Melvyn was not saying whether you were checking for None. If `value` is i.e. "some string" your to_python method will return `None`. You should do something like this:
```
if value in ('t', ...): return True
elif value in ('f', ...): return False
else: return bool(value) # You can change this
```
Hi Melvyn,I am checking for None in the last if condition in to_python method :--copy--> if value in ('f', 'False', 'false', '0', '\x00', None): return
> False
--copy--
Thanks for checking and replying !!
Regards,
Priyanka
On Friday, 16 June 2017 20:03:22 UTC+5:30, Priyanka Thakur wrote:Hi,I am doing migration from Django 1.7 to 1.10 version and has a custom django field.Below is the custom class for the field:----from django.db import models
class HibernateBooleanField(models.
BooleanField): def from_db_value(self, value, _expression_, connection, context):
return self.to_python(value)
def get_internal_type(self):
return "HibernateBooleanField"
def db_type(self, connection):
return 'bit(1)'
def to_python(self, value):
if value in (True, False):
return value
if value in ('t', 'True', 'true', '1', '\x01'): return True
if value in ('f', 'False', 'false', '0', '\x00', None): return False
def get_db_prep_value(self, value, connection, prepared=False):
return 0x01 if value else 0x00
def get_db_prep_save(self, value, connection):
return 0x01 if value else 0x00
def get_prep_value(self, value):
return self.to_python(value)
---
I have defined a field in the model as:
class MetaMetadata(models.Model):
is_folder = HibernateBooleanField()
When I invoke a POST request on API in my test case , I get the value for this field as "None" in response.
The API is :
response = self._client.post('/xyz/api/metametadatas/',
{'edit_view': "TestEditView",
'grid_view': "TestGridView",
'name': "Test Metametadata",
'sort_key': 9000,
'parentid': 0,
'version':0,
'id': 100}, format='json')Please explain , what is it that I'm doing wrong. Why isn't to_python method getting invoked ? Am I missing something?Regards,Priyanka
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