建立在谷歌应用程序引擎表格自动完成 [英] Create Form Auto Complete in Google App Engine

问题描述

我想建立一个标签领域的自动完成功能样等应用程序引擎...任何想法如何，我应该去的过程？

I want to build a auto complete feature for a tags field like in SO on App Engine ... any idea how I should go about the process?

服务器端算法中？ - ？应该是什么逻辑那里自动完成

Server Side Algo? - What logic should be there for auto-complete?

App Engine的实现？ - 我应该是这个数据存储架构？

App Engine implementation? - What should be the Datastore schema for this?

推荐答案

嘿。我前几天就解决这个问题。数据存储模式其实并不重要，只要你有一个StringProperty领域，你想搜索。由于应用程序引擎不支持全文搜索的是，你必须去与某种形式的开始搜索，这是不是100％，但相当好用于查找标签。

Hey. I came around this question a few days ago. The datastore schema doesn't really matter as long as you have a StringProperty field that you'd like to search on. Since App Engine does not support full text searching yet, you'll have to go with some sort of a "starts with" search, which is not 100% but quite okay for looking up tags.

还有这是对谷歌I / O 2010年的code是用Java编写的，但原理是一样的做就如何落实在谷歌code博客上GAE基本搜索的讨论：<一href="http://google$c$c.blogspot.com/2010/05/google-app-engine-basic-text-search.html">http://google$c$c.blogspot.com/2010/05/google-app-engine-basic-text-search.html

There's a discussion on how to implement basic search on GAE on the Google Code blog which was done for Google I/O 2010. The code is written in Java but the principles are the same: http://googlecode.blogspot.com/2010/05/google-app-engine-basic-text-search.html

至于逻辑，以及这是完全取决于你。我看到，用以查询的每一个关键preSS，其他人使用之类的查询系统。但GAE的限制不允许LIKE查询。更多的讨论在这个线程：<一href="http://stackoverflow.com/questions/47786/google-app-engine-is-it-possible-to-do-a-gql-like-query">Google应用程序引擎：是否有可能做一个GQL LIKE查询

As to the logic, well this is totally up to you. I saw systems that use "starts with" queries on every key press, others use LIKE queries. But the limitations of GAE don't allow LIKE queries. More discussions in this thread: Google App Engine: Is it possible to do a Gql LIKE query?

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