discourse/lib/tasks/categories.rake

# frozen_string_literal: true

task "categories:move_topics", [:from_category, :to_category] => [:environment] do |_, args|
  from_category_id = args[:from_category]
  to_category_id = args[:to_category]

  if !from_category_id || !to_category_id
    puts "ERROR: Expecting categories:move_topics[from_category_id,to_category_id]"
    exit 1
  end

  from_category = Category.find(from_category_id)
  to_category = Category.find(to_category_id)

  if from_category.present? && to_category.present?
    puts "Moving topics from #{from_category.slug} to #{to_category.slug}..."

    Topic
      .where(category_id: from_category.id)
      .where.not(id: from_category.topic_id)
      .update_all(category_id: to_category.id)

    from_category.update_attribute(:topic_count, 0)

    puts "Updating category stats..."
    Category.update_stats
  end

  puts "", "Done!", ""
end

task "categories:create_definition" => :environment do
  puts "Creating category definitions"
  puts

  Category.where(topic_id: nil).each(&:create_category_definition)

  puts "", "Done!", ""
end

def print_status(current, max)
  print "\r%9d / %d (%5.1f%%)" % [current, max, ((current.to_f / max.to_f) * 100).round(1)]
end

desc "Output a list of categories"
task "categories:list" => :environment do
  categories = Category.where(parent_category_id: nil).order(:slug).pluck(:id, :slug)
  puts "id category-slug"
  puts "-- -----------------"
  categories.each do |c|
    puts "#{c[0]} #{c[1]}"
    Category.where(parent_category_id: c[0]).order(:slug).pluck(:id, :slug).each do |s|
      puts "     #{s[0]} #{s[1]}"
    end
  end
end