CODEWITHSUNDEEP
pythonapacheflask
Gaby Solis
Gaby Solis

Reputation: 2587

Flask+Apache and 500 Error

I am using Flask and Apache to build a website and the site is up and running.

However I met this strange 500 error: one 500 error will take the website down, and the site will never come online again until I restart apache. I expect Flask+Apache can serve the next visitor after the 500 error, anyway, Flask is thread local.

Assuming the following occassion:

@app.route('/<ExpectSomeInteger>')
def hello_world(ExpectSomeInteger):
    aNumber = int(ExpectSomeInteger)
    .....

Obviously the code above is faulty and it should use <int:ExpectSomeInteger> and stuff. If some visitor typed some letters in the "ExpectSomeInteger"'s place, then flask will return a 500 error.

The disaster is apache will send a 500 error page to all visitors after that! I can only restart apache to make it work again!

Is it normal?

I remember when I visit some PHP+MySQL site, even after some very serious errors, the site can serve the next visitor as normal.

Upvotes: 1

Views: 1053

Answers (2)

Gaby Solis
Gaby Solis

Reputation: 2587

Thanks to @Sasha Chedygov and my site is working fine now.

The problem is I installed something called "mod-python" by following Linode's Library: https://library.linode.com/web-servers/apache/installation/ubuntu-10.04-lucid

After I did "apt-get remove libapache2-mod-python", Everything seems fine now.

Upvotes: 1

Blender
Blender

Reputation: 298048

Pass a type converter into the route:

@app.route('/<int:an_integer>')
def hello_world(an_integer):
    ...

Now, an_integer is guaranteed to be an integer. When you pass anything other than an integer, a 404 response is sent.

Upvotes: 0

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