REST api call javascript issue

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Posted on by sdnd2000

2,510

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();
}

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Answers (1)

Suggested answer

a33ik 84,331 Most Valuable Professional on at

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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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sdnd2000 2,510 on at

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RE: REST api call javascript issue

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

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Suggested answer

a33ik 84,331 Most Valuable Professional on at

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RE: REST api call javascript issue

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

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Verified answer

vishal bagadia_crm 490 on at

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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

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