidate_oneboxes)
old_cooked = cooked
update_columns(cooked: new_cooked, baked_at: Time.zone.now, baked_version: BAKED_VERSION)
topic&.update_excerpt(excerpt_for_topic) if is_first_post?
if invalidate_broken_images
post_hotlinked_media.download_failed.destroy_all
post_hotlinked_media.upload_create_failed.destroy_all
end
# Extracts urls from the body
TopicLink.extract_from(self)
QuotedPost.extract_from(self)
# make sure we trigger the post process
trigger_post_process(bypass_bump: true, priority: priority)
publish_change_to_clients!(:rebaked)
new_cooked != old_cooked
end
def set_owner(new_user, actor, skip_revision = false)
return if user_id == new_user.id
edit_reason = I18n.t("change_owner.post_revision_text", locale: SiteSetting.default_locale)
revise(
actor,
{ raw: self.raw, user_id: new_user.id, edit_reason: edit_reason },
bypass_bump: true,
skip_revision: skip_revision,
skip_validations: true,
)
topic.update_columns(last_post_user_id: new_user.id) if post_number == topic.highest_post_number
end
before_create { PostCreator.before_create_tasks(self) }
def self.estimate_posts_per_day
val = Discourse.redis.get("estimated_posts_per_day")
return val.to_i if val
posts_per_day =
Topic.listable_topics.secured.joins(:posts).merge(Post.created_since(30.days.ago)).count / 30
Discourse.redis.setex("estimated_posts_per_day", 1.day.to_i, posts_per_day.to_s)
posts_per_day
end
before_save do
self.last_editor_id ||= user_id
if will_save_change_to_raw?
self.cooked = cook(raw, topic_id: topic_id) if !new_record?
self.baked_at = Time.zone.now
self.baked_version = BAKED_VERSION
end
end
def advance_draft_sequence
return if topic.blank? # could be deleted
DraftSequence.next!(last_editor_id, topic.draft_key) if last_editor_id
end
# TODO: move to post-analyzer?
# Determine what posts are quoted by this post
def extract_quoted_post_numbers
temp_collector = []
# Create relationships for the quotes
raw
.scan(/\[quote=\"([^"]+)"\]/)
.each do |quote|
args = parse_quote_into_arguments(quote)
# If the topic attribute is present, ensure it's the same topic
if !(args[:topic].present? && topic_id != args[:topic]) && args[:post] != post_number
temp_collector << args[:post]
end
end
temp_collector.uniq!
self.quoted_post_numbers = temp_collector
self.quote_count = temp_collector.size
end
def save_reply_relationships
add_to_quoted_post_numbers(reply_to_post_number)
return if self.quoted_post_numbers.blank?
# Create a reply relationship between quoted posts and this new post
self.quoted_post_numbers.each do |p|
post = Post.find_by(topic_id: topic_id, post_number: p)
create_reply_relationship_with(post)
end
end
# Enqueue post processing for this post
def trigger_post_process(
bypass_bump: false,
priority: :normal,
new_post: false,
skip_pull_hotlinked_images: false
)
args = {
bypass_bump: bypass_bump,
cooking_options: self.cooking_options,
new_post: new_post,
post_id: self.id,
skip_pull_hotlinked_images: skip_pull_hotlinked_images,
}
args[:image_sizes] = image_sizes if self.image_sizes.present?
args[:invalidate_oneboxes] = true if self.invalidate_oneboxes.present?
