Flask-Admin 自定义 Select2 Ajax 字段

Flask-Admin中使用自定义Select2 Ajax字段

python
# 安装Flask-Admin和Flask-SQLAlchemy
pip install Flask-Admin Flask-SQLAlchemy

python
from flask import Flask
from flask_sqlalchemy import SQLAlchemy
from flask_admin import Admin
from flask_admin.contrib.sqla import ModelView
app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///example.db'
app.config['SECRET_KEY'] = 'mysecretkey'
db = SQLAlchemy(app)
admin = Admin(app)
# 定义模型
class Item(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(50))
# 添加模型到Flask-Admin
admin.add_view(ModelView(Item, db.session))

python
from wtforms import StringField
from wtforms.widgets import Select
from flask_admin.model.fields import AjaxSelect2Field
class AjaxSelect2Example(StringField):
    widget = Select()
    def process_formdata(self, valuelist):
        if valuelist:
            self.data = valuelist[0]
        else:
            self.data = None
class MyModelView(ModelView):
    form_extra_fields = {
        'example_field': AjaxSelect2Example('Example Field', widget=Select(), allow_blank=True),
    }