We need to do this to protect the OData service points. Only setting this on the client side code (shown later) is not enough. A user could access the OData service point directly and alter the value. Using the code above prevents this.
We add a page to the Server project using the following code:
using System;using System.Collections.Generic;using System.Linq;using System.Web;namespace LightSwitchApplication.Web{public class GetUserName : IHttpHandler{public void ProcessRequest(HttpContext context){using (var serverContext = ServerApplicationContext.CreateContext()){context.Response.ContentType = "text/plain";context.Response.Write(serverContext.Application.User.Name);}}public bool IsReusable{get{return false;}}}}
We switch back to Logical View, select the Entity, Client (tab), Write Code, and then the created method.
We add the following code:
myapp.PromiseOrders.created = function (entity) {// Set the default date for the Orderentity.OrderDate = new Date();// Using a Promise object we can call the CallGetUserName functionmsls.promiseOperation(CallGetUserName).then(function PromiseSuccess(PromiseResult) {// Set the result of the CallGetUserName function to the// UserName of the entityentity.UserName = PromiseResult;});};// This function will be wrapped in a Promise objectfunction CallGetUserName(operation) {$.ajax({type: 'post',data: {},url: '../web/GetUserName.ashx',success: operation.code(function AjaxSuccess(AjaxResult) {operation.complete(AjaxResult);}) }); }The UserName is now retrieved.Now how to select current user in Lightswitch HTMLClient dropdown?change the following code with the above code
msls.promiseOperation(CallGetUserName).then(function
PromiseSuccess(PromiseResult) {
myapp.activeDataWorkspace.ApplicationData.SalePersonMasters_SingleOrDefault(PromiseResult).execute().then(function (result) {
entity.SalePersonMaster =
result.results[0];
});
});
};
function CallGetUserName(operation) {
$.ajax({
type: 'post',
date: {},
url: '../web/GetUserName.ashx',
success: operation.code(function
AjaxSuccess(AjaxResult) {
operation.complete(AjaxResult);
})
});
}
Current Sales Person is selected in the sales person drop down.
Thanks to http://LightSwitchHelpWebsite.com
Whats new in Visual Studio 2013 for lightswitch Applications?
