old_contents: # -*- coding: utf-8 -*-
  from django.contrib import admin
  from .models import Crash
  
  class CrashAdmin(admin.ModelAdmin):
      search_fields = ('report',)
      list_display = ('application', 'build',
                      'crdate', 'tstamp',
                      'is_solved', 'is_obsolete')
      list_filter = ('application', 'build',
                     'is_solved', 'is_obsolete',
                     'crdate', 'tstamp')
      date_hierarchy = 'crdate'
  
  admin.site.register(Crash, CrashAdmin)
  
new_contents: # -*- coding: utf-8 -*-
  from django.contrib import admin
  from .models import Crash
  
  class CrashAdmin(admin.ModelAdmin):
      search_fields = ('report',)
      list_display = ('application', 'build',
                      'crdate', 'tstamp',
                      'is_solved', 'is_obsolete')
      list_filter = ('application', 'build',
                     'is_solved', 'is_obsolete',
                     'crdate', 'tstamp')
      #date_hierarchy = 'crdate'
  
  admin.site.register(Crash, CrashAdmin)
  
subject: Disable date_hierarchy for now since it requires tzinfo in MySQL