FieldTracker throws AttributeError in post_save signal while tying to get changed() fields
I have been trying to make use of the FieldTracker in my project to track the fields that has been updated from within a post_save signal. Initially I thought of using django-dirtyfields, but since it did not support django 2.1, I had to resort to django-model-utils.
Below is the project setup
customer/apps.py
from django.apps import AppConfig
class CustomerConfig(AppConfig):
name = 'customer'
def ready(self):
import customer.signals
customer/models.py
from model_utils import FieldTracker
class CreatedByModel(models.Model):
created_by = models.ForeignKey(User, blank=True, null=True)
modified_by = models.ForeignKey(User, blank=True, null=True)
class Meta:
abstract = True
class Customer(CreatedByModel)
name = models.CharField(max_length=255)
code = models.CharField(max_length=10)
customer_tracker = FieldTracker()
Including the admin save_model code here since I am explicitly setting the created_by and modified_by fields here, and calling the super class save_model, which I am not sure might be causing the problem
customer/admin.py
class CustomerAdmin(admin.ModelAdmin):
def save_model(self, request, obj, form, change):
if not obj.created_by:
obj.created_by = request.user
else:
obj.modified_by = request.user
super().save_model(request, obj, form, change)
customer/signals.py
from django.db.models.signals import post_save
from django.dispatch import receiver
from .models import Customer
@receiver(post_save, sender=Customer)
def notify_api_clients(sender, **kwargs):
print('hit inside tracker {}' . format(sender.customer_tracker.changed()))
I am receiving an AttributeError error while trying to save a Customer object stating 'FieldTracker' object has no attribute 'changed'.
I am not sure what might be the issue here. Appreciate any guidance.
UPDATE
After a couple of testing, I was able to get the changed() fields after calling it using the instance within the post_save arguments **kwargs as follows
@receiver(post_save, sender=Customer)
def notify_api_clients(sender, **kwargs):
if 'instance' in kwargs:
instance = kwargs['instance']
print('changed fields: {}' . format(instance.customer_tracker.changed()))
I hope this might have been what I was missing.
django django-signals django-model-utils
asked Nov 13 '18 at 11:50
Fahim AhmedFahim Ahmed
4719
add a comment |
I have been trying to make use of the FieldTracker in my project to track the fields that has been updated from within a post_save signal. Initially I thought of using django-dirtyfields, but since it did not support django 2.1, I had to resort to django-model-utils.
Below is the project setup
customer/apps.py
from django.apps import AppConfig
class CustomerConfig(AppConfig):
name = 'customer'
def ready(self):
import customer.signals
customer/models.py
from model_utils import FieldTracker
class CreatedByModel(models.Model):
created_by = models.ForeignKey(User, blank=True, null=True)
modified_by = models.ForeignKey(User, blank=True, null=True)
class Meta:
abstract = True
class Customer(CreatedByModel)
name = models.CharField(max_length=255)
code = models.CharField(max_length=10)
customer_tracker = FieldTracker()
Including the admin save_model code here since I am explicitly setting the created_by and modified_by fields here, and calling the super class save_model, which I am not sure might be causing the problem
customer/admin.py
class CustomerAdmin(admin.ModelAdmin):
def save_model(self, request, obj, form, change):
if not obj.created_by:
obj.created_by = request.user
else:
obj.modified_by = request.user
super().save_model(request, obj, form, change)
customer/signals.py
from django.db.models.signals import post_save
from django.dispatch import receiver
from .models import Customer
@receiver(post_save, sender=Customer)
def notify_api_clients(sender, **kwargs):
print('hit inside tracker {}' . format(sender.customer_tracker.changed()))
I am receiving an AttributeError error while trying to save a Customer object stating 'FieldTracker' object has no attribute 'changed'.
I am not sure what might be the issue here. Appreciate any guidance.
UPDATE
After a couple of testing, I was able to get the changed() fields after calling it using the instance within the post_save arguments **kwargs as follows
@receiver(post_save, sender=Customer)
def notify_api_clients(sender, **kwargs):
if 'instance' in kwargs:
instance = kwargs['instance']
print('changed fields: {}' . format(instance.customer_tracker.changed()))
I hope this might have been what I was missing.
django django-signals django-model-utils
asked Nov 13 '18 at 11:50
Fahim AhmedFahim Ahmed
4719
add a comment |
I have been trying to make use of the FieldTracker in my project to track the fields that has been updated from within a post_save signal. Initially I thought of using django-dirtyfields, but since it did not support django 2.1, I had to resort to django-model-utils.
