Coolite Cool Study 3 MVC + Coolite 的實現代碼

因為默認的 MVC 的樣式文件裡對於的 table 和 其他相關樣式（h1～h6） 與Coolite有沖突，會導致GridPanel走樣，大家記得先把那個table 和  h1～h6的樣式清除掉才看到GridPanel的帥臉面 …

項目文件分布：

關於Coolite在MVC中的配置文件跟一般webform是一樣的。 但在MVC的Global.asax中，需要在 RegisterRoutes 方法裡加上這一句：

routes.IgnoreRoute("{exclude}/{coolite}/coolite.axd");

另外 ScriptManager 要注明 IDMode="Static“：

<ext:ScriptManager ID="ScriptManager1" runat="server"  IDMode="Static"/>

其中唯一與一般MVC不同的是，我們需要定義自己的ActionResult來返回Json結果給客戶端。因為Coolite 的JsonReader 要求的格式大致都是這樣：{data: [{…}], totalCount: …}

關於JsonReader的一般用法：

<ext:JsonReader ReaderID="CustomerID" Root="data" TotalProperty="totalCount"> 

所以， 要繼承MVC ActionResult 的抽象方法 public override void ExecuteResult(ControllerContext context)  來返回給 JsonReader   合適口味的 JsonResult , 不然它就不認人了。

以下代碼實現了對Json Response & Save Response 的簡單封裝。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using Coolite.Ext.Web;

namespace CooliteMVC.Helper
{ 
  public class AjaxStoreResult : ActionResult
  {
    public AjaxStoreResult() { }

    public AjaxStoreResult(object data)
    {
      this.Data = data;
    }

    public AjaxStoreResult(object data, int totalCount)
      : this(data)
    {
      this.TotalCount = totalCount;
    }

    public AjaxStoreResult(StoreResponseFormat responseFormat)
    {
      this.ResponseFormat = responseFormat;
    }

    private object data;
    public object Data
    {
      get { return this.data; }
      set { this.data = value; }
    }

    private int totalCount;
    public int TotalCount
    {
      get { return this.totalCount; }
      set { this.totalCount = value; }
    }

    private StoreResponseFormat responseFormat = StoreResponseFormat.Load;
    public StoreResponseFormat ResponseFormat
    {
      get { return this.responseFormat; }
      set { this.responseFormat = value; }
    }

    private SaveStoreResponse saveResponse;
    public SaveStoreResponse SaveResponse
    {
      get
      {
        if (this.saveResponse == null)
        {
          this.saveResponse = new SaveStoreResponse();
        }
        return this.saveResponse;
      }
    }

    public override void ExecuteResult(ControllerContext context)
    {
      switch (this.ResponseFormat)
      {
        case StoreResponseFormat.Load:

          string json = Coolite.Ext.Web.JSON.Serialize(Data);
          json = "{data:" + json + ", totalCount:" + 100 + "}";
          context.HttpContext.Response.Write(json);
           
          break;
        case StoreResponseFormat.Save:
          Response response = new Response(true);
          response.Success = this.SaveResponse.Success;
          response.Msg = this.SaveResponse.ErrorMessage;
          StoreResponseData saveResponse = new StoreResponseData();
          saveResponse.Confirmation = this.SaveResponse.ConfirmationList;
          response.Data = saveResponse.ToString();

          response.Write();
          break;
        default:
          throw new ArgumentOutOfRangeException();
      }
    }
 
  }

  public enum StoreResponseFormat
  {
    Load,
    Save
  }

  public class SaveStoreResponse
  {
    private bool success = true;
    private string errorMessage;

    public bool Success
    {
      get { return this.success; }
      set { this.success = value; }
    }

    public string ErrorMessage
    {
      get { return this.errorMessage; }
      set { this.errorMessage = value; }
    }

    public ConfirmationList ConfirmationList { get; set; }
  }
}

AjaxStoreResult 在 CustomerController 中的使用：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Mvc.Ajax;
using CooliteMVC.Models;
using CooliteMVC.Helper;
using Coolite.Ext.Web;

