简体繁体 English

处理提醒电子邮件的正确方法是什么？

[英]What is the proper way to handle reminder emails?

原文 2016-01-19 10:54:52 2 1 ruby-on-rails/ email

My rails app will send a reminder email if a user has not composed any new posts in three days. 如果用户三天内未撰写任何新帖子，我的Rails应用程序将发送一封提醒电子邮件。 This is defined as a rake task that is scheduled. 这被定义为计划的耙任务。

The task is scheduled every day. 该任务是每天安排的。 Of course, the task should only fire once for every user. 当然，该任务仅应为每个用户触发一次。 A user should get it on the third day and then never again. 用户应在第三天获得，然后再也不会。 On the tenth day, I might fire a totally different email. 在第十天，我可能会发送完全不同的电子邮件。

Where and how to let the app know that a user has received the reminder? 如何在哪里以及如何让应用知道用户已收到提醒？
Where, when and how to clean out the set "received reminder status" (if the user composes a new post)? 在哪里，何时何地清除设置的“收到的提醒状态”（如果用户撰写新帖子）？
How to go about multiple reminder emails (eg after 5, 10, 15 days)? 如何处理多封提醒电子邮件（例如5、10、15天之后）？

I know that adding a column called received_reminder to the user table is an option. 我知道，添加一个名为列received_reminder用户表是一个选项。 When you fire the task, you would change received_reminder to true and clean it out again when a user creates a new post. 当你火了任务，你会改变received_reminder到true和当用户创建一个新的岗位重新清理出来。 Multiple reminders would mean a new column for every reminder. 多个提醒将意味着每个提醒都有一个新列。 Eg received_reminder_5days etc. – this seems not to DRY in opinion and I suspect that there might be a better way generally. 例如， received_reminder_5days等-DRY认为这似乎不可行，我怀疑通常可能会有更好的方法。

What is the best practice in terms of reminder emails? 关于提醒电子邮件的最佳做法是什么？

1 个解决方案

You even do not need an extra field. 您甚至不需要一个额外的字段。 You can set up an array reminder_days = [3,5,10,15] (for example) and then once a day check whether the age d (in days) of the users last post (which can be obtained from the database) is a member of reminder_days . 您可以设置一个数组reminder_days = [3,5,10,15] （例如），然后每天检查一次用户最近一次发布的年龄d （以天为单位）（可以从数据库中获取） reminder_days的成员。 If it is, you send a reminder. 如果是，则发送提醒。 This reminder is the n+1 th reminder if n is the index of d in the array reminder_days . 如果n是dicker_days数组中d的索引，则此提醒为第n+1次reminder_days 。

To be really safe even in the case that the process of daily sending out reminder emails is interrputed, you could store the numbers of reminders that have already been sent in a field reminder_count . 要想真正安全的，即使在情况下，每天发出提醒邮件的过程interrputed，你可以存储已经在现场发送提醒的数量reminder_count 。 This field is set to 0 whenever the user creates a new post, and it is increased whenever a reminder is sent. 每当用户创建新帖子时，此字段都设置为0；每当发送提醒时，该字段就会增加。 With this field, you can check at any time whether a reminder still needs to be sent today or not (check whether n==reminder_count ). 使用此字段，您可以随时检查是否仍需要今天发送n==reminder_count （检查是否n==reminder_count ）。