django - 从ModelForm删除字段

Question

我有一个简单的ModelForm:

class MyForm(ModelForm):

    def __init__(self, *args, **kwargs):
        super(MyForm, self).__init__(*args, **kwargs)
        del self.fields['name']

如您所见，我尝试从表单的字段列表中删除一个字段(该字段明确存在于模型中)，但出现异常:

TemplateSyntaxError at [..]

Caught an exception while rendering: "Key 'name' not found in Form"

我没有编写自定义表单，因此发生错误的模板是:

/templates/admin/includes/fieldset.html, error at line 4

有任何想法吗？

- 更新 -

该问题仅出现在管理区域中。

-更新2-

也许跟踪转储提供了更多信息:

Original Traceback (most recent call last):
  File "/Library/Python/2.5/site-packages/django/template/debug.py", line 71, in render_node
    result = node.render(context)
  File "/Library/Python/2.5/site-packages/django/template/defaulttags.py", line 155, in render
    nodelist.append(node.render(context))
  File "/Library/Python/2.5/site-packages/django/template/defaulttags.py", line 239, in render
    value = bool_expr.resolve(context, True)
  File "/Library/Python/2.5/site-packages/django/template/__init__.py", line 546, in resolve
    obj = self.var.resolve(context)
  File "/Library/Python/2.5/site-packages/django/template/__init__.py", line 687, in resolve
    value = self._resolve_lookup(context)
  File "/Library/Python/2.5/site-packages/django/template/__init__.py", line 722, in _resolve_lookup
    current = current()
  File "/Library/Python/2.5/site-packages/django/contrib/admin/helpers.py", line 81, in errors
    return mark_safe(u'\n'.join([self.form[f].errors.as_ul() for f in self.fields]).strip('\n'))
  File "/Library/Python/2.5/site-packages/django/forms/forms.py", line 105, in __getitem__
    raise KeyError('Key %r not found in Form' % name)
KeyError: "Key 'name' not found in Form"

在管理区域中，我使用了Grapelli-Theme。也许这与问题有关？

Answer 1

我有同样的问题。这就是我在新的Django(主干)中使其工作的方式:

class MyModelAdmin(admin.ModelAdmin):
    # Your stuff here..

    def get_form(self, request, obj=None, **kwargs):
        if request.user.is_staff: # condition
            self.exclude = ('field',)
        return super(PublishAdmin, self).get_form(request, obj=obj, **kwargs)

通过覆盖 get_form方法并将逻辑放在此处，您可以选择要显示的 Form。在上面，当满足条件时，我已经显示了标准表格。