CODEWITHSUNDEEP
pythondjango
Dylan Klomparens
Dylan Klomparens

Reputation: 2952

Sort list of different model objects by different fields

What is the most Pythonic way to sort on different fields a list that may contain two distinct types of Django model objects? Here's an example:

The models:

class A(models.Model):
        creation_time = models.DateTimeField()
class B(models.Model):
        last_updated = models.DateTimeField()

The view:

a = A.objects.all().order_by('creation_time')
b = B.objects.all().order_by('last_updated')
c = list(chain(a, b))
# Now I want to organize the contents of c by date pertaining to each object.

How can I sort with different keys on each object?

Upvotes: 0

Views: 72

Answers (1)

user2867522
user2867522

Reputation:

Sort the list c in place using 

c.sort(key=lambda x: getattr(x, 'creation_time', None) or getattr(x, 'creation_date', None))

Upvotes: 3

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