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Riccardo CandidoPython Web Development Techdegree Student 2,790 Points
Unable to run the app after I use 'app.register_blueprint(courses_api)'
I followed everything so far, however I am stuck with Blueprint now. I get this error and I am not even sure what exactly the problem is:
$ python app.py Traceback (most recent call last): File "app.py", line 13, in <module> app.register_blueprint(mailbox_api) File "/usr/lib/python2.7/site-packages/flask/app.py", line 62, in wrapper_func return f(self, *args, **kwargs) File "/usr/lib/python2.7/site-packages/flask/app.py", line 889, in register_blueprint blueprint.register(self, options, first_registration) File "/usr/lib/python2.7/site-packages/flask/blueprints.py", line 153, in register deferred(state) File "/usr/lib/python2.7/site-packages/flask/blueprints.py", line 172, in <lambda> s.add_url_rule(rule, endpoint, view_func, **options)) File "/usr/lib64/python2.7/site-packages/flask_restful/__init__.py", line 161, in _blueprint_setup_add_url_rule_patch view_func, defaults=defaults, **options) File "/usr/lib/python2.7/site-packages/flask/app.py", line 62, in wrapper_func return f(self, *args, **kwargs) File "/usr/lib/python2.7/site-packages/flask/app.py", line 976, in add_url_rule rule = self.url_rule_class(rule, methods=methods, **options) File "/usr/lib/python2.7/site-packages/werkzeug/routing.py", line 541, in __init__ raise ValueError('urls must start with a leading slash') ValueError: urls must start with a leading slash
By the way, I changed the name of the variables, but I am sure I am consistent with that and that that is not the issue here.
Anthony Kimberly10,828 Points
I had this same problem and was able to find in my courses.py file I was missing the slash ("/") at the beginning of one of the URIs. I had this:
api.add_resource( Course, 'api/v1/courses/<int:id>', endpoint='course' )
and it should've been this:
api.add_resource( Course, '/api/v1/courses/<int:id>', endpoint='course' )
If that doesn't fix it can you post your code?