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import json
from collections import OrderedDict
from django.contrib.contenttypes.fields import GenericForeignKey
from django.contrib.contenttypes.models import ContentType
from django.db import models
from jsonfield import JSONCharField, JSONField
class ComplexEncoder(json.JSONEncoder):
def default(self, o):
return {
'__complex__': True,
'real': o.real,
'imag': o.imag,
}
def as_complex(dct):
return complex(dct['real'], dct['imag'])
class GenericForeignKeyObj(models.Model):
name = models.CharField('Foreign Obj', max_length=255, null=True)
class JSONCharModel(models.Model):
json = JSONCharField(max_length=100)
default_json = JSONCharField(max_length=100, default={"check": 34})
class JSONModel(models.Model):
json = JSONField()
default_json = JSONField(default={"check": 12})
complex_default_json = JSONField(default=[{"checkcheck": 1212}])
empty_default = JSONField(default={}, blank=True)
class JSONModelCustomEncoders(models.Model):
# A JSON field that can store complex numbers
json = JSONField(
dump_kwargs={'cls': ComplexEncoder, "indent": 4},
load_kwargs={'object_hook': as_complex},
)
class JSONModelWithForeignKey(models.Model):
json = JSONField(null=True)
foreign_obj = GenericForeignKey()
object_id = models.PositiveIntegerField(blank=True, null=True, db_index=True)
content_type = models.ForeignKey(ContentType, blank=True, null=True, on_delete=models.CASCADE)
class JSONRequiredModel(models.Model):
json = JSONField()
class JSONNotRequiredModel(models.Model):
json = JSONField(blank=True, null=True)
class OrderedJSONModel(models.Model):
json = JSONField(load_kwargs={'object_pairs_hook': OrderedDict})
class RemoteJSONModel(models.Model):
foreign = models.ForeignKey(JSONModel, blank=True, null=True, on_delete=models.CASCADE)
def default():
return {'example': 'data'}
class CallableDefaultModel(models.Model):
json = JSONField(default=default)
class MTIParentModel(models.Model):
parent_data = JSONField()
class MTIChildModel(MTIParentModel):
child_data = JSONField()
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