Apply ckeditor(WYSIWYG rich text editor) to flask-admin textarea

ckedit.py

from flask import Flask
from flask.ext.sqlalchemy import SQLAlchemy

from flask.ext import admin
from wtforms import TextAreaField
from wtforms.widgets import TextArea
from flask.ext.admin.contrib.sqla import ModelView

app = Flask(__name__)
app.config['SECRET_KEY'] = '123456790'
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///test.sqlite'
db = SQLAlchemy(app)


class CKTextAreaWidget(TextArea):
    def __call__(self, field, **kwargs):
        kwargs.setdefault('class_', 'ckeditor')
        return super(CKTextAreaWidget, self).__call__(field, **kwargs)


class CKTextAreaField(TextAreaField):
    widget = CKTextAreaWidget()


class Test(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    text = db.Column(db.UnicodeText)


class TestAdmin(ModelView):
    form_overrides = dict(text=CKTextAreaField)

    create_template = 'edit.html'
    edit_template = 'edit.html'


if __name__ == '__main__':
    admin = admin.Admin(app)
    admin.add_view(TestAdmin(Test, db.session))
    db.create_all()
    app.debug = True
    app.run('0.0.0.0', 8000)

edit.html

{% extends 'admin/model/edit.html' %}

{% block tail %}
    {{ super() }}
    <script src="http://cdnjs.cloudflare.com/ajax/libs/ckeditor/4.0.1/ckeditor.js"></script>
{% endblock %}

Flask-WTF and SQLAlchemy new versions has changed their API, so I update the original gist created by mrjoes(https://gist.github.com/mrjoes/5189850).
To try this gist, download this two files, put edit.html in templates directory and run this gist by pyhton ckedit.py

In order to make this example work with the bootstrap3 template in Flask-admin, do the following:

class CKTextAreaWidget(TextArea):
    def __call__(self, field, **kwargs):
        if kwargs.get('class'):
            kwargs['class'] += " ckeditor"
        else:
            kwargs.setdefault('class', 'ckeditor')
        return super(CKTextAreaWidget, self).__call__(field, **kwargs)

And change the Admin() initialization call as follows:

admin = admin.Admin(app, template_mode='bootstrap3')

Thank you both !!!

Still working fine, thank you!