old_contents: from django.contrib import admin
  from .models import StockState
  
  
  class StockStateAdmin(admin.ModelAdmin):
      model = StockState
      list_display = [
          'section_id',
          'case_id',
          'product_id',
          'stock_on_hand',
          'daily_consumption',
          'last_modified_date'
      ]
      list_filter = [
          'section_id',
          'case_id',
          'product_id',
          'last_modified_date'
      ]
  
  admin.site.register(StockState, StockStateAdmin)
  
new_contents: from django.contrib import admin
  from .models import StockState
  
  
  class StockStateAdmin(admin.ModelAdmin):
      model = StockState
      list_display = [
          'section_id',
          'case_id',
          'product_id',
          'stock_on_hand',
          'daily_consumption',
          'last_modified_date'
      ]
      list_filter = [
          'section_id',
          'last_modified_date'
      ]
      search_fields = ["case_id", "product_id"]
  
  
  admin.site.register(StockState, StockStateAdmin)
  
subject: Use product/case id's in search rather than filter