[Rails] Images with fingerprinting

Looking through the asset pipeline documentation, I was able to make everything

work as expected. Really nice!! However, not for images that we are loading using

a variable (i.e., wine.picture) which basically resolves to (bold_nine.jpg). First

question, is it possible to use (asset_path) and pass variables?

From the little bit of searching I found that (asset_path) does not support variables,

and we should use (asset_url) instead. My concern is production env and the fingerprinting

of images. Some observation:

$('#pic').attr('src', "<%= asset_url('block_nine.jpg')%>") ------correctly yields----->  $('#pic').attr('src', "/assets/block_nine-b3cebc2ed66a8605caae943eacdd358d.jpg")

$('#pic').attr('src', "<%= asset_url('" + wine.pictures + "')%>") ---------incorrectly yields-------> $('#pic').attr('src', "/" + wine.pictures + "")

Error in console:

ActionController::RoutingError (No route matches [GET] "/block_nine.jpg")

That being said,

$('#pic').attr('src', "<%= asset_url('assets/" + wine.picture + "')%>"); $('#pic').attr('src', "<%= asset_path('assets/" + wine.picture + "')%>");

both work in development and production however, I think at that point I am serving up the images from

assets and not the web server using the fingerprints as intended.

Your help is greatly appreciate,

Nick.

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