Combining two JSON objects in to one

Question

I have two JSON objects. One is python array which is converted using json,dumps() and other contains records from database and is serialized using json serializer. I want to combine them into a single JSON object.

For eg:

obj1 = ["a1", "a2", "a3"]

obj2 = [{
    "pk": "e1",
    "model": "AB.abc",
    "fields": {
      "e_desc": "abcd"
    }
  },
  {
    "pk": "e1",
    "model": "AB.abc",
    "fields": {
      "e_desc": "hij"
    }
  }
]

I want to merge them into single object as below:

finalObj = {
  obj1: ["a1", "a2", "a3"],
  obj2: [{
      "pk": "e1",
      "model": "AB.abc",
      "fields": {
        "e_desc": "abcd"
      }
    },
    {
      "pk": "e1",
      "model": "AB.abc",
      "fields": {
        "e_desc": "hij"
      }
    }
  ]
}

How can i do this?

typeof(finalObj.obj2) back on the client is string. To get back the JSON object use JSON.parse(finalObj) — Shankar ARUL
– Shankar ARUL, Commented Jan 23, 2015 at 17:34

Vinay Sajip · Accepted Answer · 2009-07-08 07:19:26Z

23

You can't do it once they're in JSON format - JSON is just text. You need to combine them in Python first:

data = { 'obj1' : obj1, 'obj2' : obj2 }
json.dumps(data)

answered Jul 8, 2009 at 7:19

Vinay Sajip

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Comments

ars · Accepted Answer · 2009-07-08 08:12:59Z

6

Not sure if I'm missing something, but I think this works (tested in python 2.5) with the output you specify:

import simplejson

finalObj = { 'obj1': obj1, 'obj2': obj2 }
simplejson.dumps(finalObj)

edited Jul 8, 2009 at 8:12

answered Jul 8, 2009 at 7:20

ars

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Comments

S.Lott · Accepted Answer · 2009-07-08 10:25:51Z

0

You have two techniques. The list version suffers from the limitation that the order matters. However, the JSON is slightly simpler-looking. The dictionary version has nested data, which looks more complex.

data = { 'obj1' : obj1, 'obj2' : obj2 }
json.dumps(data,indent=2)


data = [ obj1, obj2 ]
json.dumps(data,indent=2)

answered Jul 8, 2009 at 10:25

S.Lott

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2 Comments

Dr_Zaszuś Over a year ago

Thanks. Why do you add indent=2?

Vivek Over a year ago

The indent parameter specifies the spaces that are used at the beginning of a line. We can use the indent parameter of json - pynative.com/python-prettyprint-json-data

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