old_contents: from django.utils.html import format_html
  
  from wagtailmodeladmin.options import ModelAdmin, wagtailmodeladmin_register
  
  from .models import Person
  
  
  class PeopleAdmin(ModelAdmin):
      model = Person
      menu_icon = 'group'
      menu_label = 'Team'
      menu_order = 300
      list_display = ('profile_photo', 'full_name', 'production', 'role')
      list_filter = ('role', 'production')
      search_fields = (
          'first_name',
          'last_name',
          'role',
          'biography',
          'production__title',
      )
  
      def full_name(self, obj): # pylint: disable=no-self-use
          return "%s %s" % (
              obj.first_name,
              obj.last_name
          )
      full_name.short_description = 'name'
      full_name.admin_order_field = 'last_name'
  
      def profile_photo(self, obj):
          return format_html(
              '<img src="{}" title="{}" alt="{}" style="height:40px">',
              obj.photo.file.url,
              obj.photo,
              "team member profile photo of " + self.full_name(obj)
          )
      profile_photo.allow_tags = True
      profile_photo.short_description = 'photo'
  
  wagtailmodeladmin_register(PeopleAdmin)
  
new_contents: from django.utils.html import format_html
  
  from wagtailmodeladmin.options import ModelAdmin, wagtailmodeladmin_register
  
  from .models import Person
  
  
  class PeopleAdmin(ModelAdmin):
      model = Person
      menu_icon = 'group'
      menu_label = 'Team'
      menu_order = 300
      list_display = ('profile_photo', 'full_name', 'production', 'role')
      list_filter = ('role', 'production')
      search_fields = (
          'first_name',
          'last_name',
          'role',
          'biography',
          'production__title',
      )
  
      def full_name(self, obj): # pylint: disable=no-self-use
          return "%s %s" % (
              obj.first_name,
              obj.last_name
          )
      full_name.short_description = 'name'
      full_name.admin_order_field = 'last_name'
  
      def profile_photo(self, obj):
          if not obj.photo:
              return
          return format_html(
              '<img src="{}" title="{}" alt="{}" style="height:40px">',
              obj.photo.file.url,
              obj.photo,
              "team member profile photo of " + self.full_name(obj)
          )
      profile_photo.allow_tags = True
      profile_photo.short_description = 'photo'
  
  wagtailmodeladmin_register(PeopleAdmin)
  
subject: Fix people list breaking due to deleted photo.