no message

store/admin.py

@@ -36,6 +36,7 @@ class AttributeAdmin(admin.ModelAdmin):
 
 
 class ImageInProductInline(admin.TabularInline):
+
     def render_image(self, obj):
         return mark_safe("""<img src="/static/{0}" width='200' />""".format(
             obj.image.url))
@@ -50,7 +51,7 @@ class ImageInProductInline(admin.TabularInline):
 
 class ProductVariationInline(admin.TabularInline):
     model = ProductVariation
-    fields = ['variation', 'price', 'in_stock']
+    fields = ['variation', 'article', 'price', 'in_stock']
     extra = 1