webpy: How to serve JSON

Question

Is it possible to use webpy to serve JSON? I built my website and I need to serve some information in JSON to interact with the Javascript on some pages.

I try to look for answers in the documentation, but I'm not able to find anything.

Thanks, Giovanni

score 62 · Accepted Answer · answered Aug 18 '10 at 17:05

62

I wouldn't think you'd have to do any thing overly "special" for web.py to serve JSON.

import web
import json

class index:
    def GET(self):
        pyDict = {'one':1,'two':2}
        web.header('Content-Type', 'application/json')
        return json.dumps(pyDict)

answered Aug 18 '10 at 17:05

Mark

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perfect! I knew it was simpler than I was imaging! thanks a lot! – Giovanni Di Milia Aug 18 '10 at 20:36
If you want to render HTML *OR* JSON depending on the client, I have posted some code examples in an answer to this question. – Sean Reifschneider Aug 02 '11 at 07:44
@Sean: sorry this is not the purpose of this question: I was not looking for a good implementation, but a simple way to do it. – Giovanni Di Milia Aug 04 '11 at 21:20
I guess I don't understand the distinction between "way to do it" and "an implementation", particularly as the answer that you accepted was an implementation with less discussion. :-) – Sean Reifschneider Aug 10 '11 at 21:16

score -6 · Answer 2 · answered Aug 18 '10 at 15:28

It is certainly possible to serve JSON from webpy, But if you and choosing a framework, I would look at starlight and my fork twilight (for documentation).

It has a JSON wrapper for fixing the http headers for your json response.

it uses either the json or simplejson libraries for json handling the conversions to and from other objects.

I am using it right now and it is great.

https://bitbucket.org/marchon/twilight

in it you will find an example called ShowMeTheJson.py

that uses simple json

from starlight import *
from werkzeug.routing import Map
from werkzeug.routing import RuleFactory

import simplejson


class ShowMeTheResponses(App):

####################################################################
#
#   Sample URLS to Test Responses 
#
#   http://localhost:8080/                root
#
#   http://localhost:8080/json            return JSON Mime Type Doc  
#
###################################################################



   @default
   def hello(self):
       return 'Hello, world!'

   @dispatch('/')
   def index(self): 
       return 'Hello Root!'

   @dispatch('/html')
   def indexhtml(self): 
       return HTML('Hello HTML')

   @dispatch('/json')
   def indexjson(self):
       directions = {'N' : 'North', 'S' : 'South', 'E':'East', 'W' : 'West'}
       return JSON(simplejson.dumps(directions))         


if __name__ == '__main__':
    from werkzeug import run_simple
    run_simple('localhost', 8080, ShowMeTheResponses())

it's great, but I cannot migrate all my website. do you have any pointer for webpy? — Giovanni Di Milia, Aug 18 '10 at 15:51
Telling people to use "your" framework is not really an answer to the question. — Dolf Andringa, Mar 31 '15 at 01:12

webpy: How to serve JSON

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