ListView and Deleteview

Hello everybody,

I'm working in a website using django. I would like that users could select and delete data introduced for them. I've found some information on the web and it seems that the ListView and DeleteView is what I need. However, when I try to do a ListView, it doesn't work and I don't know why.

Here my code:

models.py:

class Pozo(models.Model):
    # gid_pozo = models.IntegerField(primary_key=True)
    # gid_colector = models.ForeignKey(Colector)
    codpozo = models.CharField(max_length=20)
    coorx = models.DecimalField(max_digits=13, decimal_places=5)
    coory = models.DecimalField(max_digits=13, decimal_places=5)
    tipo = models.CharField(max_length=20)
    cotatrapa = models.DecimalField(max_digits=6, decimal_places=2, default=None, blank=True, null=True)
    profundidad = models.DecimalField(max_digits=6, decimal_places=2, default=None, blank=True, null=True)
    cotafondo = models.DecimalField(max_digits=6, decimal_places=2, default=None, blank=True, null=True)
    material = models.CharField(max_length=20)
    materialpates = models.CharField(max_length=20)
    diametro = models.DecimalField(max_digits=20, decimal_places=2, default=None, blank=True, null=True)
    largotrapa = models.DecimalField(max_digits=20, decimal_places=2, default=None, blank=True, null=True)
    seccionmayor = models.DecimalField(max_digits=5, decimal_places=0, default=None, blank=True, null=True)
    seccionmenor = models.DecimalField(max_digits=5, decimal_places=0, default=None, blank=True, null=True)
    numacometidas = models.DecimalField(max_digits=2, decimal_places=0, default=None, blank=True, null=True)
    origen = models.CharField(max_length=20)
    observaciones = models.CharField(max_length=255) 
    geom = models.PointField(srid=25830)
    objects = models.GeoManager()

views.py:

def PozoList(ListView):  
    model = Pozo
    template_name = 'cuencas/edicioncuenca.html'

template:

<select>
              {% for pozo in object_list %}
                  <option>{{ pozo.codpozo }}</option>
              {% endfor %}
</select>

And the result is a field without options. Does anybody know what I'm doing wrong?
Thank you very much!

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