bind domain class by unique name
data-binding, grails
Solution
I don't think this has anything to do with retention policy, dynamic finders, withTransaction or withSession. The issue is that the @BindUsing closure is only triggered for the "user" property if there is a request parameter named "user". The description suggests that there probably isn't one in play in this scenario.
Problem
My Grails app has the following command object ``` class MyCommand { @BindUsing({ obj, source -> User.findByUsername(source.username) }) User user // other stuff not relevant to this question } ``` The request parameters includes a `username` which uniquely identifies the `User`. I've added the `@BindUsing` annotation in order to bind the `user` property of the command object to the corresponding `User` instance. However, after databinding has completed, the `user` field is null, even though the `username` parameter is correct. What am I doing wrong?