Hi, I use attachment_fu and it slows down update. [Models] product has many pictures. [Update] product.update_attributes("pictures_attributes"=>{ "6"=>{"_delete"=>"0", "color_id"=>"3", "id"=>"2953"}, "11"=>{"_delete"=>"0", "color_id"=>"9", "id"=>"2921"}, "22"=>{"_delete"=>"0", "color_id"=>"24", "id"=>"2977"}, "7"=>{"_delete"=>"0", "color_id"=>"4", "id"=>"2965"}, "12"=>{"_delete"=>"0", "color_id"=>"10", "id"=>"2949"}, "23"=>{"_delete"=>"0", "color_id"=>"27", "id"=>"2969"}, "8"=>{"_delete"=>"0", "color_id"=>"5", "id"=>"2917"}, "13"=>{"_delete"=>"0", "color_id"=>"11", "id"=>"2913"}, "24"=>{"_delete"=>"0", "color_id"=>"28", "id"=>"2985"}, "9"=>{"_delete"=>"0", "color_id"=>"7", "id"=>"2989"}, "14"=>{"_deete"=>"0", "color_id"=>"12", "id"=>"2973"}, "25"=>{"_delete"=>"0", "color_id"=>"77", "id"=>"2997"}, "15"=>{"_delete"=>"0", "color_id"=>"13", "id"=>"2925"}, "0"=>{"_delete"=>"0", "color_id"=>"", "id"=>"2937"}, "16"=>{"_delete"=>"0", "color_id"=>"14", "id"=>"2941"}, "1"=>{"_delete"=>"0", "color_id"=>"", "id"=>"2981"}, "17"=>{"_delete"=>"0", "color_id"=>"14", "id"=>"1897"}, "2"=>{"_delete"=>"0", "color_id"=>"", "id"=>"2961"}, "18"=>{"_delete"=>"0", "color_id"=>"16", "id"=>"2929"}, "3"=>{"_delete"=>"0", "colo_id"=>"2", "id"=>"2909"}, "19"=>{"_delete"=>"0", "color_id"=>"17", "id"=>"2945"}, "20"=>{"_delete"=>"0", "color_id"=>"18", "id"=>"2957"}, "4"=>{"_delete"=>"0", "color_id"=>"2", "id"=>"1893"}, "10"=>{"_delete"=>"0", "color_id"=>"8", "id"=>"2993"}, "21"=>{"_delete"=>"0", "color_id"=>"21", "id"=>"2933"}, "5"=>{"_delete"=>"0", "color_id"=>"3", "id"=>"1901"} }) This takes 15 seconds. The workaround I found is product.attributes = "pictures_attributes"=>{ "6"=>{"_delete"=>"0", "color_id"=>"3", "id"=>"2953"}, "11"=>{"_delete"=>"0", "color_id"=>"9", "id"=>"2921"}, "22"=>{"_delete"=>"0", "color_id"=>"24", "id"=>"2977"}, "7"=>{"_delete"=>"0", "color_id"=>"4", "id"=>"2965"}, "12"=>{"_delete"=>"0", "color_id"=>"10", "id"=>"2949"}, "23"=>{"_delete"=>"0", "color_id"=>"27", "id"=>"2969"}, "8"=>{"_delete"=>"0", "color_id"=>"5", "id"=>"2917"}, "13"=>{"_delete"=>"0", "color_id"=>"11", "id"=>"2913"}, "24"=>{"_delete"=>"0", "color_id"=>"28", "id"=>"2985"}, "9"=>{"_delete"=>"0", "color_id"=>"7", "id"=>"2989"}, "14"=>{"_deete"=>"0", "color_id"=>"12", "id"=>"2973"}, "25"=>{"_delete"=>"0", "color_id"=>"77", "id"=>"2997"}, "15"=>{"_delete"=>"0", "color_id"=>"13", "id"=>"2925"}, "0"=>{"_delete"=>"0", "color_id"=>"", "id"=>"2937"}, "16"=>{"_delete"=>"0", "color_id"=>"14", "id"=>"2941"}, "1"=>{"_delete"=>"0", "color_id"=>"", "id"=>"2981"}, "17"=>{"_delete"=>"0", "color_id"=>"14", "id"=>"1897"}, "2"=>{"_delete"=>"0", "color_id"=>"", "id"=>"2961"}, "18"=>{"_delete"=>"0", "color_id"=>"16", "id"=>"2929"}, "3"=>{"_delete"=>"0", "colo_id"=>"2", "id"=>"2909"}, "19"=>{"_delete"=>"0", "color_id"=>"17", "id"=>"2945"}, "20"=>{"_delete"=>"0", "color_id"=>"18", "id"=>"2957"}, "4"=>{"_delete"=>"0", "color_id"=>"2", "id"=>"1893"}, "10"=>{"_delete"=>"0", "color_id"=>"8", "id"=>"2993"}, "21"=>{"_delete"=>"0", "color_id"=>"21", "id"=>"2933"}, "5"=>{"_delete"=>"0", "color_id"=>"3", "id"=>"1901"} }) product.save false This is fast but I am not sure this is the right way. Is there a better way? Thanks. Sam -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.