old_contents: # -*- coding: utf-8 -*-
  from __future__ import unicode_literals
  
  from rest_framework import serializers
  from shop.serializers.bases import ProductSerializer
  
  
  class ProductSummarySerializer(ProductSerializer):
      """
      Default serializer to create a summary from our Product model. This summary then is used to
      render various list views, such as the catalog- and the cart-, and the list of ordered items.
      In case the Product model is polymorphic, this shall serialize the smallest common denominator
      of all product information.
      """
      media = serializers.SerializerMethodField(
          help_text="Returns a rendered HTML snippet containing a sample image among other elements",
      )
  
      caption = serializers.SerializerMethodField(
          help_text="Returns the content from caption field if available",
      )
  
      class Meta(ProductSerializer.Meta):
          fields = ['id', 'product_name', 'product_url', 'product_model', 'price', 'media', 'caption']
  
      def get_media(self, product):
          return self.render_html(product, 'media')
  
      def get_caption(self, product):
          return getattr(product, 'caption', None)
  
new_contents: # -*- coding: utf-8 -*-
  from __future__ import unicode_literals
  
  from rest_framework import serializers
  from shop.serializers.bases import ProductSerializer
  
  
  class ProductSummarySerializer(ProductSerializer):
      """
      Default serializer to create a summary from our Product model. This summary then is used to
      render various list views, such as the catalog-, the cart-, and the list of ordered items.
      In case the Product model is polymorphic, this shall serialize the smallest common denominator
      of all product information.
      """
      media = serializers.SerializerMethodField(
          help_text="Returns a rendered HTML snippet containing a sample image among other elements",
      )
  
      caption = serializers.SerializerMethodField(
          help_text="Returns the content from caption field if available",
      )
  
      class Meta(ProductSerializer.Meta):
          fields = ['id', 'product_name', 'product_url', 'product_model', 'price', 'media', 'caption']
  
      def get_media(self, product):
          return self.render_html(product, 'media')
  
      def get_caption(self, product):
          return getattr(product, 'caption', None)
  
subject: fix typo