MongoDB學(xué)習(xí)筆記(三) 在MVC模式下通過Jqgrid表格操作MongoDB數(shù)據(jù)
在上一篇MongoDB學(xué)習(xí)筆記 中筆者帶領(lǐng)我們學(xué)習(xí)了如何通過samus驅(qū)動(dòng)實(shí)現(xiàn)基本數(shù)據(jù)操作,本篇中筆者帶領(lǐng)我們學(xué)習(xí)在MVC模式下通過Jqgrid表格操作MongoDB數(shù)據(jù)。
看到下圖,是通過Jqgrid實(shí)現(xiàn)表格數(shù)據(jù)的基本增刪查改的操作。表格數(shù)據(jù)增刪改是一般企業(yè)應(yīng)用系統(tǒng)開發(fā)的常見功能,不過不同的是這個(gè)表格數(shù)據(jù)來源是非關(guān)系型的數(shù)據(jù)庫MongoDB。nosql雖然概念新穎,但是MongoDB基本應(yīng)用實(shí)現(xiàn)起來還是比較輕松的,甚至代碼比基本的ADO.net訪問關(guān)系數(shù)據(jù)源還要簡潔。由于其本身的“非關(guān)系”的數(shù)據(jù)存儲(chǔ)方式,使得對象關(guān)系映射這個(gè)環(huán)節(jié)對于MongoDB來講顯得毫無意義,因此我們也不會(huì)對MongoDB引入所謂的“ORM”框架。
下面我們將逐步講解怎么在MVC模式下將MongoDB數(shù)據(jù)讀取,并展示在前臺Jqgrid表格上。這個(gè)“簡易系統(tǒng)”的基本設(shè)計(jì)思想是這樣的:我們在視圖層展示表格,Jqgrid相關(guān)Js邏輯全部放在一個(gè)Js文件中,控制層實(shí)現(xiàn)了“增刪查改”四個(gè)業(yè)務(wù),MongoDB的基本數(shù)據(jù)訪問放在了模型層實(shí)現(xiàn)。下面我們一步步實(shí)現(xiàn)。
一、實(shí)現(xiàn)視圖層Jqgrid表格邏輯
首先,我們新建一個(gè)MVC空白項(xiàng)目,添加好jQuery、jQueryUI、Jqgrid的前端框架代碼:
然后在Views的Home文件夾下新建視圖“Index.aspx”,在視圖的body標(biāo)簽中添加如下HTML代碼:
- <div>
- <table id="table1">
- </table>
- <div id="div1">
- </div>
- </div>
接著新建Scripts\Home文件夾,在該目錄新建“Index.js”文件,并再視圖中引用,代碼如下:
- jQuery(document).ready(function () {
- //jqGrid初始化
- jQuery("#table1").jqGrid({
- url: '/Home/UserList',
- datatype: 'json',
- mtype: 'POST',
- colNames: ['登錄名', '姓名', '年齡', '手機(jī)號', '郵箱地址', '操作'],
- colModel: [
- { name: 'UserId', index: 'UserId', width: 180, editable: true },
- { name: 'UserName', index: 'UserName', width: 200, editable: true },
- { name: 'Age', index: 'Age', width: 150, editable: true },
- { name: 'Tel', index: 'Tel', width: 150, editable: true },
- { name: 'Email', index: 'Email', width: 150, editable: true },
- { name: 'Edit', index: 'Edit', width: 150, editable: false, align: 'center' }
- ],
- pager: '#div1',
- postData: {},
- rowNum: 5,
- rowList: [5, 10, 20],
- sortable: true,
- caption: '用戶信息管理',
- hidegrid: false,
- rownumbers: true,
- viewrecords: true
- }).navGrid('#div1', { edit: false, add: false, del: false })
- .navButtonAdd('#div1', {
- caption: "編輯",
- buttonicon: "ui-icon-add",
- onClickButton: function () {
- var id = $("#table1").getGridParam("selrow");
- if (id == null) {
- alert("請選擇行!");
- return;
- }
- if (id == "newId") return;
- $("#table1").editRow(id);
- $("#table1").find("#" + id + "_UserId").attr("readonly","readOnly");
- $("#table1").setCell(id, "Edit", "<input id='Button1' type='button' value='提交' onclick='Update(\"" + id + "\")' /><input id='Button2' type='button' value='取消' onclick='Cancel(\"" + id + "\")' />");
- }
- }).navButtonAdd('#div1', {
- caption: "刪除",
- buttonicon: "ui-icon-del",
- onClickButton: function () {
- var id = $("#table1").getGridParam("selrow");
- if (id == null) {
- alert("請選擇行!");
- return;
- }
- Delete(id);
- }
- }).navButtonAdd('#div1', {
- caption: "新增",
- buttonicon: "ui-icon-add",
- onClickButton: function () {
- $("#table1").addRowData("newId", -1);
- $("#table1").editRow("newId");
