old_contents: from django.contrib import admin
  from member.models import (Member, Client, Contact, Address,
                             Referencing, Route, Client_avoid_component,
                             Client_avoid_ingredient, Option,
                             Client_option, Restriction)
  
  admin.site.register(Member)
  admin.site.register(Client)
  admin.site.register(Route)
  admin.site.register(Contact)
  admin.site.register(Address)
  admin.site.register(Referencing)
  admin.site.register(Client_avoid_component)
  admin.site.register(Client_avoid_ingredient)
  admin.site.register(Option)
  admin.site.register(Client_option)
  admin.site.register(Restriction)
  
new_contents: from django.contrib import admin
  from member.models import (Member, Client, Contact, Address,
                             Referencing, Route, Client_avoid_component,
                             Client_avoid_ingredient, Option,
                             Client_option, Restriction)
  
  from meal.models import Ingredient
  
  
  class IngredientsToAvoidInline(admin.TabularInline):
      model = Client.ingredients_to_avoid.through
  
  
  class ClientAdmin(admin.ModelAdmin):
  
      inlines = [
          IngredientsToAvoidInline
      ]
  
  
  admin.site.register(Member)
  admin.site.register(Client, ClientAdmin)
  admin.site.register(Route)
  admin.site.register(Contact)
  admin.site.register(Address)
  admin.site.register(Referencing)
  admin.site.register(Client_avoid_component)
  admin.site.register(Option)
  admin.site.register(Client_option)
  admin.site.register(Restriction)
  
subject: Add ingredients to avoid as a TabularInline to Client