Re: Subquery has too many columns

Base class is abstract.

class Base(models.Model):
    plano = models.ForeignKey(Plano)


    class Meta:
        abstract = True

base_manager_name

On Saturday, February 18, 2017 at 9:20:03 PM UTC-3, Melvyn Sopacua wrote:

On Saturday 18 February 2017 22:27:46 Elton Pereira wrote:

 

> class ProdutoServicoManager(models.Manager):

> def get_queryset(self):

> expression = models.Sum(models.F('custounitario__valor') *

> models.F('custounitario__quantidade'))

> total_expr = models.ExpressionWrapper(expression,

> output_field=models.DecimalField())

> return

> super().get_queryset().annotate(custo_producao=total_expr)

>

> class ProdutoServico(Base):

 

What's the manager on Base?

 

> produto = models.BooleanField(default=True)

> descricao = models.TextField()

> objects = ProdutoServicoManager()

>

> class Meta:

> base_manager_name = 'objects'

 

Cause this doesn't actually do anything, beside being explicit.

 

--

Melvyn Sopacua

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