- $("#table1").setCell("newId", "Edit", "<input id='Button1' type='button' value='提交' onclick='Add()' /><input id='Button2' type='button' value='取消' onclick='Cancel(\"newId\")' />");
- }
- });
- });
- //取消編輯狀態(tài)
- function Cancel(id) {
- if (id == "newId") $("#table1").delRowData("newId");
- else $("#table1").restoreRow(id);
- }
- //向后臺ajax請求新增數(shù)據(jù)
- function Add() {
- var UserId = $("#table1").find("#newId" + "_UserId").val();
- var UserName = $("#table1").find("#newId" + "_UserName").val();
- var Age = $("#table1").find("#newId" + "_Age").val();
- var Tel = $("#table1").find("#newId" + "_Tel").val();
- var Email = $("#table1").find("#newId" + "_Email").val();
- $.ajax({
- type: "POST",
- url: "/Home/Add",
- data: "UserId=" + UserId + "&UserName=" + UserName + "&Age=" + Age + "&Tel=" + Tel + "&Email=" + Email,
- success: function (msg) {
- alert("新增數(shù)據(jù): " + msg);
- $("#table1").trigger("reloadGrid");
- }
- });
- }
- //向后臺ajax請求更新數(shù)據(jù)
- function Update(id) {
- var UserId = $("#table1").find("#" + id + "_UserId").val();
- var UserName = $("#table1").find("#" + id + "_UserName").val();
- var Age = $("#table1").find("#" + id + "_Age").val();
- var Tel = $("#table1").find("#" + id + "_Tel").val();
- var Email = $("#table1").find("#" + id + "_Email").val();
- $.ajax({
- type: "POST",
- url: "/Home/Update",
- data: "UserId=" + UserId + "&UserName=" + UserName + "&Age=" + Age + "&Tel=" + Tel + "&Email=" + Email,
- success: function (msg) {
- alert("修改數(shù)據(jù): " + msg);
- $("#table1").trigger("reloadGrid");
- }
- });
- }
- //向后臺ajax請求刪除數(shù)據(jù)
- function Delete(id) {
- var UserId = $("#table1").getCell(id, "UserId");
- $.ajax({
- type: "POST",
- url: "/Home/Delete",
- data: "UserId=" + UserId,
- success: function (msg) {
- alert("刪除數(shù)據(jù): " + msg);
- $("#table1").trigger("reloadGrid");
- }
- });
- }
二、實(shí)現(xiàn)控制層業(yè)務(wù)
在Controllers目錄下新建控制器“HomeController.cs”,Index.js中產(chǎn)生了四個(gè)ajax請求,對應(yīng)控制層也有四個(gè)業(yè)務(wù)方法。HomeController代碼如下:
- public class HomeController : Controller
- {
- UserModel userModel = new UserModel();
- public ActionResult Index()
- {
- return View();
- }
- /// <summary>
- /// 獲取全部用戶列表,通過json將數(shù)據(jù)提供給jqGrid
- /// </summary>
- public JsonResult UserList(string sord, string sidx, string rows, string page)
- {
- var list = userModel.FindAll();
- int i = 0;
- var query = from u in list
- select new
- {
- id = i++,
- cell = new string[]{
- u["UserId"].ToString(),
- u["UserName"].ToString(),
- u["Age"].ToString(),
- u["Tel"].ToString(),
- u["Email"].ToString(),
- "-"
- }
- };
- var data = new
- {
- total = query.Count() / Convert.ToInt32(rows) + 1,
- page = Convert.ToInt32(page),
- records = query.Count(),
- rows = query.Skip(Convert.ToInt32(rows) * (Convert.ToInt32(page) - 1)).Take(Convert.ToInt32(rows))
- };
- return Json(data, JsonRequestBehavior.AllowGet);
- }
- /// <summary>
- /// 響應(yīng)Js的“Add”ajax請求,執(zhí)行添加用戶操作
