discourse/app/models/user_action.rb

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# frozen_string_literal: true
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class UserAction < ActiveRecord::Base
belongs_to :user
belongs_to :target_post, class_name: "Post"
belongs_to :target_topic, class_name: "Topic"
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validates_presence_of :action_type
validates_presence_of :user_id
LIKE = 1
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WAS_LIKED = 2
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NEW_TOPIC = 4
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REPLY = 5
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RESPONSE = 6
MENTION = 7
QUOTE = 9
EDIT = 11
NEW_PRIVATE_MESSAGE = 12
GOT_PRIVATE_MESSAGE = 13
SOLVED = 15
ASSIGNED = 16
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ORDER =
Hash[
*[
GOT_PRIVATE_MESSAGE,
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NEW_PRIVATE_MESSAGE,
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NEW_TOPIC,
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REPLY,
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RESPONSE,
LIKE,
WAS_LIKED,
MENTION,
QUOTE,
EDIT,
SOLVED,
ASSIGNED,
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].each_with_index.to_a.flatten
]
USER_ACTED_TYPES = [LIKE, NEW_TOPIC, REPLY, NEW_PRIVATE_MESSAGE]
def self.types
@types ||=
Enum.new(
like: 1,
was_liked: 2,
# NOTE: Previously type 3 was bookmark but this was removed when we
# changed to using the Bookmark model.
new_topic: 4,
reply: 5,
response: 6,
mention: 7,
quote: 9,
edit: 11,
new_private_message: 12,
got_private_message: 13,
solved: 15,
assigned: 16,
)
end
def self.private_types
@private_types ||= [WAS_LIKED, RESPONSE, MENTION, QUOTE, EDIT]
end
def self.last_action_in_topic(user_id, topic_id)
UserAction
.where(user_id: user_id, target_topic_id: topic_id, action_type: [RESPONSE, MENTION, QUOTE])
.order("created_at DESC")
.pick(:target_post_id)
end
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def self.stats(user_id, guardian)
# Sam: I tried this in AR and it got complex
builder = DB.build <<~SQL
SELECT action_type, COUNT(*) count
FROM user_actions a
LEFT JOIN topics t ON t.id = a.target_topic_id
LEFT JOIN posts p on p.id = a.target_post_id
LEFT JOIN posts p2 on p2.topic_id = a.target_topic_id and p2.post_number = 1
LEFT JOIN categories c ON c.id = t.category_id
/*where*/
GROUP BY action_type
SQL
builder.where("a.user_id = :user_id", user_id: user_id)
apply_common_filters(builder, user_id, guardian)
results = builder.query
results.sort! { |a, b| ORDER[a.action_type] <=> ORDER[b.action_type] }
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results
end
def self.private_messages_stats(user_id, guardian)
return unless guardian.can_see_private_messages?(user_id)
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# list the stats for: all/mine/unread/groups (topic-based)
sql = <<-SQL
SELECT COUNT(*) "all"
, SUM(CASE WHEN t.user_id = :user_id THEN 1 ELSE 0 END) "mine"
, SUM(CASE WHEN tu.last_read_post_number IS NULL OR tu.last_read_post_number < t.highest_post_number THEN 1 ELSE 0 END) "unread"
FROM topics t
LEFT JOIN topic_users tu ON t.id = tu.topic_id AND tu.user_id = :user_id
WHERE t.deleted_at IS NULL
AND t.archetype = 'private_message'
AND t.id IN (SELECT topic_id FROM topic_allowed_users WHERE user_id = :user_id)
SQL
# map is there due to count returning nil
all, mine, unread = DB.query_single(sql, user_id: user_id).map(&:to_i)
sql = <<-SQL
SELECT g.name, COUNT(*) "count"
FROM topics t
JOIN topic_allowed_groups tg ON topic_id = t.id
JOIN group_users gu ON gu.user_id = :user_id AND gu.group_id = tg.group_id
JOIN groups g ON g.id = gu.group_id
WHERE deleted_at IS NULL
AND archetype = 'private_message'
GROUP BY g.name
SQL
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result = { all: all, mine: mine, unread: unread }
DB
.query(sql, user_id: user_id)
.each { |row| (result[:groups] ||= []) << { name: row.name, count: row.count.to_i } }
result
end
def self.count_daily_engaged_users(start_date = nil, end_date = nil)
result = select(:user_id).distinct.where(action_type: USER_ACTED_TYPES)
if start_date && end_date
result = result.group("date(created_at)")
result = result.where("created_at > ? AND created_at < ?", start_date, end_date)
result = result.order("date(created_at)")
end
result.count
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end
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def self.stream_item(action_id, guardian)
stream(action_id: action_id, guardian: guardian).first
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end
NULL_QUEUED_STREAM_COLS =
%i[
cooked
uploaded_avatar_id
acting_name
acting_username
acting_user_id
target_name
target_username
target_user_id
post_number
post_id
deleted
hidden
post_type
action_type
action_code
action_code_who
action_code_path
topic_closed
topic_id
topic_archived
].map! { |s| "NULL as #{s}" }.join(", ")
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def self.stream(opts = nil)
opts ||= {}
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action_types = opts[:action_types]
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user_id = opts[:user_id]
action_id = opts[:action_id]
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guardian = opts[:guardian]
ignore_private_messages = opts[:ignore_private_messages]
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offset = opts[:offset] || 0
limit = opts[:limit] || 60
acting_username = opts[:acting_username]
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# Acting user columns. Can be extended by plugins to include custom avatar
# columns
acting_cols = ["u.id AS acting_user_id", "u.name AS acting_name"]
UserLookup.lookup_columns.each do |c|
next if c == :id || c["."]
