Bottle and Json

python json bottle

18,869

Solution 1

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

Solution 2

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

Solution 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)

18,869

arinte

Updated on August 01, 2020

Comments

arinte almost 4 years
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>
```
- arinte almost 14 years
  
  I moved on to flask and it works fine.
- Jobayer Ahmed Mickey over 13 years
  
  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/<int:day>/<int:month>/<int:year>/<path:path>/ 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.
- Sridhar Sarnobat about 11 years
  
  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 about 11 years

That didn't work for me. I did import time. I guess it's a version-related change of behavior.
Martín Coll about 11 years

This worked great for me to return arrays of dictionaries, which aren't handled by Bottle
Martin Konecny almost 11 years

You shouldn't be returning a list of dictionaries, which is why bottle makes it so difficult (and Flask as well). See here: flask.pocoo.org/docs/security/#json-security
Henry Finucane over 10 years

This doesn't actually answer the question
Prof. Falken almost 6 years

Returning lists of dictionaries is good now. flask.pocoo.org/docs/security/#json-security