Split up the representative from the thumbnail partial for easier ove…

…rride of one or the other

app/views/collections/_form.html.erb

@@ -10,7 +10,7 @@
   <%= render 'form_descriptive_fields', curation_concern: @collection, f: f %>
   <%= render 'form_permission', f: f %>
 
-  <%= render "curation_concerns/base/form_representative_image", f: f %>
+  <%= render "curation_concerns/base/form_media", f: f %>
 
   <div class="row">
     <div class="col-md-12 form-actions">

app/views/curation_concerns/base/_form_media.html.erb

@@ -0,0 +1,4 @@
+<% if f.object.persisted? && f.object.member_ids.present? %>
+  <%= render 'form_representative', f: f %>
+  <%= render 'form_thumbnail', f: f %>
+<% end %>

app/views/curation_concerns/base/_form_representative.html.erb

@@ -0,0 +1,12 @@
+  <div class="row">
+    <div class="col-md-12">
+      <fieldset id="representative-media">
+        <legend>
+          Representative Media
+        </legend>
+        <p>Select the file with media that represents this <%= f.object.human_readable_type %>.</p>
+        <%= f.select :representative_id, @form.select_files, {}, { class: 'form-control' } %>
+      </fieldset>
+    </div>
+  </div>
+

app/views/curation_concerns/base/_form_supplementary_fields.html.erb

@@ -1,5 +1,5 @@
 <%= render "form_files_and_links", f: f %>
-<%= render "form_representative_image", f: f %>
+<%= render "form_media", f: f %>
 
 <div class="row with-headroom">
   <div class="col-md-12">

app/views/curation_concerns/base/_form_thumbnail.html.erb

@@ -0,0 +1,12 @@
+  <div class="row">
+    <div class="col-md-12">
+      <fieldset id="representative-image">
+        <legend>
+           Thumbnail
+        </legend>
+        <p>Select the file to be used as the thumbnail for this <%= f.object.human_readable_type %>.</p>
+        <%= f.select :thumbnail_id, @form.select_files, {}, { class: 'form-control' } %>
+      </fieldset>
+    </div>
+  </div>
+