How can I make this complex object JSON serializable?

Asked May 24 '21 at 17:01

Active May 24 '21 at 17:01

Viewed 28 times

I've got:

class Catalog():
    Categories = []

class Category():
    Subcategories = []
    Courses = []
    def __init__(self, title):
        self.Title = title

It goes on, where subcategories and courses have child objects as well, but I'm having trouble JSON serializing this whole complex object. It barfs:

Object of type Catalog is not JSON serializable

I have also made all of these classes inherit from this, based on an article that I read, but it seems to have no effect.

class ContentBase(object):
    def __repr__(self):
        return json.dumps(self.__dict__)

How can I create an entire tree of categories, subcategories, courses, chapters, and lessons and be able to dump that all out as JSON?

asked May 24 '21 at 17:01

Russ

For what purpose are you trying to save an object to .json? – felipe May 24 '21 at 17:06
how about using drf? You can generate very complex json objects. – Nischay Namdev May 24 '21 at 17:09
To export to a file @Felipe. This reads info from a database, creates the json, and saves it to a file for consumption by the apps. – Russ May 24 '21 at 17:18
What exactly is the JSON you would like to produce? – juanpa.arrivillaga May 24 '21 at 18:21
["Categories": [{"Title":"Category 1", "Courses": [{ ... }], "Subcategories": [{...}]]] – Russ May 24 '21 at 18:23
I've closed as a duplicate. The simplest solution is something like: `json.dumps(my_object, default=vars)` – juanpa.arrivillaga May 24 '21 at 18:31
This is assuming, of course, you are working with instance variables – juanpa.arrivillaga May 24 '21 at 18:32

How can I make this complex object JSON serializable?

0 Answers0