Django Flatpage Redactor Field

admin.py

# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from django.contrib import admin
from redactor.widgets import RedactorEditor
from django.contrib.flatpages.models import FlatPage
from django.contrib.flatpages.admin import FlatPageAdmin as FlatPageAdminOld

class FlatPageAdmin(FlatPageAdminOld):
    formfield_overrides = {
        models.TextField: {'widget': RedactorEditor},
    }


admin.site.unregister(FlatPage)
admin.site.register(FlatPage, FlatPageAdmin)