args[:queue] = priority.to_s if priority && priority != :normal
Jobs.enqueue(:process_post, args)
DiscourseEvent.trigger(:after_trigger_post_process, self)
end
def self.public_posts_count_per_day(
start_date,
end_date,
category_id = nil,
include_subcategories = false,
group_ids = nil
)
result =
public_posts.where(
"posts.created_at >= ? AND posts.created_at <= ?",
start_date,
end_date,
).where(post_type: Post.types[:regular])
if category_id
if include_subcategories
result = result.where("topics.category_id IN (?)", Category.subcategory_ids(category_id))
else
result = result.where("topics.category_id IN (?)", category_id)
end
end
if group_ids
result =
result
.joins("INNER JOIN users ON users.id = posts.user_id")
.joins("INNER JOIN group_users ON group_users.user_id = users.id")
.where("group_users.group_id IN (?)", group_ids)
end
result.group("date(posts.created_at)").order("date(posts.created_at)").count
end
def self.private_messages_count_per_day(start_date, end_date, topic_subtype)
private_posts
.with_topic_subtype(topic_subtype)
.where("posts.created_at >= ? AND posts.created_at <= ?", start_date, end_date)
.group("date(posts.created_at)")
.order("date(posts.created_at)")
.count
end
def reply_history(max_replies = 100, guardian = nil)
post_ids = DB.query_single(<<~SQL, post_id: id, topic_id: topic_id)
WITH RECURSIVE breadcrumb(id, reply_to_post_number) AS (
SELECT p.id, p.reply_to_post_number FROM posts AS p
WHERE p.id = :post_id
UNION
SELECT p.id, p.reply_to_post_number FROM posts AS p, breadcrumb
WHERE breadcrumb.reply_to_post_number = p.post_number
AND p.topic_id = :topic_id
)
SELECT id from breadcrumb
WHERE id <> :post_id
ORDER by id
SQL
# [1,2,3][-10,-1] => nil
post_ids = (post_ids[(0 - max_replies)..-1] || post_ids)
Post.secured(guardian).where(id: post_ids).includes(:user, :topic).order(:id).to_a
end
MAX_REPLY_LEVEL ||= 1000
def reply_ids(guardian = nil, only_replies_to_single_post: true)
builder = DB.build(<<~SQL)
WITH RECURSIVE breadcrumb(id, level) AS (
SELECT :post_id, 0
UNION
SELECT reply_post_id, level + 1
FROM post_replies AS r
JOIN posts AS p ON p.id = reply_post_id
JOIN breadcrumb AS b ON (r.post_id = b.id)
WHERE r.post_id <> r.reply_post_id
AND b.level < :max_reply_level
AND p.topic_id = :topic_id
), breadcrumb_with_count AS (
SELECT
id,
level,
COUNT(*) AS count
FROM post_replies AS r
JOIN breadcrumb AS b ON (r.reply_post_id = b.id)
WHERE r.reply_post_id <> r.post_id
GROUP BY id, level
)
SELECT id, MIN(level) AS level
FROM breadcrumb_with_count
/*where*/
GROUP BY id
ORDER BY id
SQL
builder.where("level > 0")
# ignore posts that aren't replies to exactly one post
# for example it skips a post when it contains 2 quotes (which are replies) from different posts
builder.where("count = 1") if only_replies_to_single_post
replies = builder.query_hash(post_id: id, max_reply_level: MAX_REPLY_LEVEL, topic_id: topic_id)
replies.each { |r| r.symbolize_keys! }
secured_ids = Post.secured(guardian).where(id: replies.map { |r| r[:id] }).pluck(:id).to_set
replies.reject { |r| !secured_ids.include?(r[:id]) }
end
def revert_to(number)
return if number >= version
post_revision = PostRevision.find_by(post_id: id, number: (number + 1))
post_revision.modifications.each do |attribute, change|
attribute = "version" if attribute == "cached_version"
write_attribute(attribute, change[0])
end
end
def self.rebake_all_quoted_posts(user_id)
return if user_id.blank?
DB.exec(<<~SQL, user_id)
WITH user_quoted_posts AS (
SELECT post_id
FROM quoted_posts
WHERE quoted_post_id IN (SELECT id FROM posts WHERE user_id = ?)
)
UPDATE posts
SET baked_version = NULL
WHERE baked_version IS NOT NULL
AND id IN (SELECT post_id FROM user_quoted_posts)
SQL
end
def seen?(user)
PostTiming.where(topic_id: topic_id, post_number: post_number, user_id: user.id).exists?
end
def index_search
Scheduler::Defer.later "Index post for search" do
SearchIndexer.index(self)
end
end
def locked?
locked_by_id.present?
end
def link_post_uploads(fragments: nil)
upload_ids = []
each_upload_url(fragments: fragments) do |src, _, sha1|
upload = nil
upload = Upload.find_by(sha1: sha1) if sha1.present?
upload ||= Upload.get_from_url(src)
# Link any video thumbnails
if SiteSetting.video_thumbnails_enabled && upload.present? &&
FileHelper.supported_video.include?(upload.extension&.downcase)
# Video thumbnails have the filename of the video file sha1 with a .png or .jpg extension.
# This is because at time of upload in the composer we don't know the topic/post id yet
# and there is no thumbnail info added to the markdown to tie the thumbnail to the topic/post after
# creation.
thumbnail =
Upload
.where("original_filename like ?", "#{upload.sha1}.%")
.order(id: :desc)
.first if upload.sha1.present?
if thumbnail.present?
upload_ids << thumbnail.id
if self.is_first_post? && !self.topic.image_upload_id
self.topic.update_column(:image_upload_id, thumbnail.id)
extra_sizes =
ThemeModifierHelper.new(
theme_ids: Theme.user_selectable.pluck(:id),
).topic_thumbnail_sizes
self.topic.generate_thumbnails!(extra_sizes: extra_sizes)
end
end
end
upload_ids << upload.id if upload.present?
end
upload_references =
upload_ids.map do |upload_id|
{
target_id: self.id,
target_type: self.class.name,
upload_id: upload_id,
created_at: Time.zone.now,
updated_at: Time.zone.now,
}
end
UploadReference.transaction do
UploadReference.where(target: self).delete_all
UploadReference.insert_all(upload_references) if upload_references.size > 0
if SiteSetting.secure_uploads?
