0

我对模型有疑问，例如我有

fallBack = models.CharField(max_length=100, choices=FALLBACK,  default = 99,blank = True,null = True)
FALLBACK = (
    (u'99','-'),
    (u'standard', u'Standard TPF deactivation/exlusion applies'),
    (u'fallback', u'Fallback script provided'),
    (u'na',u'N/A'),
    (u'other',u'Other'),
    )

如果我将在模板中使用

{% for obj in form.forms %}
    {{obj.fallBack}}
{% endfor %}

它会返回这样的东西

<select name="form-0-fallBack" id="id_form-0-fallBack">
    <option value="">---------</option>
    <option value="99" selected="selected">-</option>
    <option value="standard">Standard TPF deactivation/exlusion applies</option>
    <option value="fallback">Fallback script provided</option>
    <option value="na">N/A</option>
    <option value="other">Other</option>
</select>

但我想做这样的事情：

<select **onchange="javascript:make()"** name="form-0-fallBack" id="id_form-0-fallBack">
    <option value="">---------</option>
    <option value="99" selected="selected">-</option>
    <option value="standard">Standard TPF deactivation/exlusion applies</option>
    <option value="fallback">Fallback script provided</option>
    <option value="na">N/A</option>
    <option value="other">Other</option>
</select>

怎么做 ？？我可以在模板中写这个第二个选项而不是 {{obj.fallBack}} 但是我的 formset.is_valid() 不起作用，什么时候我会做这样的事情：

1)I will choose from fallBack second option(Standard TPF deactivation/exlusion applies) 
2) submit,
3) I have some error in other place in template 
4) Then my obj.fallBack returning to default option (99 , -)

感谢帮助

4

2 回答 2

0

查看 django 文档Widgets

widget=forms.Select(attrs={'onchange': 'javascript:make()'})

这看起来像ModelForm，查看如何为ModelForms指定小部件

于 2012-09-27T11:01:44.837 回答
0

好的，因此使用此属性创建新字段而不是 charfield

widget=forms.Select(attrs={'onchange': 'javascript:make()'})

感谢帮助

于 2012-09-27T13:45:34.887 回答