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68
models/DataRender.js
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68
models/DataRender.js
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const User = require("./mongooseSchemas/User"); // 引入「使用者 (User)」資料庫表。
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const ServerStatus = require("../ServerStatus");
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/**
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* 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。
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*/
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const renderList = {
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"index": require("./renderModels/index"),
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"gallery": require("./renderModels/gallery"),
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"theme": require("./renderModels/theme"),
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"feedback": require("./renderModels/feedback"),
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"login": require("./renderModels/login"),
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"signup": require("./renderModels/signup"),
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"message_form": require("./renderModels/message_form"),
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"personal_page": require("./renderModels/personal_page"),
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"edit_personal_info": require("./renderModels/edit_personal_info"),
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"write_message": require("./renderModels/write_message"),
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"change_password": require("./renderModels/change_password"),
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"drawing": require("./renderModels/drawing"),
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"showcase": require("./renderModels/showcase"),
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"submit_theme": require("./renderModels/submit_theme"),
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"vote_theme": require("./renderModels/vote_theme")
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};
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/**
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* 插值資料給予者。
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* 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。
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* @param {string} source 頁面的模板來源名稱(Pug Template)。
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* @param {string} route 路由路徑。
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* @param {Express.Session} session Express 的 Session物件。
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* @param {CallbackFunction} callback 回呼函式。傳回錯誤訊息與插值資料。
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*/
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function DataRender(source, route, session, callback) {
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// 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。
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let _id = session.passport ? session.passport.user : null;
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// 建構 dataObject 物件
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let dataObject = {
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source: source,
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extendedStyle: source + "_extended.css",
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title: route,
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hasLogin: (_id !== undefined && _id !== null),
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username: null,
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notices: null,
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datas: {},
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haveSubmitThemeEvent: ServerStatus.status.submitThemeEvent,
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haveVoteThemeEvent: ServerStatus.status.voteThemeEvent
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};
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// 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)
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User.SetBasicInformation(_id, dataObject, function (err, dataObject) {
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// 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
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if (source in renderList) {
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// 透過source來取得該頁面的插值資料,也就是設定 dataObject.datas 內容。
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renderList[source].Render(dataObject, route, session, function (err, isSuccess) {
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if (err)
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callback(err, null);
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else
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callback(null, dataObject);
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});
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}
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// 若不包含在清單中的,則視為例外
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else {
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callback(new Error("找不到對應的插值物件或Pug模板。"), null);
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}
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});
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}
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module.exports.DataRender = DataRender;
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