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An enhancement of flask blueprint.

Project description

Flask-Whiteprint is an enhancement of Flask-Blueprint.


Flask-Whiteprint is on development. I recommend NOT using it now.

Whiteprint-level Error Handler

Flask-Whiteprint supports whiteprint-level error handler for all exceptions include 404 and 500. I’ll remove that ending parentheses soon.

def handle_error(e):
    data = {
        'error': {
            'code': e.code,
            'message': e.message
    return Response(data, mimetype='application/json', status=e.status)

Dynamic Alias URL

You can alias url with alias method. Alias redirects without any redirect response (e.g. 301 or 302) and with all request context (e.g. HTTP Header, URL Variables or Form Data). This code redirects /me to /user/<int:id> with all request context.

@api.route('/me', methods=['GET', 'POST', 'PUT', 'DELETE'])
@api.route('/me/<path:path>', methods=['GET', 'POST', 'PUT', 'DELETE'])
def redirect_me(path=''):
    if 'path' in request.view_args:
    user_path = '/user/%d/' % + path
    if user_path[-1] == '/':
        user_path = user_path[:-1]
    return api.alias(user_path,

Sub whiteprint (Not yet)

You can add child whiteprints to another whiteprint.

app (Flask Application)
|-- api (Parent whiteprint)
|   |-- auth (Child whiteprint)
|   |   |-- login (Another child whiteprint)
|   |   `-- logout
|   |-- user
|   `-- post
|-- web (Another parent whiteprint)
|   |-- auth
|   |-- user
|   `-- post
`-- admin
    `-- admin

It looks awkward, but… just for an example!

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