Access to custom fields in view?

[Miguel Angel Yáñez Camacho]

Hi all from spain and sorry for my bad english ;)

Hi a have in this model 2 custom fields: "responsive" and "engine"

class template(models.Model):
    state = models.IntegerField()  # estado del template 1= activo, 0= inactivo
    tid = models.IntegerField(primary_key=True)
    price = models.IntegerField()  # precio unidad
    priceexc = models.IntegerField()  # precio exclusivo
    inserted_date = models.DateTimeField(null=True, blank=True)
    update_date = models.DateTimeField(null=True, blank=True)
    live_preview_url = models.CharField(max_length=1000, null=True, blank=True)
    tipo = models.ForeignKey(tipo)
    keywords = models.CharField(max_length=9000, null=True, blank=True)
    screen_preview_s = models.CharField(max_length=1000, null=True, blank=True)
    screen_preview_l = models.CharField(max_length=1000, null=True, blank=True)
    origen = models.ForeignKey(origen)
    url_compra = models.CharField(max_length=1000, null=True, blank=True)
    promocionada = models.BooleanField(default=False)
    portada = models.BooleanField(default=False)

    def __unicode__(self):
        return self.live_preview_url

    def _get_responsive(self):

        try:
            responsive = templates_propiedad.objects.get(propiedad="features", valor="responsive", plantilla=self)
            salida = "1"
        except:
            salida = "0"
        return salida
    responsive = property(_get_responsive)

    def _get_engine(self):
        try:
            engine = templates_propiedad.objects.get(propiedad="prestashop-compatibility", plantilla=self)
            salida = engine.valor
        except:
            salida = "0"
        return salida

    engine = property(_get_engine)

in my view in this code i can access to a regular field but i CANT access to custom fields, give me error

            plantillas_db = templates_keyword.objects.select_related('plantilla').filter(keyword=bd_keywordsfinal, plantilla__state='1', plantilla__promocionada=False).distinct().order_by('-plantilla__inserted_date')

            s = set(plantillas_db)
            for i in s:
                print(i.id)
                print(i.responsive)
                print(i.engine)

How can i access to this fields?
thanks

Miguel

[Ryan Blunden]

I would use the @property decorator.

class template(models.Model):
    ...    

    

    @property

    def responsive(self):

        try:
            responsive = templates_propiedad.objects.get(propiedad="features", valor="responsive", plantilla=self)
            salida = "1"
        except:
            salida = "0"
        return salida

    @property

    def engine(self):

        try:
            engine = templates_propiedad.objects.get(propiedad="prestashop-compatibility", plantilla=self)
            salida = engine.valor
        except:
            salida = "0"
        return salida

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[Daniel Roseman]

On Wednesday, 30 July 2014 19:02:00 UTC+1, Miguel Angel Yáñez Camacho wrote:

in my view in this code i can access to a regular field but i CANT access to custom fields, give me error

            plantillas_db = templates_keyword.objects.select_related('plantilla').filter(keyword=bd_keywordsfinal, plantilla__state='1', plantilla__promocionada=False).distinct().order_by('-plantilla__inserted_date')

            s = set(plantillas_db)
            for i in s:
                print(i.id)
                print(i.responsive)
                print(i.engine)

How can i access to this fields?
thanks

Miguel

*What* error you you get *exactly*? The code you've given should be fine, although it's cleaner to use the @property decorator rather than manually wrapping a function (but the functionality is exactly the same). Show us what happens.

--

DR.