Flask-ErrorHandler

Flask-ErrorHandler provides a generic error handler for blueprints.

Sample:

from flask import Flask, Blueprint
from flask.ext.errorhandler import ErrorHandler
import json

app = Flask(__name__)
api_blueprint = Blueprint('api', 'api')
web_blueprint = Blueprint('web', 'web')

errorhandler = ErrorHandler()
errorhandler.init_app(app)

@errorhandler.errorhandler(api_blueprint)
def handle_error(e):
    data = {
        'error': {
            'code': e.code,
            'message': e.description
        }
    }
    response = Response(json.dumps(data),
                        mimetype='application/json',
                        status=e.code)
    return response

@errorhandler.errorhandler(web_blueprint)
def handle_error(e):
    body = '<h1>%d</h1><p>%s</p>' % (e.code, e.description)
    response = Response(body, mimetype='text/html', status=e.code)
    return response