如何将字符串模型字段转换为 Flask-Admin 中的 select 输入？

Question

我的 SQLAlchemy 模型中有一个字符串字段，我想在 Flask-Admin 中公开一个带有几个选项的 select 框，而不是标准文本字段。

class MyModel(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    my_field = db.Column(db.String(128))  # Field I would like to be choices


class MyModelView(ModelView):
    """
    Admin manager for MyModel
    """

    # Which option should I use here?

    def __init__(self):
        super(MyModelView, self).__init__(MyModel, db.session)

Answer 1

结果是 form_overrides 和 form_args 的组合。 form_overrides 告诉表单使用 select 字段，form_args 允许您传递选项和其他选项。

class MyModel(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    my_field = db.Column(db.String(128))


class MyModelView(ModelView):
    """
    Admin manager for MyModel
    """

    form_overrides = dict(
        my_field=SelectField
    )
    form_args = dict(
        my_field=dict(
            choices=[
                ('choice_1', 'Choice 1'),
                ('choice_2', 'Choice 2')
            ]
        )
    )
    def __init__(self):
        super(MyModelView, self).__init__(MyModel, db.session)

Answer 2

您通过在模型视图中使用 'form_choices' 来实现此功能，如下例基于您问题中嵌入的代码说明：

   class MyModel(db.Model):
       id = db.Column(db.Integer, primary_key=True)
       my_field = db.Column(db.String(128))  # Field I would like to be choices


    class MyModelView(ModelView):
        """
        Admin manager for MyModel
        """

            form_choices = {
                 'my_field': [
                     ('choice_1', 'Choice 1'),
                     ('choice_2', 'Choice 2'),
                     ('choice_3', 'Choice 3'),
                     ('choice_4', 'Choice 4'),
                     ('choice_5', 'Choice 5')
                ]
           }

        def __init__(self):
            super(MyModelView, self).__init__(MyModel, db.session)

参考：

Flask-Admin documentation:

You can restrict the possible values for a text-field by specifying a list of select choices:

form_choices = { 'title': [ ('MR', 'Mr'), ('MRS', 'Mrs'), ('MS', 'Ms'), ('DR', 'Dr'), ('PROF', 'Prof.') ] }

如何将字符串模型字段转换为 Flask-Admin 中的 select 输入？

How can I turn a string model field into a select input in Flask-Admin?

python

flask

flask-sqlalchemy

flask-admin