本文介绍了Firestore按日期范围查询的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我需要查询日期范围内的长收藏集的帮助.请参阅以下示例文档.我想使用日期范围查询startTime字段.
I need the help to query long collection with date range. See the below example document. I wanna query startTime field using date range.
推荐答案
因为我将dueDate
字段存储为"timestamp", (而不是字符串或数字),我这样做是为了获得到期日为2017年的发票凭证:
Since I have the dueDate
field stored as "timestamp" (and NOT as string or number) on Cloud Firestore, I did this to get the invoice documents with a due date on 2017:
let start = new Date('2017-01-01');
let end = new Date('2018-01-01');
this.afs.collection('invoices', ref => ref
.where('dueDate', '>', start)
.where('dueDate', '<', end)
);
注意::dueDate
字段与Date()对象一起存储在firebase中.例如:this.doc.dueDate = new Date('2017-12-25')
NOTE: dueDate
field was stored at firebase with a Date() object. e.g.: this.doc.dueDate = new Date('2017-12-25')
这篇关于Firestore按日期范围查询的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!