discourse/lib/tasks/images.rake

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task "images:compress" => :environment do
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io = ImageOptim.new
images = Dir.glob("#{Rails.root}/app/**/*.png")
image_sizes = Hash[*images.map{|i| [i,File.size(i)]}.to_a.flatten]
io.optimize_images!(images) do |name, optimized|
if optimized
new_size = File.size(name)
puts "#{name} => from: #{image_sizes[name.to_s]} to: #{new_size}"
end
end
end
desc "updates reverse index of image uploads"
task "images:reindex" => :environment do
RailsMultisite::ConnectionManagement.each_connection do |db|
puts "Reindexing #{db}"
Post.select([:id, :cooked]).find_each do |p|
doc = Nokogiri::HTML::fragment(p.cooked)
doc.search("img").each do |img|
src = img['src']
if src.present? && Upload.has_been_uploaded?(src) && m = Upload.uploaded_regex.match(src)
begin
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PostUpload.create({ post_id: p.id, upload_id: m[:upload_id] })
rescue ActiveRecord::RecordNotUnique
end
end
end
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putc "."
end
end
puts "\ndone."
end
desc "clean orphan uploaded files"
task "images:clean_orphans" => :environment do
RailsMultisite::ConnectionManagement.each_connection do |db|
puts "Cleaning up #{db}"
# ligthweight safety net to prevent users from wiping all their uploads out
if PostUpload.count == 0 && Upload.count > 0
puts "The reverse index is empty. Make sure you run the `images:reindex` task"
next
end
Upload.joins("LEFT OUTER JOIN post_uploads ON uploads.id = post_uploads.upload_id")
.where("post_uploads.upload_id IS NULL")
.find_each do |u|
u.destroy
putc "."
end
end
puts "\ndone."
end