tasks/paperclip_tasks.rake in jcnetdev-paperclip-1.0.20080704 vs tasks/paperclip_tasks.rake in jcnetdev-paperclip-1.1

@@ -12,27 +12,64 @@
   else
     @klass.attachment_definitions.keys
   end
 end
 
+def for_all_attachments
+  klass = obtain_class
+  names = obtain_attachments
+  ids   = klass.connection.select_values("SELECT id FROM #{klass.table_name}")
+
+  ids.each do |id|
+    instance = klass.find(id)
+    names.each do |name|
+      result = if instance.send("#{ name }?")
+                 yield(instance, name)
+               else
+                 true
+               end
+      print result ? "." : "x"; $stdout.flush
+    end
+  end
+  puts " Done."
+end
+
 namespace :paperclip do
-  desc "Regenerates thumbnails for a given CLASS (and optional ATTACHMENT)"
-  task :refresh => :environment do
-    klass     = obtain_class
-    names     = obtain_attachments
-    instances = klass.find(:all)
-    
-    puts "Regenerating thumbnails for #{instances.length} instances of #{klass.name}:"
-    instances.each do |instance|
-      names.each do |name|
-        result = if instance.send("#{ name }?")
-          instance.send(name).reprocess!
-          instance.send(name).save
+  desc "Refreshes both metadata and thumbnails."
+  task :refresh => ["paperclip:refresh:metadata", "paperclip:refresh:thumbnails"]
+
+  namespace :refresh do
+    desc "Regenerates thumbnails for a given CLASS (and optional ATTACHMENT)."
+    task :thumbnails => :environment do
+      for_all_attachments do |instance, name|
+        instance.send(name).reprocess!
+      end
+    end
+
+    desc "Regenerates content_type/size metadata for a given CLASS (and optional ATTACHMENT)."
+    task :metadata => :environment do
+      for_all_attachments do |instance, name|
+        if file = instance.send(name).to_file
+          instance.send("#{name}_file_name=", instance.send("#{name}_file_name").strip)
+          instance.send("#{name}_content_type=", file.content_type.strip)
+          instance.send("#{name}_file_size=", file.size) if instance.respond_to?("#{name}_file_size")
+          instance.save(false)
         else
           true
         end
-        print result ? "." : "x"; $stdout.flush
       end
     end
-    puts " Done."
+  end
+
+  desc "Cleans out invalid attachments. Useful after you've added new validations."
+  task :clean => :environment do
+    for_all_attachments do |instance, name|
+      instance.send(name).send(:validate)
+      if instance.send(name).valid?
+        true
+      else
+        instance.send("#{name}=", nil)
+        instance.save
+      end
+    end
   end
 end