Merge pull request #6834 from andrewpbrett/fix-variants-with-no-products

Remove variants with no product

db/migrate/20210202052337_migrate_variant_unit_values.rb

@@ -1,5 +1,6 @@
 class MigrateVariantUnitValues < ActiveRecord::Migration
   def up
+    Spree::Variant.where(product_id: nil).destroy_all
     Spree::Variant.where(unit_value: [nil, Float::NAN]).find_each do |variant|
       variant.unit_value = 1
       variant.save

db/schema.rb

@@ -11,8 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-
-ActiveRecord::Schema.define(version: 20210203215049) do
+ActiveRecord::Schema.define(version: 20210203214304) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"