Hide supplier assignment for now.

app/overrides/spree/admin/products/_form/converted_admin_product_form_right.html.erb.deface

@@ -1,9 +1,5 @@
 <!-- insert_bottom "[data-hook='admin_product_form_right'], #admin_product_form_right[data-hook]" -->
 
 <% if can? :manage, Spree::Supplier %>
-  <%= f.field_container :supplier do %>
-    <%= f.label :supplier_id, Spree.t(:supplier) %>
-    <%= f.collection_select(:supplier_id, @suppliers, :id, :name, { include_blank: 'None' }, { class: 'select2' }) %>
-    <%= f.error_message_on :supplier %>
-  <% end %>
+  <!-- TODO allow assignment to variants -->
 <% end %>

lib/tasks/spree_sample.rake

@@ -17,7 +17,7 @@ namespace :spree_sample do
 
     puts "Linking existing line items to suppliers"
     Spree::LineItem.all.each do |li|
-      print "*" if li.product.supplier_id = @suppliers.shuffle.first.id and li.save
+      print "*" if li.product.add_supplier! @suppliers.shuffle.first.id and li.save
     end
     puts
 

spec/features/admin/products_spec.rb

@@ -0,0 +1,25 @@
+require 'spec_helper'
+
+describe 'Admin - Products', js: true do
+
+  context 'as Admin' do
+
+    xit 'should be able to change supplier' do
+      s1 = create(:supplier)
+      s2 = create(:supplier)
+      product = create :product
+      product.add_supplier! s1
+
+      login_user create(:admin_user)
+      visit spree.admin_product_path(product)
+
+      select2 s2.name, from: 'Supplier'
+      click_button 'Update'
+
+      expect(page).to have_content("Product \"#{product.name}\" has been successfully updated!")
+      expect(product.reload.suppliers.first.id).to eql(s2.id)
+    end
+
+  end
+
+end