discourse/app/models/user.rb

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require_dependency 'email_token'
require_dependency 'trust_level'
require_dependency 'sql_builder'
class User < ActiveRecord::Base
attr_accessible :name, :username, :password, :email, :bio_raw, :website
has_many :posts
has_many :notifications
has_many :topic_users
has_many :topics
has_many :user_open_ids
has_many :user_actions
has_many :post_actions
has_many :email_logs
has_many :post_timings
has_many :topic_allowed_users
has_many :topics_allowed, through: :topic_allowed_users, source: :topic
has_many :email_tokens
has_many :views
has_many :user_visits
has_many :invites
has_one :twitter_user_info
belongs_to :approved_by, class_name: 'User'
validates_presence_of :username
validates_presence_of :email
validates_uniqueness_of :email
validate :username_validator
validate :password_validator
before_save :cook
before_save :update_username_lower
before_save :ensure_password_is_hashed
after_initialize :add_trust_level
after_save :update_tracked_topics
after_create :create_email_token
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# Whether we need to be sending a system message after creation
attr_accessor :send_welcome_message
# This is just used to pass some information into the serializer
attr_accessor :notification_channel_position
def self.username_length
3..15
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end
def self.suggest_username(name)
# If it's an email
if name =~ /([^@]+)@([^\.]+)/
name = Regexp.last_match[1]
# Special case, if it's me @ something, take the something.
name = Regexp.last_match[2] if name == 'me'
end
name.gsub!(/^[^A-Za-z0-9]+/, "")
name.gsub!(/[^A-Za-z0-9_]+$/, "")
name.gsub!(/[^A-Za-z0-9_]+/, "_")
# Pad the length with 1s
missing_chars = User.username_length.begin - name.length
name << ('1' * missing_chars) if missing_chars > 0
# Trim extra length
name = name[0..User.username_length.end-1]
i = 1
attempt = name
while !username_available?(attempt)
suffix = i.to_s
max_length = User.username_length.end - 1 - suffix.length
attempt = "#{name[0..max_length]}#{suffix}"
i+=1
end
attempt
end
def self.create_for_email(email, opts={})
username = suggest_username(email)
if SiteSetting.call_mothership?
begin
match, available, suggestion = Mothership.nickname_match?( username, email )
username = suggestion unless match or available
rescue => e
Rails.logger.error e.message + "\n" + e.backtrace.join("\n")
end
end
user = User.new(email: email, username: username, name: username)
user.trust_level = opts[:trust_level] if opts[:trust_level].present?
user.save!
if SiteSetting.call_mothership?
begin
Mothership.register_nickname( username, email )
rescue => e
Rails.logger.error e.message + "\n" + e.backtrace.join("\n")
end
end
user
end
def self.username_available?(username)
lower = username.downcase
!User.where(username_lower: lower).exists?
end
def self.username_valid?(username)
u = User.new(username: username)
u.username_format_validator
!u.errors[:username].present?
end
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def enqueue_welcome_message(message_type)
return unless SiteSetting.send_welcome_message?
Jobs.enqueue(:send_system_message, user_id: self.id, message_type: message_type)
end
def self.suggest_name(email)
return "" unless email
name = email.split(/[@\+]/)[0]
name = name.sub(".", " ")
name.split(" ").collect{|word| word[0] = word[0].upcase; word}.join(" ")
end
def change_username(new_username)
self.username = new_username
if SiteSetting.call_mothership? and self.valid?
begin
Mothership.register_nickname( self.username, self.email )
rescue Mothership::NicknameUnavailable
return false
rescue => e
Rails.logger.error e.message + "\n" + e.backtrace.join("\n")
end
end
self.save
end
# Use a temporary key to find this user, store it in redis with an expiry
def temporary_key
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key = SecureRandom.hex(32)
$redis.setex "temporary_key:#{key}", 1.week, id.to_s
key
end
# Find a user by temporary key, nil if not found or key is invalid
def self.find_by_temporary_key(key)
user_id = $redis.get("temporary_key:#{key}")
if user_id.present?
User.where(id: user_id.to_i).first
end
end
# tricky, we need our bus to be subscribed from the right spot
def sync_notification_channel_position
@unread_notifications_by_type = nil
self.notification_channel_position = MessageBus.last_id('/notification')
end
def invited_by
used_invite = invites.where("redeemed_at is not null").includes(:invited_by).first
return nil unless used_invite.present?
used_invite.invited_by
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end
# Approve this user
def approve(approved_by)
self.approved = true
self.approved_by = approved_by
self.approved_at = Time.now
enqueue_welcome_message('welcome_approved') if save
end
def self.email_hash(email)
Digest::MD5.hexdigest(email.strip.downcase)
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end
def email_hash
User.email_hash(self.email)
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end
def unread_notifications_by_type
@unread_notifications_by_type ||= notifications.where("id > ? and read = false", seen_notification_id).group(:notification_type).count
end
def reload
@unread_notifications_by_type = nil
super
end
def unread_private_messages
return 0 if unread_notifications_by_type.blank?
return unread_notifications_by_type[Notification.Types[:private_message]] || 0
end
def unread_notifications
result = 0
unread_notifications_by_type.each do |k,v|
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result += v unless k == Notification.Types[:private_message]
end
result
end
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def saw_notification_id(notification_id)
User.update_all ["seen_notification_id = ?", notification_id], ["seen_notification_id < ?", notification_id]
end
def publish_notifications_state
MessageBus.publish("/notification",
{unread_notifications: self.unread_notifications,
unread_private_messages: self.unread_private_messages},
user_ids: [self.id] # only publish the notification to this user
)
end
# A selection of people to autocomplete on @mention
def self.mentionable_usernames
User.select(:username).order('last_posted_at desc').limit(20)
end
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def regular?
(not admin?) and (not has_trust_level?(:moderator))
end
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def password=(password)
# special case for passwordless accounts
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unless password.blank?
@raw_password = password
end
end
def confirm_password?(password)
return false unless self.password_hash && self.salt
self.password_hash == hash_password(password,self.salt)
end
def update_last_seen!
now = DateTime.now
now_date = now.to_date
# Only update last seen once every minute
redis_key = "user:#{self.id}:#{now_date.to_s}"
if $redis.setnx(redis_key, "1")
$redis.expire(redis_key, SiteSetting.active_user_rate_limit_secs)
if self.last_seen_at.nil? || self.last_seen_at.to_date < now_date
# count it
row_count = User.exec_sql('insert into user_visits(user_id,visited_at) select :user_id, :visited_at
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where not exists(select 1 from user_visits where user_id = :user_id and visited_at = :visited_at)', user_id: self.id, visited_at: now.to_date)
if row_count.cmd_tuples == 1
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User.update_all "days_visited = days_visited + 1", ["id = ? and days_visited = ?", self.id, self.days_visited]
end
end
# using a builder to avoid the AR transaction
sql = SqlBuilder.new "update users /*set*/ where id = :id"
# Keep track of our last visit
if self.last_seen_at.present? and (self.last_seen_at < (now - SiteSetting.previous_visit_timeout_hours.hours))
self.previous_visit_at = self.last_seen_at
sql.set('previous_visit_at = :prev', prev: self.previous_visit_at)
end
self.last_seen_at = now
sql.set('last_seen_at = :last', last: self.last_seen_at)
sql.exec(id: self.id)
end
end
def self.avatar_template(email)
email_hash = self.email_hash(email)
# robohash was possibly causing caching issues
# robohash = CGI.escape("http://robohash.org/size_") << "{size}x{size}" << CGI.escape("/#{email_hash}.png")
"http://www.gravatar.com/avatar/#{email_hash}.png?s={size}&r=pg&d=identicon"
end
# return null for local avatars, a template for gravatar
def avatar_template
# robohash = CGI.escape("http://robohash.org/size_") << "{size}x{size}" << CGI.escape("/#{email_hash}.png")
"http://www.gravatar.com/avatar/#{email_hash}.png?s={size}&r=pg&d=identicon"
end
# Updates the denormalized view counts for all users
def self.update_view_counts
# Update denormalized topics_entered
exec_sql "UPDATE users SET topics_entered = x.c
FROM
(SELECT v.user_id,
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COUNT(DISTINCT parent_id) AS c
FROM views AS v
WHERE parent_type = 'Topic'
GROUP BY v.user_id) AS X
WHERE x.user_id = users.id"
# Update denormalzied posts_read_count
exec_sql "UPDATE users SET posts_read_count = x.c
FROM
(SELECT pt.user_id,
COUNT(*) AS c
FROM post_timings AS pt
GROUP BY pt.user_id) AS X
WHERE x.user_id = users.id"
