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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