acting_cols << "u.#{c} AS acting_#{c}"
end
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# The weird thing is that target_post_id can be null, so it makes everything
# ever so more complex. Should we allow this, not sure.
builder = DB.build <<~SQL
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SELECT
a.id,
t.title, a.action_type, a.created_at, t.id topic_id,
t.closed AS topic_closed, t.archived AS topic_archived,
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a.user_id AS target_user_id, au.name AS target_name, au.username AS target_username,
coalesce(p.post_number, 1) post_number, p.id as post_id,
p.reply_to_post_number,
pu.username, pu.name, pu.id user_id,
pu.uploaded_avatar_id,
#{acting_cols.join(", ")},
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coalesce(p.cooked, p2.cooked) cooked,
CASE WHEN coalesce(p.deleted_at, p2.deleted_at, t.deleted_at) IS NULL THEN false ELSE true END deleted,
p.hidden,
p.post_type,
p.action_code,
pc.value AS action_code_who,
pc2.value AS action_code_path,
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p.edit_reason,
t.category_id
FROM user_actions as a
JOIN topics t on t.id = a.target_topic_id
LEFT JOIN posts p on p.id = a.target_post_id
JOIN posts p2 on p2.topic_id = a.target_topic_id and p2.post_number = 1
JOIN users u on u.id = a.acting_user_id
JOIN users pu on pu.id = COALESCE(p.user_id, t.user_id)
JOIN users au on au.id = a.user_id
LEFT JOIN categories c on c.id = t.category_id
LEFT JOIN post_custom_fields pc ON pc.post_id = a.target_post_id AND pc.name = 'action_code_who'
LEFT JOIN post_custom_fields pc2 ON pc2.post_id = a.target_post_id AND pc2.name = 'action_code_path'
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/*where*/
/*order_by*/
/*offset*/
/*limit*/
SQL
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apply_common_filters(builder, user_id, guardian, ignore_private_messages)
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if action_id
builder.where("a.id = :id", id: action_id.to_i)
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else
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builder.where("a.user_id = :user_id", user_id: user_id.to_i)
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if action_types && action_types.length > 0
builder.where("a.action_type in (:action_types)", action_types: action_types)
end
if acting_username
builder.where(
"u.username_lower = :acting_username",
acting_username: acting_username.downcase,
)
end
unless SiteSetting.enable_mentions?
builder.where("a.action_type <> :mention_type", mention_type: UserAction::MENTION)
end
builder.order_by("a.created_at desc").offset(offset.to_i).limit(limit.to_i)
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end
builder.query
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end
def self.log_action!(hash)
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required_parameters = %i[action_type user_id acting_user_id]
required_parameters << :target_post_id
required_parameters << :target_topic_id
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require_parameters(hash, *required_parameters)
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transaction(requires_new: true) do
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begin
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# TODO there are conditions when this is called and user_id was already rolled back and is invalid.
# protect against dupes, for some reason this is failing in some cases
action = self.find_by(hash.select { |k, _| required_parameters.include?(k) })
return action if action
action = self.new(hash)
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action.created_at = hash[:created_at] if hash[:created_at]
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action.save!
user_id = hash[:user_id]
topic = Topic.includes(:category).find_by(id: hash[:target_topic_id])
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update_like_count(user_id, hash[:action_type], 1) if topic && !topic.private_message?
group_ids = nil
if topic && topic.category && topic.category.read_restricted
group_ids = [Group::AUTO_GROUPS[:admins]]
group_ids.concat(topic.category.groups.pluck("groups.id"))
end
if action.user
MessageBus.publish(
"/u/#{action.user.username_lower}",
action.id,
user_ids: [user_id],
group_ids: group_ids,
)
end
action
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rescue ActiveRecord::RecordNotUnique
# can happen, don't care already logged
raise ActiveRecord::Rollback
end
end
end
def self.remove_action!(hash)
require_parameters(
hash,
:action_type,
:user_id,
:acting_user_id,
:target_topic_id,
:target_post_id,
)
if action = UserAction.find_by(hash.except(:created_at))
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action.destroy
MessageBus.publish("/user/#{hash[:user_id]}", user_action_id: action.id, remove: true)
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end
if !Topic.where(id: hash[:target_topic_id], archetype: Archetype.private_message).exists?
