using REST API with JavaScript

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Posted on by Kalana1985

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I'm new to use REST API with JavaScript for Dynamics CRM, i'm using the CRM Rest Builder to crate the API, would anyone care to share how to use REST API with JavaScript function. any code snippet you use, if i could use as a example, i would greatly appreciate that.

Thanks!

( for example i'm trying to do is get a option-set value from one entity and pass it to different field in another entity )

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a33ik 84,331 Most Valuable Professional on at

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Rest Builder provides you a code snippet. What exactly is not clear for you?

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Community Member on at

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Hola. así se consume un servicio

var serverUrl = Xrm.Page.context.getClientUrl();

// Obtengo el Guid de la entidad
var guidCiudad = Xrm.Page.data.entity.getId();

guidCiudad = guid.replace("{", "");
guidCiudad = guid.replace("}", "");

// Consumo el api rest var oDataSelect = serverUrl + "/api/data/v8.0/territories?$filter=territoryid eq " + guidCiudad; var retrieveReq = new XMLHttpRequest(); retrieveReq.open("GET", oDataSelect, false); retrieveReq.setRequestHeader("Accept", "application/json"); retrieveReq.setRequestHeader("Content-Type", "application/json;charset=utf-8"); retrieveReq.onreadystatechange = function () { if (retrieveReq.readyState == 4 && retrieveReq.status == 200) { var resultado = JSON.parse(retrieveReq.responseText); } }; retrieveReq.send();

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a33ik 84,331 Most Valuable Professional on at

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Your code would not work.

guidCiudad = guid.replace("{", "");

this line will throw an error that guid is not defined.

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Kalana1985 140 on at

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function optionset1() {
var req = new XMLHttpRequest();
req.open("GET", Xrm.Page.context.getClientUrl() + "/api/data/v8.2/new_test1s()?$select=new_option", 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);
var new_option = result["new_option"];
var new_option_formatted = result["new_option@OData.Community.Display.V1.FormattedValue"];
} else {
Xrm.Utility.alertDialog(this.statusText);
}
}
};
req.send();

}
function SetMultiSelValues(executionContext) {
//get value form multyiselect1
var formContext = executionContext.getFormContext();

//Get Array of Selected OptionSet Values
var selectedValues = formContext.getAttribute("optionset1");
// setting value

if (selectedValues != null) {
formContext.getAttribute("new_option2").setValue(selectedValues);

} else {
formContext.getAttribute("new_option2").setValue(" ");
}
};

im just having trouble hoicking API to JS function, any help is greatly appreciated

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hello,

If you are right, it would be like this.

guidCiudad = guidCiudad .replace("{", "");

guidCiudad = guidCiudad .replace("}", "");

I copied the code lightly and did not realize,

regards

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Arun Vinoth 11,615 Moderator on at

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Try to debug the code if you have no clue.

Add debugger; in your JavaScript & publish the webresource. Then open/refresh the browser & reproduce the steps.

Breakpoint will hit in debugger; line in browser console, then you can debug line by line like visual studio.

Errors will be logged in error console as well, also add try catch block as a best practice.

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RaviKashyap 55,410 Moderator on at

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Hi kalana,

Try the be;low code (refactored from your code- basically calling the web pi from the main js method and settign the value after retriing the results- havent tested it but should work)

====================

function SetMultiSelValues(executionContext) {

//get value form multyiselect1

var formContext = executionContext.getFormContext();

var req = new XMLHttpRequest();

req.open("GET", Xrm.Page.context.getClientUrl() + "/api/data/v8.2/new_test1s()?$select=new_option", 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);

var new_option = result["new_option"];

var new_option_formatted = result["new_option@OData.Community.Display.V1.FormattedValue"];

if (new_option != null) {

formContext.getAttribute("new_option2").setValue(new_option);

}

} else {

Xrm.Utility.alertDialog(this.statusText);

}

}

};

req.send();

};

=====================

If you need to know the basics of CRM javascript then you can refer this- neilparkhurst.com/.../javascript-basics

Hope this helps.

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Kalana1985 140 on at

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Hello Ravi, i refracted my code as per yours above, and add it ad onLoad event, but unfortunately its not working as expected, ill attached my code below.

// API retrive for Speialty in credentialing

function setRevSpecialty(executionContext) {

var formContext = executionContext.getFormContext();

var req = new XMLHttpRequest();

req.open("GET", Xrm.Page.context.getClientUrl() + "/api/data/v8.2/hqi_credentialings()?$select=hqi_specialty", 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);

var hqi_specialty = result["hqi_specialty"];

var hqi_specialty_formatted = result["hqi_specialty@OData.Community.Display.V1.FormattedValue"];

//checking credentialing specialty value and passing it to hqi_reviewerspecialty1

if (hqi_specialty != null) {

formContext.getAttribute("hqi_reviewerspecialty1").setValue(hqi_specialty)

}

} else {

Xrm.Utility.alertDialog(this.statusText);

}

}

};

req.send();

};

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RaviKashyap 55,410 Moderator on at

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Hi kalana,

Did you debug if the value is being returned by the web api? Do you see any error in ui or developer tool?

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Kalana1985 140 on at

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Hello Ravi,

do i have to provide JSON reassurances to code when using REST API ? one of the Microsoft tech suggest me that.

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