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换文的三方观察员
原标题:Trigger observer of parent class on change

我写了一个时间表,在物体如“产品”发生变化时,在表格中储存活动。

我写了一位产品观察员,他用“日期后”和“日期之前”等方法,组成一个敏感的标识信息和相关数据。 这完全可行。

现在,每种产品都有许多变式,而且每一种变式都有许多价格。 然而,通常以同样的形式加以编辑。 但只有改变产品类别才使该观察员“在日期之前”启动。

我愿对变式进行修改,以启动相关产品的产品供应者,同样也促使价格发生变化,从而引发与价格相关的变式产品。

这与铁路23.3+的:功能不同。 我也试图依靠这一功能,但接触似乎并没有触发以前即时的观察方法。

你们怎样做?

问题回答

根据我目前的经验,应引起定期的反馈,而不是观察员的反馈。 由于这些差异略有不同。





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