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Answered

REST api call javascript issue

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Posted on by sdnd2000 2,397

Hi, recently, I met the issue that when I have a REST call, I didn't get the return value(checkApprovedShippingAddress), I assume it is related to async javascript, please advise. 

if(checkApprovedShippingAddress(formContext)){
  alert("1")
}


function checkApprovedShippingAddress(formContext){
debugger;
var currentId = formContext.data.entity.getId();
var query = "ont_shippingaddresses?$select=ont_name,ont_antigenscreeningprogram&$filter=statuscode eq 122290000 and _ont_antigenscreeningprogram_value eq  '" currentId "'"
callAPI(query,function(data){
if(data.value.length > 0){
return true
}
else
{return false}
})
}


function callAPI(query, callback) {
    var globalContext = Xrm.Utility.getGlobalContext();
    var serverUrl = globalContext.getClientUrl();
    //var ODataPath = serverUrl   "/XRMServices/2011/OrganizationData.svc";
    var ODataPath = serverUrl   "/api/data/v9.1/";

    var req = new XMLHttpRequest();
    req.open("GET", ODataPath   query, true);
    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(this.response);
                callback(result);
            } else {
                alert(this.statusText);
            }
        }
    };
    req.send();
}

Categories:
Customization / Solutions / SDK and API
  • Verified answer
    vishal bagadia_crm Profile Picture
    vishal bagadia_crm 490 on at
    RE: REST api call javascript issue

    Hello,

    Its a nature of async process. 

    Please refer the below code to use the proper async logic without any issue. Under async process, if you need to perform some action that is dependent on the result, then always include the actions under response loop.

    Call Method- checkApprovedShippingAddress(formContext)


function checkApprovedShippingAddress(formContext){
debugger;
var currentId = formContext.data.entity.getId();
var query = "ont_shippingaddresses?$select=ont_name,ont_antigenscreeningprogram&$filter=statuscode eq 122290000 and _ont_antigenscreeningprogram_value eq  '" currentId "'"
callAPI(query);
}


function callAPI(query) {
    var globalContext = Xrm.Utility.getGlobalContext();
    var serverUrl = globalContext.getClientUrl();
    //var ODataPath = serverUrl   "/XRMServices/2011/OrganizationData.svc";
    var ODataPath = serverUrl   "/api/data/v9.1/";

    var req = new XMLHttpRequest();
    req.open("GET", ODataPath   query, true);
    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(this.response);
                if(data.value.length > 0){
                alert("1");
                }
                else
                {
                alert("2");
                }
            } else {
                alert(this.statusText);
            }
        }
    };
    req.send();
}


    Please mark the answer as verified, if it works for you.

    Regards,
    CRM Developer

  • Suggested answer
    a33ik Profile Picture
    a33ik 84,321 Most Valuable Professional on at
    RE: REST api call javascript issue

    Sure - developer.mozilla.org/.../Using_promises

  • sdnd2000 Profile Picture
    sdnd2000 2,397 on at
    RE: REST api call javascript issue

    Thanks, Andrew, do you have a sample about promise async scenarios

  • Suggested answer
    a33ik Profile Picture
    a33ik 84,321 Most Valuable Professional on at
    RE: REST api call javascript issue

    Hello,

    Yes, it is related to async nature of the call. You should start using promice for async scenarios.

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