在 Django CMS 中初始化 MultipleChoiceField

Question

我的模型中有一个CharField (displayed_fields)，我在我的表单中显示为MultipleChoiceField。目前，即使模型的displayed_fields 不为空，表单也会在未选择任何内容的情况下加载。

我希望表单初始化为之前选择的项目。到目前为止，我已经尝试将intial 的不同值（包括initial=ExamplePlugin.EMAIL_COLUMN 和initial={'displayed_fields': ['name', 'office', 'phone']}）添加到forms.py 的字段声明中，这似乎并没有改变任何东西。是否可以像这样初始化它，如果没有，是否有比CharField 更好的模型可以使用？

models.py:

class ExamplePlugin(CMSPlugin):
    NAME_COLUMN = 'name'
    OFFICE_COLUMN = 'office'
    PHONE_COLUMN = 'phone'
    EMAIL_COLUMN = 'email'
    TITLE_COLUMN = 'title'

    COLUMN_CHOICES = (
        (NAME_COLUMN, 'First and Last Name'),
        (OFFICE_COLUMN, 'Office Location'),
        (PHONE_COLUMN, 'Phone Number'),
        (EMAIL_COLUMN, 'Email Address'),
        (TITLE_COLUMN, 'Title'),
    )

    displayed_fields = models.CharField(blank=False, verbose_name='Fields to show', max_length=255)

forms.py:

class ExampleForm(ModelForm):

    def __init__(self, *args, **kwargs):
        super(ExampleForm, self).__init__(*args, **kwargs)

    displayed_fields = MultipleChoiceField(choices=ExamplePlugin.COLUMN_CHOICES, help_text="Select columns that you would like to appear.")

    class Meta:
        model = ExamplePlugin

Answer 1

我认为你应该这样做：

class ExampleForm(ModelForm):
    displayed_fields = MultipleChoiceField(choices=ExamplePlugin.COLUMN_CHOICES, help_text="Select columns that you would like to appear.", initial=['name', 'office', 'phone'])

    def __init__(self, *args, **kwargs):
        super(ExampleForm, self).__init__(*args, **kwargs)

    class Meta:
        model = ExamplePlugin

MultipleChoiceField 接受一个列表作为它的默认值，我猜。