如何迭代模板中SelectField的选项？ [英] How do I iterate over the options of a SelectField in a template?

问题描述

我在表单中有一个选择字段，现在我需要迭代此字段中的选项。

I have a select field in the form and now I need to iterate over options in this field.

{{form.myselect} } 给我这个：

<select name="myselect" id="id_myselect">
    <option value="" selected="selected">---------</option>
    <option value="2">Item 1</option>
    <option value="3">Item 2</option>
    ...
</select>

现在我需要为选项添加一些属性，因为我需要的是： p>

Now I need to add some attributes to the options and because of that what I need is:

<select name="myselect" id="id_myselect">
{% for x in form.myselect %}
    <option value="{{ x.id }}">{{ x.name }}</option>
{% endfor %}
</select>

但有一个错误：

Caught TypeError while rendering: 'BoundField' object is not iterable

我试过 form.myselect.all ， form.myselect.option_set 没有什么

推荐答案

我今天一直在努力解决这个问题，找到了解决方案。是的，您可以直接在模板中迭代选择标签的选项。以下是模板中的操作方法：

I've been struggling with this problem today and found the solution. Yes, you can iterate over options of the select tag directly in template. Here's how to do it in template:

<select id="id_Customer" name="Customer">
{% for x,y in form.fields.Customer.choices %}
    <option value="{{ x }}"{% if form.fields.Customer.value == x %} selected{% endif %}>{{ y }}</option>
{% endfor %}
</select>

在这种情况下，我有一个客户字段的形式，其选择设置如下： p>

In this case I have a Customer field in the form which has choices set up as follows:

class Some_Form(forms.Form):
    Customer = forms.ChoiceField(label=u'Customer')

    def __init__(self, *args, **kwargs):
        super(Some_Form, self).__init__(*args, **kwargs)
        self.fields['Customer'].choices = [(e.id, e.Customer) for e in Customers.objects.all()]

希望这有助于

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