discourse/lib/tasks/posts.rake

desc 'Update each post with latest markdown'
task 'posts:rebake' => :environment do
  rebake_posts
end

desc 'Update each post with latest markdown and refresh oneboxes'
task 'posts:refresh_oneboxes' => :environment do
  rebake_posts invalidate_oneboxes: true
end

def rebake_posts(opts = {})
  RailsMultisite::ConnectionManagement.each_connection do |db|
    puts "Re baking post markdown for #{db} , changes are denoted with # , no change with ."

    total = Post.select([
      :id, :user_id, :cooked, :raw, :topic_id, :post_number
    ]).inject(0) do |total, post|
      begin
        cooked = post.cook(
          post.raw,
          topic_id: post.topic_id,
          invalidate_oneboxes: opts.fetch(:invalidate_oneboxes, false)
        )

        if cooked != post.cooked
          Post.exec_sql(
            'update posts set cooked = ? where id = ?', cooked, post.id
          )
          post.cooked = cooked
          putc "#"
        else
          putc "."
        end

        TopicLink.extract_from post

        # make sure we trigger the post process
        post.trigger_post_process

        total += 1
      rescue => e
        puts "\n\nFailed to bake topic_id #{post.topic_id} post_id #{post.id}\n#{e} #{e.backtrace.join("\n")} \n\n"
      end
    end

    puts "\n\n#{total} posts done!\n#{'-' * 50}\n"
  end
end