Handling associated form inputs in Grails

Associated inputs on form

// A form with associated inputs
<g:form action="seed">

 <g:each in="${teams}" status="i" var="team">

   <input type="hidden" name="teams.${i}.id" value="${team.id}">

   <input type="text" size="2" name="teams.${i}.seed" value="${team.seed}">

  </g:each>

 <g:submitButton name="update" value="Update" />

</g:form>

The controller:

log.error "params = ${params}"

params.teams.findAll {k,v -> !k.contains(".")}.each { k,v ->

       bindData(Team.get(v.id), v)

}