- /// </summary>
- public ContentResult Add(string UserId, string UserName, int Age, string Tel, string Email)
- {
- Document doc = new Document();
- doc["UserId"] = UserId;
- doc["UserName"] = UserName;
- doc["Age"] = Age;
- doc["Tel"] = Tel;
- doc["Email"] = Email;
- try
- {
- userModel.Add(doc);
- return Content("添加成功");
- }
- catch
- {
- return Content("添加失敗");
- }
- }
- /// <summary>
- /// 響應(yīng)Js的“Delete”ajax請求,執(zhí)行刪除用戶操作
- /// </summary>
- public ContentResult Delete(string UserId)
- {
- try
- {
- userModel.Delete(UserId);
- return Content("刪除成功");
- }
- catch
- {
- return Content("刪除失敗");
- }
- }
- /// <summary>
- /// 響應(yīng)Js的“Update”ajax請求,執(zhí)行更新用戶操作
- /// </summary>
- public ContentResult Update(string UserId, string UserName, int Age, string Tel, string Email)
- {
- Document doc = new Document();
- doc["UserId"] = UserId;
- doc["UserName"] = UserName;
- doc["Age"] = Age;
- doc["Tel"] = Tel;
- doc["Email"] = Email;
- try
- {
- userModel.Update(doc);
- return Content("修改成功");
- }
- catch
- {
- return Content("修改失敗");
- }
- }
- }
三、實(shí)現(xiàn)模型層數(shù)據(jù)訪問
***,我們在Models新建一個(gè)Home文件夾,添加模型“UserModel.cs”,實(shí)現(xiàn)MongoDB數(shù)據(jù)庫訪問代碼如下:
- public class UserModel
- {
- //鏈接字符串(此處三個(gè)字段值根據(jù)需要可為讀配置文件)
- public string connectionString = "mongodb://localhost";
- //數(shù)據(jù)庫名
- public string databaseName = "myDatabase";
- //集合名
- public string collectionName = "userCollection";
- private Mongo mongo;
- private MongoDatabase mongoDatabase;
- private MongoCollection<Document> mongoCollection;
- public UserModel()
- {
- mongo = new Mongo(connectionString);
- mongoDatabase = mongo.GetDatabase(databaseName) as MongoDatabase;
- mongoCollection = mongoDatabase.GetCollection<Document>(collectionName) as MongoCollection<Document>;
- mongo.Connect();
- }
- ~UserModel()
- {
- mongo.Disconnect();
- }
- /// <summary>
- /// 增加一條用戶記錄
- /// </summary>
- /// <param name="doc"></param>
- public void Add(Document doc)
- {
- mongoCollection.Insert(doc);
- }
- /// <summary>
- /// 刪除一條用戶記錄
- /// </summary>
- public void Delete(string UserId)
- {
- mongoCollection.Remove(new Document { { "UserId", UserId } });
- }
- /// <summary>
- /// 更新一條用戶記錄
- /// </summary>
- /// <param name="doc"></param>
- public void Update(Document doc)
- {
- mongoCollection.FindAndModify(doc, new Document { { "UserId", doc["UserId"].ToString() } });
- }
- /// <summary>
- /// 查找所有用戶記錄
- /// </summary>
- /// <returns></returns>
- public IEnumerable<Document> FindAll()
- {
- return mongoCollection.FindAll().Documents;
- }
- }
四、小結(jié)
代碼下載:http://files.cnblogs.com/lipan/MongoDB_003.rar
自此為止一個(gè)簡單MongoDB表格數(shù)據(jù)操作的功能就實(shí)現(xiàn)完畢了,相信讀者在看完這篇文章后,差不多都可以輕松實(shí)現(xiàn)MongoDB項(xiàng)目的開發(fā)應(yīng)用了。聰明的你一定會(huì)比本文做的功能更完善,更好。下篇計(jì)劃講解linq的方式訪問數(shù)據(jù)集合。
原文出處:http://www.cnblogs.com/lipan/archive/2011/03/11/1980227.html
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