django给特定字段指定使用CKEditor

比如给django默认的网页编辑模块flatpages添加CKEditor功能:

from django.contrib.flatpages import forms as fps_forms
from ckeditor.widgets import CKEditorWidget
fps_forms.FlatpageForm.Meta.widgets.update({"content":CKEditorWidget})

请举一反三，触类旁通。