Rails: Responding with a blank gif, without reading from disk

# in your controller ...
BLANK_GIF = Base64.decode64("R0lGODlhAQABAPAAAAAAAAAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==")

render text: BLANK_GIF, type: 'image/gif'

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Michael Grosser, the Blog

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Rails: Responding with a blank gif, without reading from disk

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