Google Cloud Endpoints not Loading when redirect via webapp2
Federico Capello via StackOverflow
I have a web app running on Google App Engine. I implemented an API via Cloud Endpoints and I use it in this app via Javascript. However, to log the users in, I use webapp2 to handle the process. When the users are successfully logged in, they are redirected to the home page. Everything seemed to work fine before I added the webapp2 redirect, but now I get this error:
GET http://localhost:10080/_ah/api/discovery/v1/apis/books/v1/rest?fields=rootUrl%2CservicePath%2Cresources%2Cparameters%2Cmethods&pp=0 500 (OK)
Uncaught TypeError: Cannot read property 'queryBooks' of undefined
I think it's really strange, since what I did more was just redirect from one page to another. I tried to refresh the page but the error was still there. I tried to handle the login via javascript but it was too painful.
Here's the relevant code:
gapi loading:
<head>
...
<script type="text/javascript">
function init() {
var apisToLoad;
var loadCallback = function() {
console.log(88);
if (--apisToLoad == 0) {
signin(true, userAuthed);
}
};
apisToLoad = 2; // must match number of calls to gapi.client.load()
apiRoot = '//' + window.location.host + '/_ah/api';
console.log(apiRoot);
gapi.client.load('books', 'v1', loadCallback, apiRoot);
gapi.client.load('oauth2', 'v2', loadCallback);
}
function authorizeCallback()
{
}
function signin(mode, authorizeCallback) {
gapi.auth.authorize({client_id: '480333XXXXXXXXXXXXXXo6lckcrt5sehee3dg.apps.googleusercontent.com',
scope: 'https://www.googleapis.com/auth/userinfo.email', immediate: true},
authorizeCallback);
}
function userAuthed() {
var request = gapi.client.oauth2.userinfo.get().execute(function(resp) {
if (!resp.code) {
// User is signed in, call my Endpoint
start_spinner();
gapi.client.books.queryBooks({"subject":"ita"}).execute(function(q) {
create_content(q.items, "ita");
add_searches();
});
}
});
}
</script>
<script src="https://apis.google.com/js/client.js?onload=init"></script>
</head>
<body>
project/index.html
<a href="{{ url|safe }}" class="mdl-button mdl-js-button mdl-button--accent">
Accedi
</a>
webapp2 main.py
(all the imports)
JINJA_ENVIRONMENT = jinja2.Environment(
loader=jinja2.FileSystemLoader(os.path.dirname(__file__)),
extensions=['jinja2.ext.autoescape'],
autoescape=True)
class MainPage(webapp2.RequestHandler):
def get(self):
user = users.get_current_user()
url = users.create_login_url(self.request.uri + 'login')
if user:
user_id = getUserId(user)
p_key = ndb.Key(Profile, user_id)
profile = p_key.get()
if profile:
self.redirect('/partials/home.html', permanent = True)
template_values = {'url': url}
template = JINJA_ENVIRONMENT.get_template('index.html')
self.response.write(template.render(template_values))
class LogIn(webapp2.RequestHandler):
def get(self):
user = users.get_current_user()
if user:
user_id = getUserId(user)
p_key = ndb.Key(Profile, user_id)
profile = p_key.get()
if profile:
self.redirect('partials/home.html', permanent = True)
else:
profile = Profile(
key = p_key,
nickName = user.nickname(),
firstName = "Test",
lastName = "Test",
mainEmail = user.email()
)
# save the profile to datastore
profile.put()
self.redirect('/partials/home.html')
else:
self.redirect('/')
app = webapp2.WSGIApplication([
('/', MainPage),
('/login', LogIn)
], debug=True)
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http://stackoverflow.com/questions/32280945/google-cloud-endpoints-not-loading-when-redirect-via-webapp2
Dan Cornilescu via StackOverflow
Assuming you show indeed all the relevant code the error message suggests that gapi.client.books is undefined at this line (the only reference to queryBooks):
gapi.client.books.queryBooks({"subject":"ita"}).execute(function(q) {
You may want to display it in a debug message to confirm that.
If confirmed check your related code, eventually your imports and your API installation in GAE.
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Federico Capello via StackOverflow
EDIT:
Here's the app.yaml code:
application: project-books
version: 1
runtime: python27
api_version: 1
threadsafe: yes
handlers:
- url: /favicon\.ico
static_files: favicon.ico
upload: favicon\.ico
- url: /js
static_dir: static/js
- url: /img
static_dir: static/img
- url: /css
static_dir: static/css
- url: /partials
static_dir: static/partials
#- url: /.*
# script: main.app
- url: /_ah/spi/.*
script: books.api
secure: always
libraries:
- name: endpoints
version: latest
- name: pycrypto
version: latest
- name: webapp2
version: latest
- name: jinja2
version: latest
When I comment #- url: /.*
# script: main.app
the API is working and can be accessed in the api explorer on localhost, otherwise it can't. So the error is in these two lines but I can't figure out why.
Federico Capello via StackOverflow
I don't know why it works, but I solved it:
I changed this:
- url: /.*
script: main.app
- url: /_ah/spi/.*
script: books.api
secure: always
to this:
- url: /_ah/spi/.*
script: books.api
secure: always
- url: /
script: main.app
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