Bottle and Json

Question

How do I go about returning json data from a bottle request handler. I see a dict2json method in the bottle src but I am not sure how to use it.

What is in the documentation:

@route('/spam')
def spam():
    return {'status':'online', 'servertime':time.time()}

Gives me this when I bring up the page:

<html>
    <head></head>
    <body>statusservertime</body>
</html>

You can also use import json then json.dumps(dict). But good move, I also go between bottle and flask and end up choosing flask. I like bottle being lightweight and not having a bigger framework behind it. But stuff like typed url params always win me back for doing things like date detection or indexes i.e. /blog///// Where bottle only has :param names. So a path with 4 slashes isn't always a date/blog type url. I use both but tend to flask for bigger apps currently due to stuff like this. — Ryan Christensen, Jan 05 '11 at 18:45
I have this problem too. When I use curl -I, I see that the content type is wrong: Content-Type: text/html; charset=UTF-8 — Sridhar Sarnobat, Apr 23 '13 at 22:04

score 44 · Accepted Answer · edited Oct 10 '13 at 17:37

44

Simply return a dict. Bottle handles the conversion to JSON for you.

Even dictionaries are allowed. They are converted to json and returned with Content-Type header set to application/json. To disable this feature (and pass dicts to your middleware) you can set bottle.default_app().autojson to False.

@route('/api/status')
def api_status():
    return {'status':'online', 'servertime':time.time()}

Taken from the documentation.

http://bottlepy.org/docs/stable/api.html#the-bottle-class

edited Oct 10 '13 at 17:37

stormdrain

7,910
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answered Aug 17 '10 at 20:39

Andrew

11,325
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2

This doesn't actually answer the question – Henry Finucane Oct 10 '13 at 18:11

score 6 · Answer 2 · answered Sep 17 '10 at 00:20

6

For some reason, bottle's auto-json feature doesn't work for me. If it doesn't work for you either, you can use this decorator:

def json_result(f):
    def g(*a, **k):
        return json.dumps(f(*a, **k))
    return g

Also handy:

def mime(mime_type):
    def decorator(f):
        def g(*a, **k):
            response.content_type = mime_type
            return f(*a, **k)
        return g
    return decorator

answered Sep 17 '10 at 00:20

David M.

3,647
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This worked great for me to return arrays of dictionaries, which aren't handled by Bottle – Martín Coll May 11 '13 at 18:27
1

You shouldn't be returning a list of dictionaries, which is why bottle makes it so difficult (and Flask as well). See here: http://flask.pocoo.org/docs/security/#json-security – Martin Konecny Jul 24 '13 at 14:44
Returning lists of dictionaries is good now. http://flask.pocoo.org/docs/security/#json-security – Prof. Falken Jul 09 '18 at 23:44

score 3 · Answer 3 · answered Sep 17 '10 at 00:16

3

return {'status':'online', 'servertime':time.time()} works perfectly well for me. Have you imported time?

This works:

import time
from bottle import route, run

@route('/')
def index():
    return {'status':'online', 'servertime':time.time()}

run(host='localhost', port=8080)

answered Sep 17 '10 at 00:16

Tim McNamara

16,863
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That didn't work for me. I did import time. I guess it's a version-related change of behavior. – Sridhar Sarnobat Apr 23 '13 at 21:58

score 0 · Answer 4 · answered Apr 28 '15 at 08:09

0

try this should works as intended

from bson.json_util import dumps
from bottle import route, run
import time

@route('/')
def index():
     return {'status':'online', 'servertime':dumps(time.time()) }

run(host='localhost', port=8080)

answered Apr 28 '15 at 08:09

Darshan J

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score 0 · Answer 5 · answered Aug 01 '17 at 00:23

0

it is easy to get json using bottle's request module

from bottle import request

json_data = request.json # json_data is in the dictionary format

answered Aug 01 '17 at 00:23

llcao

101
3

Bottle and Json

5 Answers5