Question

我有以下两个模型

class ModelOne(models.Model):
    mod_desc = models.CharField(max_length=25)
    is_active = models.BooleanField(default=True)

class ModelTwo(models.Model):
    another_desc = models.CharField(max_length=25)
    is_active = models.BooleanField(default=True)
    modone = models.ForeignKey(ModelOne)

以下是ModelTwoAdmin的管理员代码

class ModelTwoAdmin(admin.ModelAdmin):
    def formfield_for_foreignkey(self,db_field,request, **kwargs):
        if db_field.name == 'modone':
            kwargs['queryset'] = ModelOne.objects.exclude(is_active=False)

    fieldsets = [
        ('String 1', {'fields' : ['another_desc','modone']}),
        ('String 2', {'fields' : ['is_active']}),
    ]

我的目标是过滤掉is_active为False的ModelOne条目。但是，上面的代码返回错误 - 第7行在堆栈跟踪中突出显示，但代码块中包含**：

Django Version:     1.4
Exception Type:     KeyError
Exception Value:    

"Key 'modone' not found in Form"

Exception Location:     c:\Python\Python2.7\App\lib\site-packages\django\forms\forms.py in __getitem__, line 109

1   <fieldset class="module aligned {{ fieldset.classes }}">
2   {% if fieldset.name %}<h2>{{ fieldset.name }}</h2>{% endif %}
3   {% if fieldset.description %}
4   <div class="description">{{ fieldset.description|safe }}</div>
5   {% endif %}
6   {% for line in fieldset %}
**7     <div class="form-row{% if line.fields|length_is:'1' and line.errors %} errors{% endif %}{% for field in line %}{% if field.field.name %} field-{{ field.field.name }}{% endif %}{% endfor %}">**
8   {% if line.fields|length_is:'1' %}{{ line.errors }}{% endif %}
9   {% for field in line %}
10  <div{% if not line.fields|length_is:'1' %} class="field-box{% if field.field.name %} field-{{ field.field.name }}{% endif %}{% if not field.is_readonly and field.errors %} errors{% endif %}"{% endif %}>
11  {% if not line.fields|length_is:'1' and not field.is_readonly %}{{ field.errors }}{% endif %}
12  {% if field.is_checkbox %}
13  {{ field.field }}{{ field.label_tag }}
14  {% else %}
15  {{ field.label_tag }}
16  {% if field.is_readonly %}
17  <p>{{ field.contents }}</p>

如何过滤掉不活跃的ModelOne？

Answer 1

问题是您指定了两次None字段集。第二个是覆盖第一个，因此表单中唯一的字段是is_active。给第二个None一个实际的字符串名称，或者只将两个字段集合并为一个。

Answer 2

formfield_for_foreignkey方法中缺少return语句。 return语句应为：

return super(ModelTwo, self).formfield_for_foreignkey(db_field, request, **kwargs)

删除Django Admin中的特定外键？

2 个答案: