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Jun 26th, 2019
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  1. class Categoria(models.Model):
  2. nombre = models.CharField(max_length=50)
  3. def __str__(self):
  4. return self.nombre
  5.  
  6. class Proveedor(models.Model):
  7.  
  8. razon_social = models.CharField(max_length=100, unique=True)
  9. ...
  10. categoria = models.ManyToManyField(Categoria)
  11. def __unicode__(self):
  12. return self.razon_social
  13.  
  14. for proveedor in Proveedor.objects.all().filter(estado=1):
  15. ...
  16. ws.cell(row=cont, column=8).value = proveedor.categoria.all.join(", ")
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