django filter on the basis of text length

Question

I would like to filter my model on the basis of the length of the text Something like

MyModel.objects.filter(len(text) > 10)

where text is a Char or Text field in MyModel model

Answer 1

For Django >= 1.8 you can use the Length function, which is @Pratyush's CHAR_LENGTH() under the hood for MySQL, or LENGTH() for some other databases:

from django.db.models.functions import Length
qs = MyModel.objects.annotate(text_len=Length('text_field_name')).filter(
    text_len__gt=10)