如何按计划从Firebase数据库中删除数据 [英] How to delete data from a Firebase database on a schedule

问题描述

我创建了一个简单的类似于聊天室的Apache Cordova(HTML)应用程序，允许用户在聊天室中添加带有自定义用户名的消息.

I have created a simple chatroom-like Apache Cordova (HTML) application that allows users to add their own messages with custom usernames in the chatroom.

一段时间后，这些消息加起来，为了避免混乱，我每天必须进入实际的数据库中删除它们.

The messages add up after a while and i have to go into the actual database to delete them every day to avoid clutter.

有什么方法可以创建规则或JavaScript函数来每天每天的特定时间清除数据?例如，在上午9点，数据库将清除前一天和晚上的所有内容，并重新开始新的一天.

Is there any way i can create a rule or a javascript function to clear the data at a certain time every day? For instance at 9 am the database would clear all its content from the previous day and night and start the day fresh.

感谢您的帮助.

推荐答案

从外观上看，目前有两种类似的解决方案: Later.js是否按计划执行功能?

From the looks of it there are two current similar solutions: Creating Scheduled Task in JavaScript || Later.js execute Function on Schedule?

我不熟悉Later.js，所以在这里我无济于事.

I am unfamiliar with later.js so I can't help you there.

使用gdoron的代码，我相信代码应该看起来像这样:

Using gdoron's code, I believe the code should look similar to this:

function foo(){
    var day =new Date().getDay();
    var hours =new Date().getHours();

    if (day === 0 && hours >12 && hours < 13)  // day is a 0 index base
                                               // sunday between 12:00 and 13:00

//What you want to do goes here
var fredRef = new Firebase('yourDirectoryUrl')
fredRef.remove();

}

setInterval(foo, 3600000); // one hour check.

注意:

记住要包含

Notes:

Remember to include

<script src='https://cdn.firebase.com/js/client/2.2.1/firebase.js'></script>

此外，请记住，这将清除所有内容.

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