Trying to Nullify Django model fields with method where model and fields are parameters
- by Johnny4000
I'm trying to write a method like the below where a list of fields (a subset of all the fields) is passed in as a parameter and has their column values set to null. I would be happy of I could get a method with just the fields as a parameter like below, but having the model as a parameter would be even better.
from my_project.my_app.models import MyModel
def nullify_columns (self, null_fields):
field_names = MyModel._meta.get_all_field_names()
for field in field_names:
if field in null_fields:
# The below line does not work because I'm not sure how to
# dynamically assign the field name.
MyModel.objects.all().update( (MyModel.get_field(field).column) = None)
Right now I have something like
if 'column1' in list_of_fields:
MyModel.objects.all().update(column1 = None)
if 'column2' in list_of_fields:
MyModel.objects.all().update(column2 = None)
etc. which is horrible, but works.
