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# File 'lib/file_upload_cache/cached_attributes.rb', line 7
def cached_file_for(field)
attr_accessor :"#{field}_cache_id", :"cached_#{field}"
define_method "#{field}_with_cache=" do |value|
instance_variable_set("@#{field}_original", value)
self.send("#{field}_without_cache=", value)
end
alias_method_chain :"#{field}=", :cache
before_validation lambda {
original = self.instance_variable_get("@#{field}_original")
original.rewind if original && original.respond_to?(:rewind)
self.send("cached_#{field}=", CachedFile.store(original)) if original.respond_to?(:read)
if( ! self.send("#{field}_cache_id").blank? && original.blank? )
cached_file = CachedFile.find(self.send("#{field}_cache_id"))
if cached_file
FileUploadCache::Tempfile.for(cached_file.read, cached_file.original_filename) do |tf|
self.send("#{field}=", tf)
self.send("cached_#{field}=", cached_file)
end
end
end
}
end
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