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I use a call to the sanitize method every time I render some user input, but it would be much nicer if I could clean it up once before putting it into the database and avoid having to call the (relatively expensive) sanitize every time I render a page. My first thought was to just add something like: def message=(x) self[:message]=sanitize(x) end However, the sanitize helper cannot be called

I wrote a 5 line hack that you can drop into your initializers directory to enable preprocessing in Erubis. This will run code in < %=== %> brackets at compile time making views considerably faster for rails helpers that only need to be evaluated once instead of on each render (the Erubis docs mention 20-40% speed increase but obviously it depends on the amount you precompile). For example: