Getting 'KeyError: None' error when trying to use customer errorhandler - Flask
up vote
1
down vote
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I have the following:
def handle_error_404(error):
flash('Server says: {0}'.format(error), 'error')
return render_template('404.html', selected_menu_item=None)
def handle_error_500(error):
flash('Server says: {0}'.format(error), 'error')
return render_template('500.html', selected_menu_item=None)
def init_error_handlers(app):
if app:
app.error_handler_spec[None][404] = handle_error_404
app.error_handler_spec[None][500] = handle_error_500
I was following a tutorial on how to use customer error handlers, but I can't seem to find a way around this error. How can I get around this?
python flask error-handling
asked Nov 17 at 21:53
J.Oh
183
add a comment |
up vote
1
down vote
favorite
I have the following:
def handle_error_404(error):
flash('Server says: {0}'.format(error), 'error')
return render_template('404.html', selected_menu_item=None)
def handle_error_500(error):
flash('Server says: {0}'.format(error), 'error')
return render_template('500.html', selected_menu_item=None)
def init_error_handlers(app):
if app:
app.error_handler_spec[None][404] = handle_error_404
app.error_handler_spec[None][500] = handle_error_500
I was following a tutorial on how to use customer error handlers, but I can't seem to find a way around this error. How can I get around this?
python flask error-handling
asked Nov 17 at 21:53
J.Oh
183
add a comment |
up vote
1
down vote
favorite
up vote
1
down vote
favorite
I have the following:
def handle_error_404(error):
flash('Server says: {0}'.format(error), 'error')
return render_template('404.html', selected_menu_item=None)
def handle_error_500(error):
flash('Server says: {0}'.format(error), 'error')
return render_template('500.html', selected_menu_item=None)
def init_error_handlers(app):
if app:
app.error_handler_spec[None][404] = handle_error_404
app.error_handler_spec[None][500] = handle_error_500
I was following a tutorial on how to use customer error handlers, but I can't seem to find a way around this error. How can I get around this?
python flask error-handling
asked Nov 17 at 21:53
J.Oh
183
I have the following:
def handle_error_404(error):
flash('Server says: {0}'.format(error), 'error')
return render_template('404.html', selected_menu_item=None)
def handle_error_500(error):
flash('Server says: {0}'.format(error), 'error')
return render_template('500.html', selected_menu_item=None)
def init_error_handlers(app):
if app:
app.error_handler_spec[None][404] = handle_error_404
app.error_handler_spec[None][500] = handle_error_500
I was following a tutorial on how to use customer error handlers, but I can't seem to find a way around this error. How can I get around this?
python flask error-handling
python flask error-handling
asked Nov 17 at 21:53
J.Oh
183
asked Nov 17 at 21:53
J.Oh
183
asked Nov 17 at 21:53
J.Oh
183
asked Nov 17 at 21:53
J.Oh
183
asked Nov 17 at 21:53
J.Oh
183
183
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
up vote
0
down vote
accepted
The flask docs say you should register an error handler using the errorhandler decorator. An example using your code:
def handle_error_404(error):
flash('Server says: {0}'.format(error), 'error')
return render_template('404.html', selected_menu_item=None)
def handle_error_500(error):
flash('Server says: {0}'.format(error), 'error')
return render_template('500.html', selected_menu_item=None)
def init_error_handlers(app):
if app:
app.errorhandler(404)(handle_error_404)
app.errorhandler(500)(handle_error_500)
Alternatively:
def init_error_handlers(app):
if app:
@app.errorhandler(404)
def handle_error_404(error):
flash('Server says: {0}'.format(error), 'error')
return render_template('404.html', selected_menu_item=None)
@app.errorhandler(500)
def handle_error_500(error):
flash('Server says: {0}'.format(error), 'error')
return render_template('500.html', selected_menu_item=None)
answered Nov 17 at 22:08
augray
2,0151123
This worked. Thank you!!
– J.Oh
Nov 17 at 22:22
@J.Oh, then feel free to mark it as the answer ;-)
– augray
Nov 18 at 3:26
add a comment |
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
0
down vote
accepted
The flask docs say you should register an error handler using the errorhandler decorator. An example using your code:
def handle_error_404(error):
flash('Server says: {0}'.format(error), 'error')
return render_template('404.html', selected_menu_item=None)
def handle_error_500(error):
flash('Server says: {0}'.format(error), 'error')
return render_template('500.html', selected_menu_item=None)
def init_error_handlers(app):
if app:
app.errorhandler(404)(handle_error_404)
app.errorhandler(500)(handle_error_500)
Alternatively:
def init_error_handlers(app):
if app:
@app.errorhandler(404)
def handle_error_404(error):
flash('Server says: {0}'.format(error), 'error')
return render_template('404.html', selected_menu_item=None)
@app.errorhandler(500)
def handle_error_500(error):
flash('Server says: {0}'.format(error), 'error')
return render_template('500.html', selected_menu_item=None)
answered Nov 17 at 22:08
augray
2,0151123
This worked. Thank you!!
