def gen_rnd_filename():
 filename_prefix = datetime.datetime.now().strftime('%Y%m%d%H%M%S')
 return '%s%s' % (filename_prefix, str(random.randrange(1000, 10000)))

@app.route('/ckupload/', methods=['POST'])
def ckupload():
 """CKEditor file upload"""
 error = ''
 url = ''
 callback = request.args.get("CKEditorFuncNum")
 if request.method == 'POST' and 'upload' in request.files:
 fileobj = request.files['upload']
 fname, fext = os.path.splitext(fileobj.filename)
 rnd_name = '%s%s' % (gen_rnd_filename(), fext)
 filepath = os.path.join(app.static_folder, 'upload', rnd_name)
 # 檢查路徑是否存在，不存在則創建
 dirname = os.path.dirname(filepath)
 if not os.path.exists(dirname):
 try:
 os.makedirs(dirname)
 except:
 error = 'ERROR_CREATE_DIR'
 elif not os.access(dirname, os.W_OK):
 error = 'ERROR_DIR_NOT_WRITEABLE'
 if not error:
 fileobj.save(filepath)
 url = url_for('static', filename='%s/%s' % ('upload', rnd_name))
 else:
 error = 'post error'
 res = """

<script type="text/javascript">
 window.parent.CKEDITOR.tools.callFunction(%s, '%s', '%s');
</script>

""" % (callback, url, error)
 response = make_response(res)
 response.headers["Content-Type"] = "text/html"
 return response

demo = Blueprint('demo', static_folder="/path/to/static")

response = form.upload(endpoint=demo)