namespace CooliteMVC.Controllers
{
  public class CustomerController : Controller
  {
    //
    // GET: /Customer/

    public ActionResult Index()
    {
      ViewData["Title"] = "Customer List";
      ViewData["Message"] = "Welcome to Coolite MVC! My name is Bruce.";
      return View();
    }

    public ActionResult List(int limit, int start, string dir, string sort)
    {
      Random rand = new Random();
      IList<Customer> list = new List<Customer>();
      for (int i = start; i < start + limit; i++)
        list.Add(new Customer
        {
          CustomerID = "Customer" + i,
          Address = "Address" + i,
          City = "City" + rand.Next(1000),
          CompanyName = "Com" + rand.Next(1000),
          ContactName = "Contract" + rand.Next(1000),
          ContactTitle = "Title" + rand.Next(1000),
          Country = "Country" + rand.Next(1000),
          Email = rand.Next(1000) + "@live.com",
          Fax = rand.Next(1000).ToString() + rand.Next(1000),
          Mobile = rand.Next(1000).ToString() + rand.Next(1000),
          Notes = "Notes" + rand.Next(1000),
          Phone = "Phone" + rand.Next(1000),
          Region = "Region" + rand.Next(1000),
          TranDate = DateTime.Now.AddDays(rand.Next(30))
        });
      return new AjaxStoreResult(list, 100);
    }

    public ActionResult Save()
    {
      AjaxStoreResult ajaxStoreResult = new AjaxStoreResult(StoreResponseFormat.Save);
      try
      {
        StoreDataHandler dataHandler = new StoreDataHandler(Request["data"]);
        ChangeRecords<Customer> data = dataHandler.ObjectData<Customer>();

        foreach (Customer customer in data.Deleted)
        {
          //db.Customers.Attach(customer);
          //db.Customers.DeleteOnSubmit(customer);
        }
        foreach (Customer customer in data.Updated)
        {
          //db.Customers.Attach(customer);
          //db.Refresh(RefreshMode.KeepCurrentValues, customer);
        }
        foreach (Customer customer in data.Created)
        {
          //db.Customers.InsertOnSubmit(customer);
        }
      }
      catch (Exception e)
      {
        ajaxStoreResult.SaveResponse.Success = false;
        ajaxStoreResult.SaveResponse.ErrorMessage = e.Message;
      }
      return ajaxStoreResult;
    }
 
  }
}

頁面的關鍵代碼：

   <ext:Store ID="dsCustomers" runat="server" >
    <Proxy>
      <ext:HttpProxy Url="/Customer/List" Method ="GET" />
    </Proxy>
    <UpdateProxy>
       <ext:HttpWriteProxy Url="/Customer/Save" />
    </UpdateProxy>
    <Reader>
      <ext:JsonReader ReaderID="CustomerID" Root="data" TotalProperty="totalCount">
        <Fields>
          <ext:RecordField Name="CustomerID" SortDir="ASC" />
          <ext:RecordField Name="CompanyName" />
          <ext:RecordField Name="ContactName" />
          <ext:RecordField Name="Email" />
          <ext:RecordField Name="Phone" />
          <ext:RecordField Name="Fax" />
          <ext:RecordField Name="Region" />
          <ext:RecordField Name="TranDate" Type="Date" />
        </Fields>
      </ext:JsonReader>
    </Reader>
    <BaseParams>
      <ext:Parameter Name="limit" Value="15" Mode="Raw" />
      <ext:Parameter Name="start" Value="0" Mode="Raw" />
      <ext:Parameter Name="dir" Value="ASC" />
      <ext:Parameter Name="sort" Value="CustomerID" />
    </BaseParams>
    <SortInfo Field="CustomerID" Direction="ASC" />
  </ext:Store>

我們可以看到其實就是Url的寫法不同而已：

 <ext:HttpProxy Url="/Customer/List" Method ="GET" />

 <ext:HttpWriteProxy Url="/Customer/Save" /> 

詳細頁面代碼跟第一章差不多，這裡不列出來。