Marcos Fábio Pereira has just published a step-by-step guide for using the slick JasperGrails plugin in the Racetrack application (originally developed in Getting Started with Grails). The tutorial includes examples of generating a PDF of all the races in the app, exporting an Excel spreadsheet listing all the registrations for a race, and the impressively concise bits of code necessary to get this new tastiness up and running.

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Nicely done, Marcos!