discourse/app/services/user_destroyer.rb

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# Responsible for destroying a User record
class UserDestroyer
class PostsExistError < RuntimeError; end
def initialize(actor)
@actor = actor
raise Discourse::InvalidParameters.new('acting user is nil') unless @actor and @actor.is_a?(User)
@guardian = Guardian.new(actor)
end
# Returns false if the user failed to be deleted.
# Returns a frozen instance of the User if the delete succeeded.
def destroy(user, opts={})
raise Discourse::InvalidParameters.new('user is nil') unless user and user.is_a?(User)
@guardian.ensure_can_delete_user!(user)
raise PostsExistError if !opts[:delete_posts] && user.post_count != 0
User.transaction do
if opts[:delete_posts]
user.posts.each do |post|
if opts[:block_urls]
post.topic_links.each do |link|
unless link.internal or Oneboxer.oneboxer_exists_for_url?(link.url)
ScreenedUrl.watch(link.url, link.domain, ip_address: user.ip_address).try(:record_match!)
end
end
end
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PostDestroyer.new(@actor.staff? ? @actor : Discourse.system_user, post).destroy
if post.topic and post.post_number == 1
Topic.unscoped.where(id: post.topic.id).update_all(user_id: nil)
end
end
end
user.post_actions.each do |post_action|
post_action.remove_act!(Discourse.system_user)
end
user.destroy.tap do |u|
if u
if opts[:block_email]
b = ScreenedEmail.block(u.email, ip_address: u.ip_address)
b.record_match! if b
end
if opts[:block_ip] && u.ip_address
b.record_match! if b = ScreenedIpAddress.watch(u.ip_address)
if u.registration_ip_address && u.ip_address != u.registration_ip_address
b.record_match! if b = ScreenedIpAddress.watch(u.registration_ip_address)
end
end
Post.with_deleted.where(user_id: user.id).update_all("user_id = NULL")
# If this user created categories, fix those up:
categories = Category.where(user_id: user.id)
categories.each do |c|
c.user_id = Discourse.system_user.id
c.save!
if topic = Topic.with_deleted.where(id: c.topic_id).first
topic.try(:recover!)
topic.user_id = Discourse.system_user.id
topic.save!
end
end
StaffActionLogger.new(@actor == user ? Discourse.system_user : @actor).log_user_deletion(user, opts.slice(:context))
DiscourseHub.unregister_username(user.username) if SiteSetting.call_discourse_hub?
MessageBus.publish "/file-change", ["refresh"], user_ids: [user.id]
end
end
end
end
end