一个 Javascript 中的 2 个 XMLHTTPRequests (Dynamics CRM)

问题描述

我目前正在尝试在动态 CRM Javascript 中运行 2 个单独的 XMLHTTPRequest，以从 2 个不同的实体检索数据并根据检索的内容运行代码..

出于安全原因，我已尽力尝试编辑一些名称，但前提是相同的。 我的主要问题是第一次运行 XMLHTTPRequest（RA 横幅）工作正常，但是第二次运行（状态横幅）返回的 Readystate 是 2 并且正在停止。

function FormBanners(formContext) {
    //Clear the existing banners
    formContext.ui.clearFormNotification("Notif1");
    formContext.ui.clearFormNotification("Notif2");

    //Get the customer/rep
    var customer = formContext.getAttribute("customerid").getValue();
    var rep = formContext.getAttribute("representative").getValue();
    var contact;

    //use the rep if there is one else use the customer
    if (rep != null) {
        contact = rep;
    }
    else if (customer!= null) {
        contact = customer;
    }

    //Get the account
    var account = formContext.getAttribute("accountfield").getValue();

    //As there is a requirement for 2 XMLHTTPRequests we have to queue them
    var requestURLs = new Array();

    //There will always be a customers or rep on the form
    requestURLs.push(Xrm.Page.context.getClientUrl() + "/api/data/v9.1/contacts?$select=new_RA,new_SC,new_VC,new_PR&$filter=contactid eq " + contact[0].id + "",true);

    //there may not be an account
    if (account) {
        requestURLs.push(Xrm.Page.context.getClientUrl() + "/api/data/v9.1/accounts?$select=_new_statusLookup_value&$filter=accountid eq " + account[0].id + "",true);
    }

    var current = 0;

    function getURL(url) {
        var req = new XMLHttpRequest();
        req.open("GET",requestURLs[current]);
        req.setRequestHeader("OData-MaxVersion","4.0");
        req.setRequestHeader("OData-Version","4.0");
        req.setRequestHeader("Accept","application/json");
        req.setRequestHeader("Content-Type","application/json; charset=utf-8");
        req.setRequestHeader("Prefer","odata.include-annotations=\"*\"");
        req.onreadystatechange = function () {
            if (this.readyState === 4) {
                req.onreadystatechange = null;
                if (this.status === 200) {
                    var result = JSON.parse(req.response);
                    // Creation of the RA Banner
                    if (current == 0) {
                        var RA = result.value[0]["[email protected]munity.display.V1.FormattedValue"];
                        var SC = result.value[0]["[email protected]munity.display.V1.FormattedValue"];
                        var VC = result.value[0]["[email protected]munity.display.V1.FormattedValue"];
                        var PR = result.value[0]["[email protected]munity.display.V1.FormattedValue"];
                        var Notif = "";

                        //Only create a notification if any of the above contain "Yes"
                        if (RA == "Yes" || SC == "Yes" || VC == "Yes" || PR == "Yes") { Notif = "The Customer/Rep has:" }
                        if (RA == "Yes") { Notif = Notif + " RA,"; }
                        if (SC == "Yes") { Notif = Notif + " SC,"}
                        if (VC == "Yes") { Notif = Notif + " VC,"}
                        if (PR == "Yes") { Notif = Notif + " PR."}

                        if (Notif != "") {
                            formContext.ui.setFormNotification(Notif,"INFO","Notif1");
                        }
                    }
                    //Creation of the Status Banner
                    else if (current == 1) {
                        status = results.value[i]["_new_statusLookup_value"];
                        if (status) {
                            if (status[0].name != "Open")
                                var Notif = "The status for the organisation on this case is " + status[0].name + ".";
                            formContext.ui.setFormNotification(Notif,"Notif2");
                        }
                    }

                    ++current;
                    if (current < requestURLs.length) {
                        getURL(requestURLs[current]);
                    }

                } else {
                    Xrm.Utility.alertDialog(req.statusText);
                }
            }
        }; req.send();
    }

    getURL(requestURLs[current]);
}

有人可以帮我吗？

解决方法

所以在我的例子中我犯了很多错误。根据 Arun 的建议，我将函数分离出来，这使得调试变得容易得多。它并没有在 XMLHTTP 请求上失败，因为它运行良好，但是调试时 firefox 崩溃了。

所以我的问题是我在第二部分：

• 将 i 的值用于结果（不再定义 i）
• 获取“_new_statusLookup_value”只会提供查找的 guid 我想要“[e-mail]”
• 不要忽视这样一个事实，因为我复制并粘贴了此代码的多次迭代，因此我也使用了“results”而不是“result”。

很多小错误......但它发生了！感谢您的帮助，只是为了显示......错别字是我们的垮台！