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File receiver

If upload has failed (like file size limit, exception is raised)

Methods

isUploaded()

Determines if the file object is in the request

receive()

Tries to handle the upload request. If the file is not uploaded, returns false. If the file is present in the request, it will create the save object.

If the file in the request is chunk, it will create the ChunkSave object, otherwise creates the SingleSave which does nothing at this moment.