CODEWITHSUNDEEP
pythondjangotypesdjango-admin
Timmy O'Mahony
Timmy O'Mahony

Reputation: 53991

django-admin: "super() argument 1 must be type, not None" when overriding save method

Well, another unhelpful error has caused me to spend an hour trying to sort this problem.

I have a model 'CompanyProfile' that has been working until recently, but now when i try to save the model through the admin, I get an error which seems to be telling me that the Object reference is null. I have no idea how to sort this.

I'm doing everything as usual:

def save(self, force_insert=False, force_update=False):
    super(CompanyProfile, self).save(force_insert, force_update)

I've restarted the server, reinstalled django, cleared the database, and still no luck. Anyone have any ideas or had this problem before?

Upvotes: 3

Views: 1372

Answers (4)

Yuji 'Tomita' Tomita
Yuji 'Tomita' Tomita

Reputation: 118468

Maybe it's a cyclic import issue? http://markmail.org/message/zothlfayqkbidqfh#query:+page:1+mid:3cnpcw3e4cgo3cas+state:results

In the example here, he had an import statement in a signal that was the culprit.

You could check globals() for similar symptoms..

Upvotes: 4

Timbadu
Timbadu

Reputation: 1551

Just a quick guess, but is this save method definately part of the CompanyProfile models class and is your indentation correct?

Upvotes: 0

James Addison
James Addison

Reputation: 3094

Try following the save() override example from the docs here. Note the use of *args, **kwargs. If that doesn't work then something is serious messed up.

Upvotes: 1

Adam Vandenberg
Adam Vandenberg

Reputation: 20651

You need to use args/kwargs when overriding model methods: http://docs.djangoproject.com/en/dev/topics/db/models/#overriding-model-methods

It's also important that you pass through the arguments that can be passed to the model method -- that's what the *args, **kwargs bit does. Django will, from time to time, extend the capabilities of built-in model methods, adding new arguments. If you use *args, **kwargs in your method definitions, you are guaranteed that your code will automatically support those arguments when they are added.

Upvotes: 1

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