How to set a lookup value in Dynamics 365/ Model Driven apps using javascript

Hello everyone and welcome to my blog. In today’s blog I will show on how to set a lookup field value in Dynamics 365/ Model Driven apps using javascript.

Lookups in Dynamics 365 model driven apps are essentially arrays. Each array object should have the following three properties.

• entityType : Logical name of the lookup record table
• id: the guid of the lookup record
• name: text representing the name of the record to be displayed in the lookup

In my example I want to set the Primary Contact field of account dynamically using script.

And below is the code to do that.

function setLookupValue(e) {
   var formContext = e.getFormContext();

   // create the object
   var primaryContact = {
      "entityType": "contact", // change this to the logical name of parent table.
      "id": "f9aca81b-bc5e-ed11-9562-6045bdad1b49", // guid of the parent record
      "name": "sample contact" // text representing the name of the record to be displayed in the lookup.
   };

   // replace primarycontactid with the lookup field name in your case.
   formContext.getAttribute("primarycontactid").setValue([primaryContact]);
}

As you can see in the above code, I have created an object primaryContact with the three required properties entityType, id and name.

And then set the value of the lookup to an array object. Observe the square brackets I am using while setting the primarycontactid lookup field – [primaryContact]

Please note that you need to change the field names accordingly as per your requirement. Check for the comments in each line of code.

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Debajit Dutta
Business Solutions MVP