CODEWITHSUNDEEP
pythondjango
Krash
Krash

Reputation: 2287

How to get attribute of a django model's foreign key object using getattr in python?

Suppose I have two models as such 

class first(models.Model):
    name = models.CharField(max_length=20)
    y = models.ForeignKey(second)

class second(models.Model):
    random = models.CharField(max_length=20)

Now if I want value of name for a first object instance using getattr, I can do getattr(x, 'name') where x is a first object but if I try the same with getattr(x, 'y.random') , it throws me an error even though x.y.random is a totally valid query.

Is it possible to query x.y.random if all I have is object x and string 'y.random'?

Upvotes: 1

Views: 1503

Answers (1)

Danil Speransky
Danil Speransky

Reputation: 30453

That's because it tries to fetch property 'y.random', though there is no such property, and it's not even valid to have a property with .. 

getattr(getattr(x, 'y'), 'random'))

Upvotes: 2

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