app/views/admin/cases/edit.html.erb
<div class='page-header'>
<div class='container'>
<h1>Reassign <%= @case_file.id%></h1>
<%= link_to 'Back to Case', case_path(@case_file), class: 'btn btn-default' %>
</div>
</div>
<div class='container'>
<div class='row'>
<div class='col-xs-6'>
<%= simple_form_for @case_file, url: case_path(@case_file) do |f| %>
<%= f.input :users, label: 'Reassign Case', as: :radio_buttons, collection: CaseFile::TYPE%>
<%end%>
</div>
</div>
</div>