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Something that I have come across in my experimentation with Grails is the need to have UI elements in the screen that map to more complex elements in the domain model or things that are not stored in the database. I really like the automagic generation of view elements in Grails GSP files, and have used transient properties to generate views that allow for uploading files. In this post, I will discuss how I used the transient property to enable image uploading in Grails.