old_contents: from django.contrib.flatpages.admin import FlatPageAdmin, FlatpageForm
  from django.contrib.flatpages.models import FlatPage
  from django import forms
  from django.contrib import admin
  from django.db import models
  from flatblocks.models import FlatBlock
  from flatblocks.forms import FlatBlockForm
  from flatblocks.admin import FlatBlockAdmin
  from tinymce.widgets import TinyMCE
  
  
  class CustomFlatpageForm(FlatpageForm):
      def __init__(self, *args, **kwargs):
          super(CustomFlatpageForm, self).__init__(*args, **kwargs)
          self.fields['content'].widget = TinyMCE(
              attrs={'cols': 120, 'rows': 30})
  
  
  class CustomFlatPageAdmin(FlatPageAdmin):
      form = CustomFlatpageForm
  
  
  admin.site.unregister(FlatPage)
  admin.site.register(FlatPage, CustomFlatPageAdmin)
  
  
  class CustomFlatBlockForm(FlatBlockForm):
      def __init__(self, *args, **kwargs):
          super(CustomFlatBlockForm, self).__init__(*args, **kwargs)
          self.fields['content'].widget = TinyMCE(
              attrs={'cols': 120, 'rows': 30})
  
  
  class CustomFlatBlockAdmin(FlatBlockAdmin):
      form = CustomFlatBlockForm
  
  
  admin.site.unregister(FlatBlock)
  admin.site.register(FlatBlock, CustomFlatBlockAdmin)
  
new_contents: from django.contrib.flatpages.admin import FlatPageAdmin, FlatpageForm
  from django.contrib.flatpages.models import FlatPage
  from django import forms
  from django.contrib import admin
  from django.db import models
  from flatblocks.models import FlatBlock
  from flatblocks.forms import FlatBlockForm
  from flatblocks.admin import FlatBlockAdmin
  from tinymce.widgets import TinyMCE
  
  
  class CustomFlatpageForm(FlatpageForm):
      def __init__(self, *args, **kwargs):
          super(CustomFlatpageForm, self).__init__(*args, **kwargs)
          self.fields['content'].widget = TinyMCE(
              attrs={'cols': 120, 'rows': 30})
  
  
  class CustomFlatPageAdmin(FlatPageAdmin):
      form = CustomFlatpageForm
  
  
  admin.site.unregister(FlatPage)
  admin.site.register(FlatPage, CustomFlatPageAdmin)
  
  
  class CustomFlatBlockForm(forms.ModelForm):
      def __init__(self, *args, **kwargs):
          super(CustomFlatBlockForm, self).__init__(*args, **kwargs)
          self.fields['content'].widget = TinyMCE(
              attrs={'cols': 120, 'rows': 30})
  
  
  class CustomFlatBlockAdmin(FlatBlockAdmin):
      form = CustomFlatBlockForm
  
  
  admin.site.unregister(FlatBlock)
  admin.site.register(FlatBlock, CustomFlatBlockAdmin)
  
subject: fix to the flatblocks admin editor