Django snippet 800

from django.core.serializers.json import DjangoJSONEncoder
from django.db.models.query import QuerySet

def maybe_call(x):
    if callable(x): return x()
    return x


class JSONEncoder(DjangoJSONEncoder):
    '''An extended JSON encoder to handle some additional cases.

    The Django encoder already deals with date/datetime objects.
    Additionally, this encoder uses an 'as_dict' or 'as_list' attribute or
    method of an object, if provided. It also makes lists from QuerySets.
    '''
    def default(self, obj):
        if hasattr(obj, 'as_dict'):
            return maybe_call(obj.as_dict)
        elif hasattr(obj, 'as_list'):
            return maybe_call(obj.as_list)
        elif isinstance(obj, QuerySet):
            return list(obj)
        return super(JSONEncoder, self).default(obj)
json_encode = JSONEncoder().encode

Source: djangosnippets.org

Similar codes

2 votes149 views1 answer
Python 3.7 tutorial pdf with exercises
Python
0 vote181 views1 answer
How to set and run flask app on terminal
Python Flask
1 vote159 views1 answer
Plotly line plot
Python
0 vote151 views1 answer
Scikit learn tree
Python
0 vote177 views1 answer
Python tuples number Multiplication
Python
2 votes170 views3 answers
List to text python
Python
1 vote148 views1 answer
Python find dict in list of dict by id
Python
0 vote157 views1 answer
Python plot jpg image
Python
1 vote121 views1 answer
_reverse_with_prefix() argument after * must be an iterable, not int
Python
9 votes150 views4 answers
Python combinations function
Python