old_contents: from pos.models.crew import Crew
  
  from rest_framework import serializers
  
  
  class CrewSerializer(serializers.ModelSerializer):
  
      class Meta:
          model = Crew
          fields = ('name', 'max_credit', 'card')
  
new_contents: from pos.models.crew import Crew
  
  from rest_framework import serializers
  
  
  class CrewSerializer(serializers.ModelSerializer):
  
      class Meta:
          model = Crew
          fields = ('first_name', 'last_name', 'credit', 'card')
  
subject: rename crew fields in the api