Created
May 12, 2010 17:23
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def obtain_class | |
class_name = ENV['CLASS'] || ENV['class'] | |
raise "Must specify CLASS" unless class_name | |
@klass = Object.const_get(class_name) | |
end | |
def obtain_attachments | |
name = ENV['ATTACHMENT'] || ENV['attachment'] | |
raise "Class #{@klass.name} has no attachments specified" unless @klass.respond_to?(:attachment_definitions) | |
if !name.blank? && @klass.attachment_definitions.keys.include?(name) | |
[ name ] | |
else | |
@klass.attachment_definitions.keys | |
end | |
end | |
def for_all_attachments | |
klass = obtain_class | |
names = obtain_attachments | |
ids = klass.connection.select_values(klass.send(:construct_finder_sql, :select => 'id')) | |
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 "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 | |
errors = [] | |
for_all_attachments do |instance, name| | |
result = instance.send(name).reprocess! | |
errors << [instance.id, instance.errors] unless instance.errors.blank? | |
result | |
end | |
errors.each{|e| puts "#{e.first}: #{e.last.full_messages.inspect}" } | |
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 | |
end | |
end | |
end | |
desc "Regenerates all." | |
task :all => :environment do | |
for file in Dir.glob(RAILS_ROOT + '/app/models/*.rb') | |
file_content = '' | |
f = File.open(file, "r") | |
f.each_line do |line| | |
file_content += line | |
end | |
model = File.basename(file, '.*').camelize.constantize | |
if file_content =~ /has_attached_file/m | |
puts 'Refreshing model ' + model.to_s | |
puts `rake paperclip:refresh class=#{model.to_s}` | |
end | |
end | |
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 |
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