14 Django_forms组件之ChoiceField类型

如果想要灵活应用ChoiceField，那么请看如下：

class TransactionRecord(ActiveBaseModel):
    """ 交易记录 """
    charge_type_class_mapping = {
        1: "success",
        2: "danger",
        3: "default",
        4: "info",
        5: "primary",
    }
    charge_type_choices = ((1, "充值"), (2, "扣款"), (3, "创建订单"), (4, "删除订单"), (5, "撤单"),)

class ChargeModelForm(BootStrapForm, forms.ModelForm):
    # 方式1：
    # 静态变量（程序启动，就加载到内存中了）
    charge_type = forms.ChoiceField(
        label="类型",
        choices=[(1, '充值'), (2, '扣款')],  # 只适合固定的数据，不适合去数据表中获取数据
    )
    # creator = forms.ChoiceField(
        # label='管理员',
        # choices=models.Administrator.objects.filter(id__gt=1).values_list("id", "username")
    # )

    class Meta:
        model = models.TransactionRecord
        fields = ['charge_type', 'amount']

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)

        # 方式2：
        # 每次实例化对象试，都会重新获取数据
        # self.fields['charge_type'].choices = [(1, '扣款'), (2, '充值')]