Django data model query results converted to Json format

Overview

It is often used in Django to convert Model query results into Json format data. Results generally QuerySet that (Model class collection of objects) or a single Model class object, use of Model __dict__property, Model Json data into format data.

method

1. Single data format

my_model = MyModel.objects.get( id=request.GET.get( "model_id" ) )
# 打印 my_model.__dict__ 发现有一个"_state"，
# 不是我们Model定义的内容，需要去除
my_model.__dict__.pop( "_state" ) #需要去除，否则不能 Json化
return JsonResponse( my_model.__dict__, safe=False )

2. Multiple data

Use the for loop to process it as a single data, and finally make it into Json format.

lst_my_model = MyModel.objects.all()
model_data = []
for item in lst_my_model:
        item.__dict__.pop( "_state" )
        model_data.append( item )
result = { "data": model_data }
return JsonResponse( result, safe=False )