CODEWITHSUNDEEP
djangodjango-models
Username
Username

Reputation: 3663

unbound method save() must be called with MyModel instance as first argument

I'm using setattr() to set attributes of a new object of a Django model.

obj = apps.get_model(app_label="theme", model_name="MyModel")
setattr(obj,"myCol",100)
obj.save()

I got this error: TypeError: unbound method save() must be called with DataPopulationTracts2016 instance as first argument (got nothing instead).

I want to save the new instance of MyModel to the model, using get_model() and setattr() to make a new instance of the model and set its attributes. How do I make get_model() and setattr() work with save()?

EDIT: To clarify, I'm making a manage.py command where the user inputs the model and column they want to add a new record for.

Upvotes: 1

Views: 379

Answers (1)

wim
wim

Reputation: 363043

get_model gets the model class. So you should create an instance:

Model = apps.get_model(app_label="theme", model_name="MyModel")
obj = Model()
setattr(obj,"myCol",100)
obj.save()

Note: I'm assuming you've created a simplified example here. However, if you don't really need the extra dynamism, you should really prefer to just do the vanilla:

MyModel.objects.create(myCol=100)

Upvotes: 2

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