Initializing a jQuery UI autocomplete with data from a Rails array

_edit.html.erb

<script type="text/javascript">
  // Trying to help @gedankenstuecke here. A bit hard because I don’t speak Rails (neither Ruby) and can’t try live what the output looks like.
  $(function () {
    $("#<%=p.object.phenotype_id.to_json%>").autocomplete({
      source: <%=raw(Phenotype.find_by_id(p.object.phenotype_id).known_phenotypes.to_json)%>
    });
  });
</script>

Just needed to be fed to raw() to produce conform code