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An `as_blueprint` method for Flask MethodView classes
from flask import Flask, Blueprint
from flask.views import MethodView
class ApiResource(MethodView):
endpoint = None
url_prefix = None
url_rules = {}
@classmethod
def as_blueprint(cls, name=None):
name = name or cls.endpoint
bp = Blueprint(name, cls.__module__, url_prefix=cls.url_prefix)
for endpoint, options in cls.url_rules.iteritems():
url_rule = options
methods = ('GET',)
defaults = {}
if len(options) == 2:
url_rule, methods = options
elif len(options) == 3:
url_rule, methods, defaults = options
bp.add_url_rule(url_rule, endpoint=endpoint, methods=methods,
defaults=defaults, view_func=cls.as_view(endpoint))
return bp
class MyResource(ApiResource):
endpoint = 'my'
url_prefix = '/hello'
url_rules = {
'index': ['', ('GET',), {'id': None}],
'select': ['/<id>', ('GET',)]
}
def get(self, id):
if id is None:
return 'hello'
return id
if __name__ == '__main__':
app = Flask(__name__)
app.register_blueprint(MyResource.as_blueprint())
assert app.url_map.is_endpoint_expecting('my.index')
assert app.url_map.is_endpoint_expecting('my.select', 'id')
with app.test_client() as client:
assert client.get('/hello').data == 'hello'
assert client.get('/hello/stuff').data == 'stuff'
print('Tests passed successfully!')
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