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Alan
2018-02-26 14:09:18 +08:00
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models/DataRender.js Normal file
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const User = require("./mongooseSchemas/User"); // 引入「使用者 (User)」資料庫表。
const ServerStatus = require("../ServerStatus");
/**
* 插值來源對應表。可以迅速的比對使用者要求的頁面需要什麼樣的插值。
*/
const renderList = {
"index": require("./renderModels/index"),
"gallery": require("./renderModels/gallery"),
"theme": require("./renderModels/theme"),
"feedback": require("./renderModels/feedback"),
"login": require("./renderModels/login"),
"signup": require("./renderModels/signup"),
"message_form": require("./renderModels/message_form"),
"personal_page": require("./renderModels/personal_page"),
"edit_personal_info": require("./renderModels/edit_personal_info"),
"write_message": require("./renderModels/write_message"),
"change_password": require("./renderModels/change_password"),
"drawing": require("./renderModels/drawing"),
"showcase": require("./renderModels/showcase"),
"submit_theme": require("./renderModels/submit_theme"),
"vote_theme": require("./renderModels/vote_theme")
};
/** 
* 插值資料給予者。
* 依照使用者所給的路由位置,此函式就會回傳相對應的插值物件。
* @param {string} source 頁面的模板來源名稱(Pug Template)。
* @param {string} route 路由路徑。
* @param {Express.Session} session Express 的 Session物件。
* @param {CallbackFunction} callback 回呼函式。傳回錯誤訊息與插值資料。
*/
function DataRender(source, route, session, callback) {
// 檢查Session中是否有passport欄位若有則嘗試取得user(資料庫中的_id)若無則設為null。
let _id = session.passport ? session.passport.user : null;
// 建構 dataObject 物件
let dataObject = {
source: source,
extendedStyle: source + "_extended.css",
title: route,
hasLogin: (_id !== undefined && _id !== null),
username: null,
notices: null,
datas: {},
haveSubmitThemeEvent: ServerStatus.status.submitThemeEvent,
haveVoteThemeEvent: ServerStatus.status.voteThemeEvent
};
// 嘗試取得資料來設定與目標使用者有關的基本資料(Username與通知數)
User.SetBasicInformation(_id, dataObject, function (err, dataObject) {
// 若該路由有在清單中則透過指定的插值方法來為dataObject加入其所需要的資料
if (source in renderList) {
// 透過source來取得該頁面的插值資料也就是設定 dataObject.datas 內容。
renderList[source].Render(dataObject, route, session, function (err, isSuccess) {
if (err)
callback(err, null);
else
callback(null, dataObject);
});
}
// 若不包含在清單中的,則視為例外
else {
callback(new Error("找不到對應的插值物件或Pug模板。"), null);
}
});
}
module.exports.DataRender = DataRender;