Firestore搜索-喜欢 [英] Firestore Search - LIKE

问题描述

我要搜索嵌套在集合中的文档中的"displayName"，或更具体地说，数据如下:

I want to search the "displayName" in documents nested within a collection, or more specifically the data is as follows:

用户-> $ idstring-> displayName

users -> $idstring -> displayName

我已经使用AngularFire提出了以下内容，但是它对我来说仍然不起作用..我需要对照val(用户输入的)的前3个字符检查 displayName 并带回开始的结果有了这一点，我需要一种类似于LIKE的搜索操作，firestore可以做到这一点..到目前为止，它几乎只返回了我的用户集中的所有内容

Ive come up with the following using AngularFire but its still not quite working for me.. I need to check displayName against the first 3 chars of val (user entered) and bring back results that start with that, I need a kind of LIKE search operation to occur, is this possible with firestore.. so far its just returning almost everything in my users collection

this.itemsCollection = this.aft.collection<iUser>('users', ref => ref.orderBy("displayName").startAt(val))

推荐答案

如 Cloud Firestore文档:

Cloud Firestore不支持本机索引编制或搜索文本文档中的字段.此外，将整个收藏下载到在客户端搜索字段是不切实际的.

Cloud Firestore doesn't support native indexing or search for text fields in documents. Additionally, downloading an entire collection to search for fields client-side isn't practical.

要启用对数据的全文搜索，您需要使用第三方搜索服务，例如 Algolia或 ElasticSearch .

And to enable full text search of your data, you'd need to use a third-party search service like Algolia or ElasticSearch.

该文档实际上提供了有关如何将Algolia与Firebase集成的指南a>.

The documentation actually provides a guide on how to integrate Algolia with Firebase.

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