Question

我正在编写四个表格:

class Product(models.Model):
    active = models.BooleanField(default=True)
    name = models.CharField(max_length=40, unique=True)
    acronym = models.CharField(max_length=3, unique=True)

class Alarm(models.Model):
    active = models.BooleanField(default=True)
    product = models.ForeignKey(Product) #NEW
    name = models.CharField(unique=True, max_length=35)
    image_file = models.CharField(max_length=30)

class File(models.Model):
    reference = models.CharField(max_length=40)
    product = models.ForeignKey(Product, related_name= item_product ) #NEW
    created = models.DateTimeField(default=datetime.now)
    created_by = models.ForeignKey(User)

class FileAlarm(models.Model):
    file = models.ForeignKey(File)
    created = models.DateTimeField()
    created_by = models.ForeignKey(User, related_name="alarm_created_by")
    alarm_date = models.DateField(default=datetime.now)
    alarm_type = models.ForeignKey(Alarm)
    alarm_comment = models.CharField(max_length=80, blank=True, null=True)

无需改动。文件Alarm.alarm_type (这意味着queryset in _init nkt work)因此,我需要填满choices=ps of Choice Field。我很想知道,如何做到这一点,因为我只想发出以下警报:active,并与<条码><<>>>>产品/代码”挂钩,该编码与<条码>链接。

class FileAlarmForm(ModelForm):

    def __init__(self,file,*args,**kwargs):
        super(FileAlarmForm, self).__init__(*args, **kwargs)
        self.fields[ alarm ].queryset = Alarm.objects.filter(product__id=file.product_id)

    alarm_type = ChoiceField(required=True, widget=Select(attrs={ onChange : updateAlarmImage }))  # << ?!?

Answer 1

接下来是:

class FileAlarmForm(ModelForm):

    def __init__(self,file,*args,**kwargs):
        super(FileAlarmForm, self).__init__(*args, **kwargs)
        p = Product.objects.get(id=file.product_id)
        self.fields[ alarm_type ].widget = Select(attrs={ onchange : updateAlarmImage })
        self.fields[ alarm_type ].queryset = Alarm.objects.filter(product=p)

友情链接