Upload
.where(id: upload_ids, access_control_post_id: nil)
.where("id NOT IN (SELECT upload_id FROM custom_emojis)")
.update_all(access_control_post_id: self.id)
end
end
end
def update_uploads_secure_status(source:)
if Discourse.store.external?
self.uploads.each { |upload| upload.update_secure_status(source: source) }
end
end
def each_upload_url(fragments: nil, include_local_upload: true)
current_db = RailsMultisite::ConnectionManagement.current_db
upload_patterns = [
%r{/uploads/#{current_db}/},
%r{/original/},
%r{/optimized/},
%r{/uploads/short-url/[a-zA-Z0-9]+(\.[a-z0-9]+)?},
]
fragments ||= Nokogiri::HTML5.fragment(self.cooked)
selectors =
fragments.css(
"a/@href",
"img/@src",
"source/@src",
"track/@src",
"video/@poster",
"div/@data-video-src",
)
links =
selectors
.map do |media|
src = media.value
next if src.blank?
if src.end_with?("/images/transparent.png") &&
(parent = media.parent)["data-orig-src"].present?
parent["data-orig-src"]
else
src
end
end
.compact
.uniq
links.each do |src|
src = src.split("?")[0]
if src.start_with?("upload://")
sha1 = Upload.sha1_from_short_url(src)
yield(src, nil, sha1)
next
end
if src.include?("/uploads/short-url/")
host =
begin
URI(src).host
rescue URI::Error
end
next if host.present? && host != Discourse.current_hostname
sha1 = Upload.sha1_from_short_path(src)
yield(src, nil, sha1)
next
end
next if upload_patterns.none? { |pattern| src =~ pattern }
next if Rails.configuration.multisite && src.exclude?(current_db)
src = "#{SiteSetting.force_https ? "https" : "http"}:#{src}" if src.start_with?("//")
if !Discourse.store.has_been_uploaded?(src) && !Upload.secure_uploads_url?(src) &&
!(include_local_upload && src =~ %r{\A/[^/]}i)
next
end
path =
begin
URI(
UrlHelper.unencode(GlobalSetting.cdn_url ? src.sub(GlobalSetting.cdn_url, "") : src),
)&.path
rescue URI::Error
end
next if path.blank?
sha1 =
if path.include? "optimized"
OptimizedImage.extract_sha1(path)
else
Upload.extract_sha1(path) || Upload.sha1_from_short_path(path)
end
yield(src, path, sha1)
end
end
def self.find_missing_uploads(include_local_upload: true)
missing_uploads = []
missing_post_uploads = {}
count = 0
DistributedMutex.synchronize("find_missing_uploads", validity: 30.minutes) do
PostCustomField.where(name: Post::MISSING_UPLOADS).delete_all
query =
Post
.have_uploads
.joins(:topic)
.joins(
"LEFT JOIN post_custom_fields ON posts.id = post_custom_fields.post_id AND post_custom_fields.name = '#{Post::MISSING_UPLOADS_IGNORED}'",
)
.where("post_custom_fields.id IS NULL")
.select(:id, :cooked)
query.find_in_batches do |posts|
ids = posts.pluck(:id)
sha1s =
Upload
.joins(:upload_references)
.where(upload_references: { target_type: "Post" })
.where("upload_references.target_id BETWEEN ? AND ?", ids.min, ids.max)
.pluck(:sha1)
posts.each do |post|
post.each_upload_url do |src, path, sha1|
next if sha1.present? && sha1s.include?(sha1)
missing_post_uploads[post.id] ||= []
if missing_uploads.include?(src)
missing_post_uploads[post.id] << src
next
end
upload_id = nil
upload_id = Upload.where(sha1: sha1).pick(:id) if sha1.present?
upload_id ||= yield(post, src, path, sha1)
if upload_id.blank?
missing_uploads << src
missing_post_uploads[post.id] << src
end
end
end
end
missing_post_uploads =
missing_post_uploads.reject do |post_id, uploads|
if uploads.present?
