Get the Model of a OneToOne

user_13242198 0
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I need to get the Model of a OneToOne related model:

class ModelA(models.Model):
    name = models.CharField(...)

class ModelB(models.Model):
    target = models.OneToOneField(
        ModelA, 
        related_name="model_a", 
    ...)

When I use an instance of ModelB to get the class of its target field with:

 modelb_instance.model_a._meta.model

I get an error:

ForwardOneToOneDescriptor' object has no attribute '_meta'

I am aware that this cannot be done on OneToOne attribute, but I am not sure how to retrieve ModelA model name. Any help would be appreciated

As @Willem suggested working though the Options of a ModelB did the job: modelb_instance._meta.get_field('target').related_model

one-to-one metadata django
1 Answers

You can work with:

ModelB.target.field.related_model

or for a modelb_instance:

type(modelb_instance).target.field.related_model

or we can work through the Options of ModelB with:

modelb_instance._meta.get_field('target').related_model
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