Below is the project setup
customer/apps.py
from django.apps import AppConfig
class CustomerConfig(AppConfig):
name = 'customer'
def ready(self):
import customer.signals
customer/models.py
from model_utils import FieldTracker
class CreatedByModel(models.Model):
created_by = models.ForeignKey(User, blank=True, null=True)
modified_by = models.ForeignKey(User, blank=True, null=True)
class Meta:
abstract = True
class Customer(CreatedByModel)
name = models.CharField(max_length=255)
code = models.CharField(max_length=10)
customer_tracker = FieldTracker()
Including the admin save_model code here since I am explicitly setting the created_by and modified_by fields here, and calling the super class save_model, which I am not sure might be causing the problem
customer/admin.py
class CustomerAdmin(admin.ModelAdmin):
def save_model(self, request, obj, form, change):
if not obj.created_by:
obj.created_by = request.user
else:
obj.modified_by = request.user
super().save_model(request, obj, form, change)
customer/signals.py
from django.db.models.signals import post_save
from django.dispatch import receiver
from .models import Customer
@receiver(post_save, sender=Customer)
def notify_api_clients(sender, **kwargs):
print('hit inside tracker {}' . format(sender.customer_tracker.changed()))
I am receiving an AttributeError error while trying to save a Customer object stating 'FieldTracker' object has no attribute 'changed'.
I am not sure what might be the issue here. Appreciate any guidance.
UPDATE
After a couple of testing, I was able to get the changed() fields after calling it using the instance within the post_save arguments **kwargs as follows
@receiver(post_save, sender=Customer)
def notify_api_clients(sender, **kwargs):
if 'instance' in kwargs:
instance = kwargs['instance']
print('changed fields: {}' . format(instance.customer_tracker.changed()))
I hope this might have been what I was missing.
django django-signals django-model-utils
asked Nov 13 '18 at 11:50
Fahim AhmedFahim Ahmed
4719
I have been trying to make use of the FieldTracker in my project to track the fields that has been updated from within a post_save signal. Initially I thought of using django-dirtyfields, but since it did not support django 2.1, I had to resort to django-model-utils.
Below is the project setup
customer/apps.py
from django.apps import AppConfig
class CustomerConfig(AppConfig):
name = 'customer'
def ready(self):
import customer.signals
customer/models.py
from model_utils import FieldTracker
class CreatedByModel(models.Model):
created_by = models.ForeignKey(User, blank=True, null=True)
modified_by = models.ForeignKey(User, blank=True, null=True)
class Meta:
abstract = True
class Customer(CreatedByModel)
name = models.CharField(max_length=255)
code = models.CharField(max_length=10)
customer_tracker = FieldTracker()
Including the admin save_model code here since I am explicitly setting the created_by and modified_by fields here, and calling the super class save_model, which I am not sure might be causing the problem
customer/admin.py
class CustomerAdmin(admin.ModelAdmin):
def save_model(self, request, obj, form, change):
if not obj.created_by:
obj.created_by = request.user
else:
obj.modified_by = request.user
super().save_model(request, obj, form, change)
customer/signals.py
from django.db.models.signals import post_save
from django.dispatch import receiver
from .models import Customer
@receiver(post_save, sender=Customer)
def notify_api_clients(sender, **kwargs):
print('hit inside tracker {}' . format(sender.customer_tracker.changed()))
I am receiving an AttributeError error while trying to save a Customer object stating 'FieldTracker' object has no attribute 'changed'.
I am not sure what might be the issue here. Appreciate any guidance.
UPDATE
After a couple of testing, I was able to get the changed() fields after calling it using the instance within the post_save arguments **kwargs as follows
@receiver(post_save, sender=Customer)
def notify_api_clients(sender, **kwargs):
if 'instance' in kwargs:
instance = kwargs['instance']
print('changed fields: {}' . format(instance.customer_tracker.changed()))
I hope this might have been what I was missing.
django django-signals django-model-utils
django django-signals django-model-utils
asked Nov 13 '18 at 11:50
Fahim AhmedFahim Ahmed
4719
asked Nov 13 '18 at 11:50
Fahim AhmedFahim Ahmed
4719
edited Nov 13 '18 at 12:06
Fahim Ahmed
asked Nov 13 '18 at 11:50
Fahim AhmedFahim Ahmed
4719
asked Nov 13 '18 at 11:50
Fahim AhmedFahim Ahmed
4719
asked Nov 13 '18 at 11:50
Fahim AhmedFahim Ahmed
4719
4719
add a comment |
add a comment |
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