– J.Oh
Nov 17 at 22:22
@J.Oh, then feel free to mark it as the answer ;-)
– augray
Nov 18 at 3:26
add a comment |
up vote
0
down vote
accepted
The flask docs say you should register an error handler using the errorhandler decorator. An example using your code:
def handle_error_404(error):
flash('Server says: {0}'.format(error), 'error')
return render_template('404.html', selected_menu_item=None)
def handle_error_500(error):
flash('Server says: {0}'.format(error), 'error')
return render_template('500.html', selected_menu_item=None)
def init_error_handlers(app):
if app:
app.errorhandler(404)(handle_error_404)
app.errorhandler(500)(handle_error_500)
Alternatively:
def init_error_handlers(app):
if app:
@app.errorhandler(404)
def handle_error_404(error):
flash('Server says: {0}'.format(error), 'error')
return render_template('404.html', selected_menu_item=None)
@app.errorhandler(500)
def handle_error_500(error):
flash('Server says: {0}'.format(error), 'error')
return render_template('500.html', selected_menu_item=None)
answered Nov 17 at 22:08
augray
2,0151123
This worked. Thank you!!
– J.Oh
Nov 17 at 22:22
@J.Oh, then feel free to mark it as the answer ;-)
– augray
Nov 18 at 3:26
add a comment |
up vote
0
down vote
accepted
up vote
0
down vote
accepted
The flask docs say you should register an error handler using the errorhandler decorator. An example using your code:
def handle_error_404(error):
flash('Server says: {0}'.format(error), 'error')
return render_template('404.html', selected_menu_item=None)
def handle_error_500(error):
flash('Server says: {0}'.format(error), 'error')
return render_template('500.html', selected_menu_item=None)
def init_error_handlers(app):
if app:
app.errorhandler(404)(handle_error_404)
app.errorhandler(500)(handle_error_500)
Alternatively:
def init_error_handlers(app):
if app:
@app.errorhandler(404)
def handle_error_404(error):
flash('Server says: {0}'.format(error), 'error')
return render_template('404.html', selected_menu_item=None)
@app.errorhandler(500)
def handle_error_500(error):
flash('Server says: {0}'.format(error), 'error')
return render_template('500.html', selected_menu_item=None)
answered Nov 17 at 22:08
augray
2,0151123
The flask docs say you should register an error handler using the errorhandler decorator. An example using your code:
def handle_error_404(error):
flash('Server says: {0}'.format(error), 'error')
return render_template('404.html', selected_menu_item=None)
def handle_error_500(error):
flash('Server says: {0}'.format(error), 'error')
return render_template('500.html', selected_menu_item=None)
def init_error_handlers(app):
if app:
app.errorhandler(404)(handle_error_404)
app.errorhandler(500)(handle_error_500)
Alternatively:
def init_error_handlers(app):
if app:
@app.errorhandler(404)
def handle_error_404(error):
flash('Server says: {0}'.format(error), 'error')
return render_template('404.html', selected_menu_item=None)
@app.errorhandler(500)
def handle_error_500(error):
flash('Server says: {0}'.format(error), 'error')
return render_template('500.html', selected_menu_item=None)
answered Nov 17 at 22:08
augray
2,0151123
answered Nov 17 at 22:08
augray
2,0151123
answered Nov 17 at 22:08
augray
2,0151123
answered Nov 17 at 22:08
augray
2,0151123
2,0151123
This worked. Thank you!!
– J.Oh
Nov 17 at 22:22
@J.Oh, then feel free to mark it as the answer ;-)
– augray
Nov 18 at 3:26
add a comment |
This worked. Thank you!!
– J.Oh
Nov 17 at 22:22
@J.Oh, then feel free to mark it as the answer ;-)
– augray
Nov 18 at 3:26
This worked. Thank you!!
– J.Oh
Nov 17 at 22:22
This worked. Thank you!!
– J.Oh
Nov 17 at 22:22
@J.Oh, then feel free to mark it as the answer ;-)
– augray
Nov 18 at 3:26
@J.Oh, then feel free to mark it as the answer ;-)
– augray
Nov 18 at 3:26
add a comment |
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