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I'm trying to build my first GAE app with jinja2. After overcoming a dozen small errors, now I'm stuck with this:
Traceback (most recent call last):
File "C:\Program Files (x86)\Google\google_appengine\lib\webapp2\webapp2.py", line 1536, in __call__
rv = self.handle_exception(request, response, e)
File "C:\Program Files (x86)\Google\google_appengine\lib\webapp2\webapp2.py", line 1530, in __call__
rv = self.router.dispatch(request, response)
File "C:\Program Files (x86)\Google\google_appengine\lib\webapp2\webapp2.py", line 1278, in default_dispatcher
return route.handler_adapter(request, response)
File "C:\Program Files (x86)\Google\google_appengine\lib\webapp2\webapp2.py", line 1102, in __call__
return handler.dispatch()
File "C:\Program Files (x86)\Google\google_appengine\lib\webapp2\webapp2.py", line 572, in dispatch
return self.handle_exception(e, self.app.debug)
File "C:\Program Files (x86)\Google\google_appengine\lib\webapp2\webapp2.py", line 570, in dispatch
return method(*args, **kwargs)
File "C:\Users\CG\Documents\udacity\HiMon\main.py", line 31, in get
template = jinja_environment.get_template('index.html')
File "C:\Program Files (x86)\Google\google_appengine\lib\jinja2\jinja2\environment.py", line 719, in get_template
return self._load_template(name, self.make_globals(globals))
File "C:\Program Files (x86)\Google\google_appengine\lib\jinja2\jinja2\environment.py", line 693, in _load_template
template = self.loader.load(self, name, globals)
File "C:\Program Files (x86)\Google\google_appengine\lib\jinja2\jinja2\loaders.py", line 115, in load
source, filename, uptodate = self.get_source(environment, name)
File "C:\Program Files (x86)\Google\google_appengine\lib\jinja2\jinja2\loaders.py", line 180, in get_source
raise TemplateNotFound(template)
TemplateNotFound: index.html
Here my yaml file:
application: himother
version: 1
runtime: python27
api_version: 1
threadsafe: yes
handlers:
- url: /favicon\.ico
static_files: favicon.ico
upload: favicon\.ico
- url: .*
script: main.app
libraries:
- name: webapp2
version: "2.5.1"
- name: jinja2
version: "2.6"
Here my code:
import os
import webapp2
import jinja2
jinja_environment = jinja2.Environment(autoescape=True,
loader=jinja2.FileSystemLoader(os.path.join(os.path.dirname(__file__), 'templates')))
class MainPage(webapp2.RequestHandler):
def get(self):
template_values = {
'name': 'Serendipo',
'verb': 'extremely happy'
}
template = jinja_environment.get_template('index.html')
self.response.out.write(template.render(template_values))
app = webapp2.WSGIApplication([('/', MainPage)],
debug=True)
Here my .html template:
<!DOCTYPE html>
<html>
<head>
<title>Look Ma, I'm using Jinja!</title>
</head>
<body>
Hi there - I'm {{ name }}, and I {{ verb }} programming!
</body>
</html>
Despite the error message, I have a folder called "templates" and, within it, created the index.html file:
I also have installed jinja2.
Does anyone have any idea of the cause of this error now?
649
You should probably be using the jinja2 version that's included in webapp2_extras.
The example of getting this set up is here: http://webapp-improved.appspot.com/api/webapp2_extras/jinja2.html#webapp2_extras.jinja2.Jinja2
The key difference is that instead of setting up the jinja2.Environment yourself, you do...
from webapp2_extras import jinja2
jinja = jinja2.get_jinja2(app=self.app)
jinja.render_template("index.html")
You will also likely need to include jinja2 in your libraries section of app.yaml:
libraries:
- name: jinja2
version: "2.6"
Man.. I was facing the same problem as you and just found the answer.
jinja_environment = jinja2.Environment(autoescape=True,
loader=jinja2.FileSystemLoader(os.path.join(os.path.dirname(__file__), 'templates')))
class MainPage(webapp2.RequestHandler):
def get(self):
template_values = {
'name': 'Serendipo',
'verb': 'extremely happy'
}
template = jinja_environment.get_template('index.html')
self.response.out.write(template.render(template_values))
The "jinja_environment" part don't need the extra [, 'templates']. This you should place before your index.html file string like:
template = jinja_environment.get_template('templates/index.html')
At least this is how it worked for me (oh, and I wasn't using the autoescape=True part either, but I guess its optional).
Thinking again, maybe you could even leave the [, 'templates'] part, but you would need to put a "/" before the 'index.html', making '/index.html', but this is another guess.
3
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