CODEWITHSUNDEEP
pythondjangodjango-models
HuLu ViCa
HuLu ViCa

Reputation: 5456

Set value of an unknown Django Model Field

I am implementing a function that gets a model class as a parameter, and should get a dictionary from the same model, set model fields to namesake keys in such dictionary, and save the model to the database.

This is the code of the function:

def populate_model(self, model_to_populate):
    model_to_populate_instance = model_to_populate()

    if hasattr(model_to_populate_instance, 'populate_data'):
        populate_data = getattr(model_to_populate, 'populate_data')
        for key, value in populate_data.items():
            field = getattr(model_to_populate_instance, key)
            field = value

            model_to_populate_instance.save()

Something is wrong because I don't get values from the dictionary in the database, but objects GeneralApp.models.CustomCharField>. I guess I am not succeeding to set the value of the model instance field to the value in the dictionary.

O would appreciate your help.

Upvotes: 0

Views: 458

Answers (1)

RishiG
RishiG

Reputation: 2830

Replace the lines

        field = getattr(model_to_populate_instance, key)
        field = value

with

        setattr(model_to_populate_instance, key, value)

Reason: the return value of getattr is the value of the attribute, not a reference to the attribute itself (if it were a reference, it wouldn't make sense to set field = value anyway.

Upvotes: 1

Related Questions