PostCustomField.create!(
post_id: post_id,
name: Post::MISSING_UPLOADS,
value: uploads.to_json,
)
count += uploads.count
end
uploads.empty?
end
end
{ uploads: missing_uploads, post_uploads: missing_post_uploads, count: count }
end
def owned_uploads_via_access_control
Upload.where(access_control_post_id: self.id)
end
def image_url
raw_url = image_upload&.url
UrlHelper.cook_url(raw_url, secure: image_upload&.secure?, local: true) if raw_url
end
def cannot_permanently_delete_reason(user)
if self.deleted_by_id == user&.id && self.deleted_at >= Post::PERMANENT_DELETE_TIMER.ago
time_left =
RateLimiter.time_left(
Post::PERMANENT_DELETE_TIMER.to_i - Time.zone.now.to_i + self.deleted_at.to_i,
)
I18n.t("post.cannot_permanently_delete.wait_or_different_admin", time_left: time_left)
end
end
def mentions
PrettyText.extract_mentions(Nokogiri::HTML5.fragment(cooked))
end
private
def parse_quote_into_arguments(quote)
return {} if quote.blank?
args = HashWithIndifferentAccess.new
quote.first.scan(/([a-z]+)\:(\d+)/).each { |arg| args[arg[0]] = arg[1].to_i }
args
end
def add_to_quoted_post_numbers(num)
return if num.blank?
self.quoted_post_numbers ||= []
self.quoted_post_numbers << num
end
def create_reply_relationship_with(post)
return if post.nil? || self.deleted_at.present?
post_reply = post.post_replies.new(reply_post_id: id)
if post_reply.save
if Topic.visible_post_types.include?(self.post_type)
Post.where(id: post.id).update_all ["reply_count = reply_count + 1"]
end
end
end
end
# == Schema Information
#
# Table name: posts
#
# id :integer not null, primary key
# user_id :integer
# topic_id :integer not null
# post_number :integer not null
# raw :text not null
# cooked :text not null
# created_at :datetime not null
# updated_at :datetime not null
# reply_to_post_number :integer
# reply_count :integer default(0), not null
# quote_count :integer default(0), not null
# deleted_at :datetime
# off_topic_count :integer default(0), not null
# like_count :integer default(0), not null
# incoming_link_count :integer default(0), not null
# bookmark_count :integer default(0), not null
# score :float
# reads :integer default(0), not null
# post_type :integer default(1), not null
# sort_order :integer
# last_editor_id :integer
# hidden :boolean default(FALSE), not null
# hidden_reason_id :integer
# notify_moderators_count :integer default(0), not null
# spam_count :integer default(0), not null
# illegal_count :integer default(0), not null
# inappropriate_count :integer default(0), not null
# last_version_at :datetime not null
# user_deleted :boolean default(FALSE), not null
# reply_to_user_id :integer
# percent_rank :float default(1.0)
# notify_user_count :integer default(0), not null
# like_score :integer default(0), not null
# deleted_by_id :integer
# edit_reason :string
# word_count :integer
# version :integer default(1), not null
# cook_method :integer default(1), not null
# wiki :boolean default(FALSE), not null
# baked_at :datetime
# baked_version :integer
# hidden_at :datetime
# self_edits :integer default(0), not null
# reply_quoted :boolean default(FALSE), not null
# via_email :boolean default(FALSE), not null
# raw_email :text
# public_version :integer default(1), not null
# action_code :string
# locked_by_id :integer
# image_upload_id :bigint
# outbound_message_id :string
#
# Indexes
#
# idx_posts_created_at_topic_id (created_at,topic_id) WHERE (deleted_at IS NULL)
# idx_posts_deleted_posts (topic_id,post_number) WHERE (deleted_at IS NOT NULL)
# idx_posts_user_id_deleted_at (user_id) WHERE (deleted_at IS NULL)
# index_for_rebake_old (id) WHERE (((baked_version IS NULL) OR (baked_version < 2)) AND (deleted_at IS NULL))
# index_posts_on_id_and_baked_version (id DESC,baked_version) WHERE (deleted_at IS NULL)
# index_posts_on_id_topic_id_where_not_deleted_or_empty (id,topic_id) WHERE ((deleted_at IS NULL) AND (raw <> ''::text))
# index_posts_on_image_upload_id (image_upload_id)
# index_posts_on_topic_id_and_created_at (topic_id,created_at)
# index_posts_on_topic_id_and_percent_rank (topic_id,percent_rank)
# index_posts_on_topic_id_and_post_number (topic_id,post_number) UNIQUE
# index_posts_on_topic_id_and_reply_to_post_number (topic_id,reply_to_post_number)
# index_posts_on_topic_id_and_sort_order (topic_id,sort_order)
# index_posts_on_user_id_and_created_at (user_id,created_at)
# index_posts_user_and_likes (user_id,like_count DESC,created_at DESC) WHERE (post_number > 1)
#