dashboard_forms.py 文件源码

def __init__(self, *args, **kwargs):
        super(SelectTowerForm, self).__init__(*args, **kwargs)
        # We create the choice field here in the init so that if the network
        # values change, the form will pick up the changes and not require the
        # server to be restarted.
        choices = []
        # We create a convoluted tower queryset so that towers that have never
        # synced (last_active = None) sort after active and inactive towers.
        the_past = datetime.datetime.now() - datetime.timedelta(days=10*365)
        all_towers = models.BTS.objects.all().annotate(
            new_last_active=Coalesce('last_active', Value(the_past))).order_by(
                '-new_last_active')
        for tower in all_towers:
            value = tower.id
            user_profile = models.UserProfile.objects.get(
                network=tower.network)
            abbreviated_uuid = tower.uuid[0:5]
            if tower.nickname:
                prefix = 'Tower "%s" - %s..' % (
                    tower.nickname, abbreviated_uuid)
            else:
                prefix = 'Tower %s..' % abbreviated_uuid
            display = '%s (%s)' % (prefix, user_profile.user.email)
            choices.append((value, display))
        self.fields['tower'] = forms.ChoiceField(
            label="Tower", choices=choices, required=False)
        # Set layout attributes.
        self.helper = FormHelper()
        self.helper.form_id = 'select-tower-form'
        self.helper.form_method = 'post'
        self.helper.form_action = '/dashboard/staff/tower-monitoring'
        self.helper.add_input(Submit('submit', 'Select'))
        self.helper.layout = Layout('tower')