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Script for merging existing discourse users
module DiscourseUsersMerger
class Merger
def merge(target_username, source_username)
raise "User to merge and target user can't be the same" if target_username == source_username
target_user = User.find_by_username!(target_username)
source_user = User.find_by_username!(source_username)
puts "About to merge #{source_username} (#{source_user.email}) into #{target_username} (#{target_user.email})"
puts "#{source_user.topics.count} topics with #{source_user.posts.count} posts will be moved. Ok to continue? (y/n)"
continue = STDIN.gets.chomp.downcase == 'y'
perform_merge(target_user, source_user) if continue
end
private
def perform_merge(target_user, source_user)
puts "Merging..."
source_user.posts.update_all user_id: target_user.id
source_user.topics.update_all user_id: target_user.id
source_user.user_actions.each { |ua| ua.update_column(:user_id, target_user.id) rescue puts "error #{ua.inspect}" }
puts "Deleting #{source_user.email}..."
source_user.reload.destroy
puts "Updating topics statistics"
target_user.topics.each { |topic| topic.update_statistics }
target_user.user_stat.update_topic_reply_count
create_user_actions(target_user)
end
def create_user_actions(target_user)
target_user.user_actions.where("action_type in (?)", [4, 5]).destroy_all
UserAction.record_timestamps = false
target_user.topics.each { |topic| create_user_action_for_topic(target_user, topic) }
target_user.posts.each { |post| create_user_action_for_post(post, target_user) }
end
def create_user_action_for_post(post, target_user)
UserAction.create!(user_id: target_user.id, target_topic_id: post.topic.id, target_post_id: post.id, action_type: 5,
created_at: post.created_at, updated_at: post.updated_at, acting_user_id: target_user.id) rescue puts "Error"
end
def create_user_action_for_topic(target_user, topic)
UserAction.create!(user_id: target_user.id, target_topic_id: topic.id, target_post_id: -1, action_type: 4,
created_at: topic.created_at, updated_at: topic.updated_at, acting_user_id: target_user.id) rescue puts "Error"
end
end
end
raise "Usage: 'discourse_users_merger <target_username> <source_username>'" unless ARGV.length==2
DiscourseUsersMerger::Merger.new.merge(ARGV[0], ARGV[1])
@brucellino

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@brucellino brucellino commented Oct 13, 2015

Can you please explain where and how this script is to be executed ?

@reitzig

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@reitzig reitzig commented Feb 1, 2018

From here:

Just copy it to app/lib. Open rails console and type the last line of that gist (change username)

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