app/views/studies/asset_groups/edit.html.erb
<div class="page-header"><h1>Editing asset group</h1></div>
<%= form_for [@study,@asset_group], method: :put do |f| %>
<%= render_error_messages(@asset_group) %>
<p>
Name: <%= f.text_field :name %>
</p>
<p>
Study: <%= f.collection_select :study_id, Study.all, :id, :name %>
</p>
<p>
<%= f.submit "Update" %>
</p>
<% end %>
<%= link_to 'Show', study_asset_group_path(@study, @asset_group) %> |
<%= link_to 'Back', study_asset_groups_path(@study) %>