discourse/app/models/post_timing.rb

107 lines
3.6 KiB
Ruby

class PostTiming < ActiveRecord::Base
belongs_to :topic
belongs_to :user
validates_presence_of :post_number
validates_presence_of :msecs
def self.pretend_read(topic_id, actual_read_post_number, pretend_read_post_number)
# This is done in SQL cause the logic is quite tricky and we want to do this in one db hit
#
exec_sql("INSERT INTO post_timings(topic_id, user_id, post_number, msecs)
SELECT :topic_id, user_id, :pretend_read_post_number, 1
FROM post_timings pt
WHERE topic_id = :topic_id AND
post_number = :actual_read_post_number AND
NOT EXISTS (
SELECT 1 FROM post_timings pt1
WHERE pt1.topic_id = pt.topic_id AND
pt1.post_number = :pretend_read_post_number AND
pt1.user_id = pt.user_id
)
",
pretend_read_post_number: pretend_read_post_number,
topic_id: topic_id,
actual_read_post_number: actual_read_post_number
)
TopicUser.ensure_consistency!(topic_id)
end
# Increases a timer if a row exists, otherwise create it
def self.record_timing(args)
rows = exec_sql_row_count("UPDATE post_timings
SET msecs = msecs + :msecs
WHERE topic_id = :topic_id
AND user_id = :user_id
AND post_number = :post_number",
args)
if rows == 0
Post.where(['topic_id = :topic_id and post_number = :post_number', args]).update_all 'reads = reads + 1'
exec_sql("INSERT INTO post_timings (topic_id, user_id, post_number, msecs)
SELECT :topic_id, :user_id, :post_number, :msecs
WHERE NOT EXISTS(SELECT 1 FROM post_timings
WHERE topic_id = :topic_id
AND user_id = :user_id
AND post_number = :post_number)",
args)
end
end
def self.destroy_for(user_id, topic_ids)
PostTiming.transaction do
PostTiming.delete_all(['user_id = ? and topic_id in (?)', user_id, topic_ids])
TopicUser.delete_all(['user_id = ? and topic_id in (?)', user_id, topic_ids])
end
end
def self.process_timings(current_user, topic_id, topic_time, timings)
current_user.user_stat.update_time_read!
highest_seen = 1
timings.each do |post_number, time|
if post_number >= 0
PostTiming.record_timing(topic_id: topic_id,
post_number: post_number,
user_id: current_user.id,
msecs: time)
highest_seen = post_number.to_i > highest_seen ?
post_number.to_i : highest_seen
end
end
total_changed = 0
if timings.length > 0
total_changed = Notification.mark_posts_read(current_user, topic_id, timings.map{|t| t[0]})
end
TopicUser.update_last_read(current_user, topic_id, highest_seen, topic_time)
if total_changed > 0
current_user.reload
current_user.publish_notifications_state
end
end
end
# == Schema Information
#
# Table name: post_timings
#
# topic_id :integer not null
# post_number :integer not null
# user_id :integer not null
# msecs :integer not null
#
# Indexes
#
# post_timings_summary (topic_id,post_number)
# post_timings_unique (topic_id,post_number,user_id) UNIQUE
#