update_like_count(hash[:user_id], hash[:action_type], -1)
end
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end
def self.synchronize_target_topic_ids(post_ids = nil, limit: nil)
# nuke all dupes, using magic
builder = DB.build <<~SQL
DELETE FROM user_actions USING user_actions ua2
/*where*/
SQL
builder.where <<~SQL
user_actions.action_type = ua2.action_type AND
user_actions.user_id = ua2.user_id AND
user_actions.acting_user_id = ua2.acting_user_id AND
user_actions.target_post_id = ua2.target_post_id AND
user_actions.target_post_id > 0 AND
user_actions.id > ua2.id
SQL
builder.where(<<~SQL, limit: limit) if limit
user_actions.target_post_id IN (
SELECT target_post_id
FROM user_actions
WHERE created_at > :limit
)
SQL
builder.where("user_actions.target_post_id in (:post_ids)", post_ids: post_ids) if post_ids
builder.exec
builder = DB.build <<~SQL
UPDATE user_actions
SET target_topic_id = (select topic_id from posts where posts.id = target_post_id)
/*where*/
SQL
builder.where("target_topic_id <> (select topic_id from posts where posts.id = target_post_id)")
builder.where("target_post_id in (:post_ids)", post_ids: post_ids) if post_ids
builder.where(<<~SQL, limit: limit) if limit
target_post_id IN (
SELECT target_post_id
FROM user_actions
WHERE created_at > :limit
)
SQL
builder.exec
end
def self.ensure_consistency!(limit = nil)
self.synchronize_target_topic_ids(nil, limit: limit)
end
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def self.update_like_count(user_id, action_type, delta)
if action_type == LIKE
UserStat.where(user_id: user_id).update_all("likes_given = likes_given + #{delta.to_i}")
elsif action_type == WAS_LIKED
UserStat.where(user_id: user_id).update_all("likes_received = likes_received + #{delta.to_i}")
end
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end
def self.apply_common_filters(builder, user_id, guardian, ignore_private_messages = false)
# We never return deleted topics in activity
builder.where("t.deleted_at is null")
# We will return deleted posts though if the user can see it
unless guardian.can_see_deleted_posts?
builder.where("p.deleted_at is null and p2.deleted_at is null")
current_user_id = -2
current_user_id = guardian.user.id if guardian.user
builder.where(
"NOT COALESCE(p.hidden, false) OR p.user_id = :current_user_id",
current_user_id: current_user_id,
)
end
visible_post_types = Topic.visible_post_types(guardian.user)
builder.where(
"COALESCE(p.post_type, p2.post_type) IN (:visible_post_types)",
visible_post_types: visible_post_types,
)
builder.where("t.visible") if guardian.user&.id != user_id && !guardian.is_staff?
filter_private_messages(builder, user_id, guardian, ignore_private_messages)
filter_categories(builder, guardian)
end
def self.filter_private_messages(builder, user_id, guardian, ignore_private_messages = false)
if !guardian.can_see_private_messages?(user_id) || ignore_private_messages || !guardian.user
builder.where("t.archetype <> :private_message", private_message: Archetype.private_message)
else
unless guardian.is_admin?
sql = <<~SQL
t.archetype <> :private_message OR
EXISTS (
SELECT 1 FROM topic_allowed_users tu WHERE tu.topic_id = t.id AND tu.user_id = :current_user_id
) OR
EXISTS (
SELECT 1 FROM topic_allowed_groups tg WHERE tg.topic_id = t.id AND tg.group_id IN (
SELECT group_id FROM group_users gu WHERE gu.user_id = :current_user_id
)
)
SQL
builder.where(
sql,
private_message: Archetype.private_message,
current_user_id: guardian.user.id,
)
end
end
builder
end
def self.filter_categories(builder, guardian)
unless guardian.is_admin?
allowed = guardian.secure_category_ids
if allowed.present?
builder.where(
"( c.read_restricted IS NULL OR
NOT c.read_restricted OR
(c.read_restricted and c.id in (:cats)) )",
cats: guardian.secure_category_ids,
)
else
builder.where("(c.read_restricted IS NULL OR NOT c.read_restricted)")
end
end
builder
end
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def self.require_parameters(data, *params)
params.each { |p| raise Discourse::InvalidParameters.new(p) if data[p].nil? }
end
end
# == Schema Information
#
# Table name: user_actions
#
# id :integer not null, primary key
# action_type :integer not null
# user_id :integer not null
# target_topic_id :integer
# target_post_id :integer
# target_user_id :integer
# acting_user_id :integer
# created_at :datetime not null
# updated_at :datetime not null
#
# Indexes
#
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# idx_unique_rows (action_type,user_id,target_topic_id,target_post_id,acting_user_id) UNIQUE
# idx_user_actions_speed_up_user_all (user_id,created_at,action_type)
# index_user_actions_on_acting_user_id (acting_user_id)
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# index_user_actions_on_action_type_and_created_at (action_type,created_at)
# index_user_actions_on_target_post_id (target_post_id)
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# index_user_actions_on_target_user_id (target_user_id) WHERE (target_user_id IS NOT NULL)
# index_user_actions_on_user_id_and_action_type (user_id,action_type)
#