how to desrialize json to object in python or django

Question

I am new to python and django. i must consume a web service and the response of web service is json like this:

[{'name': 'gfile1.txt', 'length': 448, 'createdDate': '1582229671352'}, {'name': 'gfile2.txt', 'length': 86, 'createdDate': '1582229671474'}, {'name': 'soc-LiveJournal1.txt', 'length': 1080598042, 'createdDate': '1582229715227'}]

also i have a class according to this json result: the below is class definition:

class DataParameter:
    def __init__(self, name, size, _createdDate):
        self.filename = name
        self.filesize = size
        self.createdDate = _createdDate

what should i do is: i must convert the above json to list of DataParameter class. Can you help me to do this? Thanks

why not use DRF parser django-rest-framework.org/api-guide/parsers/… — devdob
– devdob, Commented Mar 6, 2020 at 13:21

Dmitry Shevchenko · Accepted Answer · 2020-03-06 13:16:54Z

1

If I understand you correctly, you can try something like this:

data = [
    {'name': 'gfile1.txt', 'length': 448, 'createdDate': '1582229671352'},
    {'name': 'gfile2.txt', 'length': 86, 'createdDate': '1582229671474'},
    {'name': 'soc-LiveJournal1.txt', 'length': 1080598042, 'createdDate': '1582229715227'}
]


class DataParameter:
    def __init__(self, name, size, _createdDate):
        self.filename = name
        self.filesize = size
        self.createdDate = _createdDate


new_list = []

for i in data:
    new_list.append(DataParameter(i['name'], i['length'], i['createdDate']))

print(new_list)

answered Mar 6, 2020 at 13:16

Dmitry Shevchenko

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Comments

Rahul Raut · Accepted Answer · 2020-03-06 13:21:05Z

0

Here's a quick and dirty alternative

class DataParameter:
    def __init__(self, name, size, _createdDate):
        self.filename = name
        self.filesize = size
        self.createdDate = _createdDate

    @classmethod
    def from_json(cls, json_str):
        lst = []
        for dct in json:
            lst.append(cls(**json_dict))
        return lst

#Usage 
my_json = [{'name': 'gfile1.txt', 'length': 448, 'createdDate': '1582229671352'}, {'name': 'gfile2.txt', 'length': 86, 'createdDate': '1582229671474'}, {'name': 'soc-LiveJournal1.txt', 'length': 1080598042, 'createdDate': '1582229715227'}]
DataParameter.from_json(my_json)

answered Mar 6, 2020 at 13:21

Rahul Raut

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