Git 指令精簡概覽

高見龍 Git 課程「人生不能重來，但 Git 可以 」投影片

Why IHttpActionResult

Action Results in Web API 2 The IHttpActionResult interface was introducted in Web API 2. Essentially, it defines an HttpResponseMessage factory. Here are some advantages of using the IHttpActionResult interface:

• Simplifies unit testing your controllers.
• Moves common logic for creating HTTP responses into separate classes.
• Makes the intent of the controller action clearer, by hiding the low-level details of constructing the response.

other advantages:

• Respecting to single responsibility principle: cause action methods have the responsibility of serving the HTTP requests and should not involve in creating the HTTP response messages.
• Useful implementations already defined in the System.Web.Http.Results namely: 
• Ok
• NotFound
• Exception
• Unauthorized
• BadRequest
• Conflict
• Redirect
• InvalidModelState
• 完整列表
• Uses Async and Await by default.
• Easy to create own ActionResult just by implementing ExecuteAsync method.
• you can use ResponseMessageResult ResponseMessage(HttpResponseMessage response) to convert HttpResponseMessage to IHttpActionResult.

Entity Framework使用資料庫View並設定關聯

Entity Model除可用資料表外也可加入資料庫檢視(View)，但需先正確設定View的Entity Key，如此關聯建立時才知如何對應兩邊的資料：

建立關聯時在關聯線上點兩下滑鼠，還需指定那一邊是主要(Principal)、那邊是相依的(Dependent)：

Kendo UI Grid 匯出 PDF 中文變方塊解法

• 第一階段：先讓Kendo Grid可以匯出PDF

1.在Grid上顯示匯出PDF按鈕
$("#grid").kendoGrid({
    //...
    toolbar: ["pdf"],
    pdf: {
        allPages: true
    }
}); 

2.載入 pako_deflate.min.js 啟用壓縮 PDF 功能
<script src="Kendo/js/pako_deflate.min.js"></script>

• 第二階段：自訂中文字型

1.定義支援Unicode的TrueType中文字型，以下以DFKai-SB為例：
@font-face {
    font-family: "DFKai-SB";
    src: url("Kendo/styles/fonts/KaiU/kaiu.ttf") format("truetype");
}

2.透過CSS讓Kendo Grid(.k-grid)使用自訂的DFKai-SB字型：
.k-grid {
    font-family: "DFKai-SB";
}