diff --git a/flask/blueprints.py b/flask/blueprints.py index 45faf2c5..4abc0ffa 100644 --- a/flask/blueprints.py +++ b/flask/blueprints.py @@ -399,3 +399,14 @@ class Blueprint(_PackageBoundObject): self.name, code_or_exception, f)) return f return decorator + + def register_error_handler(self, code_or_exception, f): + """Non-decorator version of the :meth:`errorhandler` error attach + function, akin to the :meth:`~flask.Flask.register_error_handler` + application-wide function of the :class:`~flask.Flask` object but + for error handlers limited to this blueprint. + + .. versionadded:: 0.11 + """ + self.record_once(lambda s: s.app._register_error_handler( + self.name, code_or_exception, f)) diff --git a/flask/testsuite/blueprints.py b/flask/testsuite/blueprints.py index 8a0e5a79..8b3e530c 100644 --- a/flask/testsuite/blueprints.py +++ b/flask/testsuite/blueprints.py @@ -296,6 +296,39 @@ class BlueprintTestCase(FlaskTestCase): self.assert_equal(c.get('/backend-no').data, b'backend says no') self.assert_equal(c.get('/what-is-a-sideend').data, b'application itself says no') + def test_blueprint_specific_user_error_handling(self): + class MyDecoratorException(Exception): + pass + class MyFunctionException(Exception): + pass + + blue = flask.Blueprint('blue', __name__) + + @blue.errorhandler(MyDecoratorException) + def my_decorator_exception_handler(e): + self.assert_true(isinstance(e, MyDecoratorException)) + return 'boom' + + def my_function_exception_handler(e): + self.assert_true(isinstance(e, MyFunctionException)) + return 'bam' + blue.register_error_handler(MyFunctionException, my_function_exception_handler) + + @blue.route('/decorator') + def blue_deco_test(): + raise MyDecoratorException() + @blue.route('/function') + def blue_func_test(): + raise MyFunctionException() + + app = flask.Flask(__name__) + app.register_blueprint(blue) + + c = app.test_client() + + self.assert_equal(c.get('/decorator').data, b'boom') + self.assert_equal(c.get('/function').data, b'bam') + def test_blueprint_url_definitions(self): bp = flask.Blueprint('test', __name__)