如何将所有剩余的模型字段添加到 django 脆表单布局？答案

【问题标题】：How to add all remaining model fields to a django crispy form layout?如何将所有剩余的模型字段添加到 django 脆表单布局？
【发布时间】：2019-12-18 00:52:03
【问题描述】：

我正在使用django-crispy-forms，并且我有一个包含许多字段的表单。我只想自定义其中的几个字段，例如：

class ExampleForm(forms.ModelForm):
    model = ExampleModel
    fields = "__all__" # tons of fields

    def __init__(self, *args, **kwargs):
        self.helper = FormHelper()
        self.helper.layout = Layout(
            Field('readonlyfield', readonly=True),
            # Add rest of fields here without explicitly typing them all out
        )

如果我呈现此表单，它将只有一个字段。如何使用默认布局值/设置添加其余部分？

【问题讨论】：

标签： django-crispy-forms

【解决方案1】：

我认为最好的方法是使用get_fields method of Django's Option class，它在您的模型的._meta 属性中可用，并结合star-unpacking。像这样：

class ExampleForm(forms.ModelForm):
    model = ExampleModel
    fields = "__all__" # tons of fields

    def __init__(self, *args, **kwargs):
        self.helper = FormHelper()

        # This list contains any fields that you are explicitly typing out / adding to the Layout
        manually_rendered_fields = ['readonlyfield',]

        # Next, create an array of all of the field name BESIDES the manually_rendered_fields
        all_other_fields = [f.name for f in self.model._meta.get_fields() if f not in manually_rendered_fields]

        self.helper.layout = Layout(
            Field('readonlyfield', readonly=True),
            # Add rest of fields here without explicitly typing them all out
            *all_other_fields,
            # if you needed to provide custom kwargs for the other fields, you could do something like this instead:
            *[Field(f, kwarg1=True, kwarg2=False) for f in all_other_fields],
        )

【讨论】：