Simple try & catch taglib for Grails GSP views.

TryCatchTagLib.groovy

// Simple try & catch for GSP views.
//
// Usage:
//
//	<g:try>
//		view snippet that needs to be checked
//	</g:try>
//	<g:catch>
//		alternative view code in case of errors;
//		the exception is available as ${exception}
//	</g:catch>
//
class TryCatchTagLib {

	def Try = { attrs, body ->
		try {
			out << body()
			request.exception = null
		} catch (Throwable e) {
			request.exception = e
		}
	}

	def Catch = { attrs, body ->
		if (request.exception) {
			out << body(exception: request.exception)
			request.exception = null
		}
	}
}