MVC将控制器中的日期替换为空字符串

from datetime import datetime

class MyController:
    def __init__(self, data):
        self.data = data

    def process_data(self):
        for item in self.data:
            if item.get('date_field'):
                item['date_field'] = self.format_date(item['date_field'])
            else:
                item['date_field'] = ''

    def format_date(self, date):
        try:
            return date.strftime('%Y-%m-%d')
        except (ValueError, TypeError):
            return ''

# 示例数据
data = [
    {'date_field': datetime(2023, 1, 1)},
    {'date_field': None},
    {'date_field': datetime(2023, 2, 1)}
]

controller = MyController(data)
controller.process_data()
print(controller.data)

[
    {'date_field': '2023-01-01'},
    {'date_field': ''},
    {'date_field': '2023-02-01'}
]