Created
June 27, 2012 10:58
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| Debugging middleware caught exception in streamed response at a point where response headers were already sent. | |
| Traceback (most recent call last): | |
| File "/home/max/.virtualenvs/flask/lib/python2.7/site-packages/werkzeug/wsgi.py", line 513, in next | |
| return self._next() | |
| File "/home/max/.virtualenvs/flask/lib/python2.7/site-packages/werkzeug/wrappers.py", line 829, in iter_encoded | |
| for item in self.response: | |
| File "/home/max/.virtualenvs/flask/lib/python2.7/site-packages/jinja2/environment.py", line 918, in generate | |
| yield self.environment.handle_exception(exc_info, True) | |
| File "/home/max/Projekte/flask-testing-stuff/templates/index.html", line 1, in top-level template code | |
| {% extends "layout.html" %} | |
| File "/home/max/Projekte/flask-testing-stuff/templates/layout.html", line 8, in top-level template code | |
| <a href="{{ url_for('index') }}" class=""><h1>d'Anjou</h1></a> | |
| File "/home/max/.virtualenvs/flask/lib/python2.7/site-packages/flask/helpers.py", line 192, in url_for | |
| blueprint_name = request.blueprint | |
| File "/home/max/.virtualenvs/flask/lib/python2.7/site-packages/werkzeug/local.py", line 336, in __getattr__ | |
| return getattr(self._get_current_object(), name) | |
| File "/home/max/.virtualenvs/flask/lib/python2.7/site-packages/werkzeug/local.py", line 295, in _get_current_object | |
| return self.__local() | |
| File "/home/max/.virtualenvs/flask/lib/python2.7/site-packages/flask/globals.py", line 19, in _lookup_object | |
| raise RuntimeError('working outside of request context') | |
| RuntimeError: working outside of request context |
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| {% extends "layout.html" %} | |
| {% block body %} | |
| <ul> | |
| {% for elem in mygenerator %} | |
| <li> | |
| <a href="{{ url_for('index') }}">{{ elem }}</a> | |
| </li> | |
| {% endfor %} | |
| </ul> | |
| {% endblock %} |
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| <!DOCTYPE html> | |
| <head> | |
| <meta charset="utf-8" /> | |
| <title>Title</title> | |
| </head> | |
| <body> | |
| <p> | |
| <a href="{{ url_for('index') }}" class=""><h1>d'Anjou</h1></a> | |
| </p> | |
| {% block body %} | |
| {% endblock %} | |
| </body> | |
| </html> |
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| from flask import Flask, Response, _request_ctx_stack | |
| from jinja2 import Template | |
| from time import sleep | |
| app = Flask(__name__) | |
| def get_generator(): | |
| with _request_ctx_stack.top: | |
| for i in xrange(10): | |
| sleep(0.5) | |
| yield i | |
| @app.before_request | |
| def before_request(*args): | |
| print 'before_request' | |
| @app.after_request | |
| def after_request(response): | |
| print 'after_request' | |
| return response | |
| @app.teardown_request | |
| def teardown_request(error=None): | |
| print 'teardown_request' | |
| @app.route('/') | |
| def index(): | |
| t = app.jinja_env.get_template('index.html') | |
| return Response(t.generate(mygenerator=get_generator())) | |
| if __name__ == "__main__": | |
| app.run(debug=True) |
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