add back buton in relation page

app/views/desktop/co_author_relations/_form.html.erb

@@ -1,2 +1,5 @@
+<% if not @co_author_relation.new_record? %>
+  <%= submit_tag "Cancel", :type => "button", class: "bt-cancel ini_input hp hh2 thmadm thmtxt" %>
+<% end %>
 <%= f.text_field :relation %>
 <%= f.submit "Save" %>

app/views/desktop/co_author_relations/_new.html.erb

@@ -1,3 +1,3 @@
-<%= form_for(@new_relation , url: desktop_co_author_relations_path, html:{"form-type"=>"ajax_form", "callback-method"=>"coauthorRelationForm"} ) do |f| %>
+<%= form_for(@co_author_relation, url: desktop_co_author_relations_path, html:{"form-type"=>"ajax_form", "callback-method"=>"coauthorRelationForm"} ) do |f| %>
   <%= render partial: 'desktop/co_author_relations/form' , locals: {:f => f}%>
 <% end %>