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module ActionDispatch
module Http
# Models uploaded files.
#
# The actual file is accessible via the +tempfile+ accessor, though some
# of its interface is available directly for convenience.
#
# Uploaded files are temporary files whose lifespan is one request. When
# the object is finalized Ruby unlinks the file, so there is not need to
# clean them with a separate maintenance task.
class UploadedFile
# The basename of the file in the client.
attr_accessor :original_filename
# A string with the MIME type of the file.
attr_accessor :content_type
# A +Tempfile+ object with the actual uploaded file. Note that some of
# its interface is available directly.
attr_accessor :tempfile
# A string with the headers of the multipart request.
attr_accessor :headers
def initialize(hash) # :nodoc:
@tempfile = hash[:tempfile]
raise(ArgumentError, ':tempfile is required') unless @tempfile
@original_filename = encode_filename(hash[:filename])
@content_type = hash[:type]
@headers = hash[:head]
end
# Shortcut for +tempfile.read+.
def read(length=nil, buffer=nil)
@tempfile.read(length, buffer)
end
# Shortcut for +tempfile.open+.
def open
@tempfile.open
end
# Shortcut for +tempfile.close+.
def close(unlink_now=false)
@tempfile.close(unlink_now)
end
# Shortcut for +tempfile.path+.
def path
@tempfile.path
end
# Shortcut for +tempfile.rewind+.
def rewind
@tempfile.rewind
end
# Shortcut for +tempfile.size+.
def size
@tempfile.size
end
# Shortcut for +tempfile.eof?+.
def eof?
@tempfile.eof?
end
private
def encode_filename(filename)
# Encode the filename in the utf8 encoding, unless it is nil
filename.force_encoding(Encoding::UTF_8).encode! if filename
end
end
module Upload # :nodoc:
# Replace file upload hash with UploadedFile objects
# when normalize and encode parameters.
def normalize_encode_params(value)
if Hash === value && value.has_key?(:tempfile)
UploadedFile.new(value)
else
super
end
end
private :normalize_encode_params
end
end
end
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