在ForeignKey字段上进行模型查询

Question

Is it possible to get a query set based on a related models field.

pseudo code:

#models.py
class Model1(models.Model):
    a = models.CharField(max_length=50)

class Model2(models.Model):
    model1 = models.ForeignKey(Model1)

# Get all model2 entries where model1.a == foo

Answer 1

objects = Model2.objects.filter(model1__a='foo')