javascript - 使用功能区工作台不工作的 CRM 2015 中动态隐藏主页按钮

Question

我正在创建一个自定义启用规则以在功能区工作台的自定义实体中隐藏“导入”按钮。这是我的 JS 代码：

function ShowHideButton() {
var context;
var serverUrl;
var UserID;
var ODataPath;
var toReturn;
context = Xrm.Page.context;
serverUrl = context.getClientUrl();
UserID = context.getUserId();
ODataPath = serverUrl + "/XRMServices/2011/OrganizationData.svc";
var retrieveUserReq = new XMLHttpRequest();
retrieveUserReq.open("GET", ODataPath + "/SystemUserSet(guid'" + UserID + "')", true);
retrieveUserReq.setRequestHeader("Accept", "application/json");
retrieveUserReq.setRequestHeader("Content-Type", "application/json; charset=utf-8");
retrieveUserReq.onreadystatechange = function () {
    toReturn = retrieveUserReqCallBack(this);      
};
retrieveUserReq.send();

return toReturn;
}

function retrieveUserReqCallBack(retrieveUserReq) {

var retrievedUser = this.parent.JSON.parse(retrieveUserReq.responseText).d;
var retrievedValue = retrievedUser.BusinessUnitId;
var id = retrievedValue.Id;
var refIdAdmin;
var refIdTL;
var refMember;

refIdAdmin = "6EF4BCC3-5608-E511-9415-22000A93809E";
refIdTL = "CCFE0C41-D208-E511-9416-22000A93809E";
refMember = "1010FC5F-2D2C-E511-941A-22000AA400C9";   

if (id.toUpperCase() == refIdAdmin) {

    return true;
}
else if (id.toUpperCase() == refIdTL) {

    return true;
}
else if (id.toUpperCase() == refMember) {
    return true;
}
else {

    return false;
}

}

你能帮我修复代码，以便 Ribbon Workbench 能够读取我想要返回的内容吗？

Answer 1

您正在发出异步请求，这就是验证规则时 toReturn 为空的问题

var request = new XMLHttpRequest();

request.open('GET', '/bar/foo.txt', false);  // false makes the request synchronous

request.send(null);

if (request.status === 200) {

console.log(request.responseText);

}