text: 
  from django import forms
  from django.contrib import admin
  from django.utils.translation import ugettext_lazy as _
  
  from comments.models import Comment, CommentAnswer
  
  
  class CommentForm(forms.ModelForm):
  
      text = forms.CharField(
          label=_('Comment'), widget=forms.Textarea(attrs={'readonly': True}))
  
      answer_text = forms.CharField(label=_('Answer'), widget=forms.Textarea)
  
      def __init__(self, *args, **kwargs):
          answer = kwargs['instance'].answer
          if answer:
              kwargs['initial'] = {'answer_text': answer.text}
          super(CommentForm, self).__init__(*args, **kwargs)
  
      class Meta:
          model = Comment
          fields = ['text']
  
  
  class CommentsAdmin(admin.ModelAdmin):
  
      form = CommentForm
  
      list_display = ['id', 'name', 'email', 'created', 'is_active', 'has_answer']
      list_editable = ['is_active']
      list_filter = ['is_active']
      list_display_links = ['id', 'name']
  
      def has_answer(self, obj):
          return bool(obj.answer)
  
      has_answer.boolean = True
      has_answer.short_description = _('Has answer')
  
      def has_add_permission(self, request):
          return False
  
      def save_model(self, request, obj, form, change):
          answer = obj.answer if obj.answer else CommentAnswer()
          answer.user = request.user
          answer.text = form.cleaned_data['answer_text']
          answer.save()
  
          obj.answer = answer
          obj.save()
  
  
  admin.site.register(Comment, CommentsAdmin)
  