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end
# The following count methods are somewhat slow - definitely don't use them in a loop.
# They might need to be denormialzied
def like_count
UserAction.where(user_id: self.id, action_type: UserAction::WAS_LIKED).count
end
def post_count
posts.count
end
def flags_given_count
PostAction.where(user_id: self.id, post_action_type_id: PostActionType.FlagTypes).count
end
def flags_received_count
posts.includes(:post_actions).where('post_actions.post_action_type_id in (?)', PostActionType.FlagTypes).count
end
def private_topics_count
topics_allowed.where(archetype: Archetype.private_message).count
end
def bio_excerpt
PrettyText.excerpt(bio_cooked, 350)
end
def delete_all_posts!(guardian)
raise Discourse::InvalidAccess unless guardian.can_delete_all_posts? self
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posts.order("post_number desc").each do |p|
if p.post_number == 1
p.topic.destroy
else
p.destroy
end
end
end
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def is_banned?
!banned_till.nil? && banned_till > DateTime.now
end
# Use this helper to determine if the user has a particular trust level.
# Takes into account admin, etc.
def has_trust_level?(level)
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raise "Invalid trust level #{level}" unless TrustLevel.Levels.has_key?(level)
# Admins can do everything
return true if admin?
# Otherwise compare levels
(self.trust_level || TrustLevel.Levels[:new]) >= TrustLevel.Levels[level]
end
def guardian
Guardian.new(self)
end
def username_format_validator
validator = UsernameValidator.new(username)
unless validator.valid_format?
validator.errors.each { |e| errors.add(:username, e) }
end
end
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def email_confirmed?
email_tokens.where(email: self.email, confirmed: true).present?
end
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protected
def cook
if self.bio_raw.present?
self.bio_cooked = PrettyText.cook(bio_raw) if bio_raw_changed?
else
self.bio_cooked = nil
end
end
def update_tracked_topics
if self.auto_track_topics_after_msecs_changed?
if auto_track_topics_after_msecs < 0
User.exec_sql('update topic_users set notification_level = ?
where notifications_reason_id is null and
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user_id = ?' , TopicUser::NotificationLevel::REGULAR , self.id)
else
User.exec_sql('update topic_users set notification_level = ?
where notifications_reason_id is null and
user_id = ? and
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total_msecs_viewed < ?' , TopicUser::NotificationLevel::REGULAR , self.id, auto_track_topics_after_msecs)
User.exec_sql('update topic_users set notification_level = ?
where notifications_reason_id is null and
user_id = ? and
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total_msecs_viewed >= ?' , TopicUser::NotificationLevel::TRACKING , self.id, auto_track_topics_after_msecs)
end
end
end
def create_email_token
email_tokens.create(email: self.email)
end
def ensure_password_is_hashed
if @raw_password
self.salt = SecureRandom.hex(16)
self.password_hash = hash_password(@raw_password, salt)
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end
end
def hash_password(password, salt)
PBKDF2.new(:password => password, :salt => salt, :iterations => Rails.configuration.pbkdf2_iterations).hex_string
end
def add_trust_level
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self.trust_level ||= SiteSetting.default_trust_level
rescue ActiveModel::MissingAttributeError
# Ignore it, safely - see http://www.tatvartha.com/2011/03/activerecordmissingattributeerror-missing-attribute-a-bug-or-a-features/
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end
def update_username_lower
self.username_lower = username.downcase
end
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def username_validator
username_format_validator || begin
lower = username.downcase
if username_changed? && User.where(username_lower: lower).exists?
return errors.add(:username, I18n.t(:'user.username.unique'))
end
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end
end
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def password_validator
if @raw_password
return errors.add(:password, "must be 6 letters or longer") if @raw_password.length < 6
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end
end
end