python - 尝试让 optgroup 标 checkout 现在 Django 管理内联中

Question

这是迄今为止我认为可行的方法，但我收到了此错误:

Template error

In template /usr/lib/python2.7/site-packages/django/contrib/admin/templates/admin/edit_inline/tabular.html, error at line 50
Caught TypeError while rendering: render_option() takes exactly 4 arguments (23 given)
40            {% endspaceless %}
41          </td>
42          {% for fieldset in inline_admin_form %}
43            {% for line in fieldset %}
44              {% for field in line %}
45                <td class="{{ field.field.name }}">
46                {% if field.is_readonly %}
47                    <p>{{ field.contents }}</p>
48                {% else %}
49                    {{ field.field.errors.as_ul }}
50                    {{ field.field }}  <--- error here

admin.py中的代码

def get_construct_choices():
    construct_request_choices = Construct.objects.all().order_by('family','promotor','additional_mutation')
    construct_request_choices = itertools.groupby(construct_request_choices, key=lambda x:str(x.family))
    choices = []
    for family, group in construct_request_choices:
        choices.append((family, [str(val) for val in group]))
    print choices
    return choices

class ConstructRequestCustomForm(forms.ModelForm):
    class Meta:
        model = ConstructRequest
    construct = forms.ChoiceField(choices=get_construct_choices())

class ConstructRequestInline(admin.TabularInline):
    model = ConstructRequest
    form = ConstructRequestCustomForm
    extra = 1

class RequestAdmin(make_DefaultAdminAuditTable(Request)):
    inlines = (ConstructRequestInline,)

Answer 1

如果您使用 choices 的命名组，每个组的第二个元素应该是 2 元组的可迭代。文档中的示例是:

CHOICES = (
    ('Audio', (
            ('vinyl', 'Vinyl'),
            ('cd', 'CD'),
        )
    ),
    ('Video', (
            ('vhs', 'VHS Tape'),
            ('dvd', 'DVD'),
        )
    ),
    ('unknown', 'Unknown'),
)

在你的代码中，你正在做

    choices.append((family, [str(val) for val in group]))

所以看起来第二个元素是字符串列表，而不是二元组列表。如果你这样做，它可能会起作用

    choices.append((family, [(str(val), str(val)) for val in group]))

或者，如果您希望显示值与数据库中存储的值不同，您可能需要稍微更改它。

最后，由于 get_construct_choices 访问数据库，因此最好在表单的 __init__ 方法中设置选项。否则，选择将在代码加载时加载，但不会更新。

class ConstructRequestCustomForm(forms.ModelForm):
    class Meta:
        model = ConstructRequest

    def __init__(self, *args, **kwargs):
        super(ConstructRequestCustomForm, self).__init__(*args, **kwargs)
        self.fields['construct'].choices = get_construct_choices()