Howard Lee Cloud

By Howard Lee 23 January 2016

It’s handy to use Grape-rails-routes gem. But I have a question about that. Why should I need to open the routing page localhost:3000/rails/info/routes_with_grape of grape-rails-routes gem first after I launching rails service and before using OAuth clients? If I don’t do this, my Oauth clients can’t access API services even access tokens in my clients are valid. README.markdown of Grape-rails-routes doesn’t mention that. Until now, I still find no answer

生活 Some wrong transaction data of vegetable product in Taiwan - 臺灣蔬菜交易歷史行情勘誤

By Howard Lee 23 January 2016

因為整理臺灣農產品交易歷史行情從1996年一月到2013年十月，發現網站的一些數據錯誤，例如特定交易市場的交易量有負數，或是當日總平均價是負

軟體工程 Update values of variables of gon gem with pagination

By Howard Lee 22 January 2016

Situation: When I clicking a next-page link for changing content of current page, the chart drawed by C3js doesn’t update with new data. 問題發生情況：當我按下網頁內容中的下一頁連結，網頁的折線圖並沒有跟著新資料重新繪製。 Environment: A rails app with

軟體工程 Using C3js to generate what simple charts you want 用C3js產生網頁簡易圖表

By Howard Lee 22 January 2016

C3js is easier than D3js for beginners who want to generate simple charts such as line ones, …,etc.. C3js relys on D3js so you must include D3js first in your web app before you start to use C3js. In the other words, you should include C3js and D3js into a web app. 因為尋找可以在網頁上更好呈現資訊內容

軟體工程 Make Postgres support full text search in Mandarin/Chinese for Rails 讓Postgres 開始支援中文全文檢索

By Howard Lee 11 January 2016

I use the gem pg_search in rails as a light-weight tool for full-text searching task of Postgres, but Postgres doesn’t support the function well in Mandarin/Chinese. After finding solutions, I take the combination of tools for full-text search in Postgres, which are pg_search gem, SCWS and zhparser. Doing it yourself according content in following links, you will setup successfully too. Remark at 20160131: This tutorial requires postgresql-server-devel-{VERSION} at Ubuntu and

軟體工程 Rails4使用Grape和Doorkeeper搭建API

By Howard Lee 05 January 2016

Rails4內使用Grape套件取得資料庫的資料不像Rails3使用Grape一樣簡單，我覺得有點複雜。原本打算只用Rails4和Grape

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