Pass in object property as variable in TypeScript function

[lxia]

I’m working on a TypeScript function and I want to be able to pass in an object property as an input.

 @OntologyEditFunction()
    public testPropertyThing(property: keyof ExampleDataAircraft, aircraft: ExampleDataAircraft): void {
        aircraft[property] = "test";
    }

I’m getting this error and can’t quite figure out how to add a check for read-only properties:

(I could also use case/switch but would like to know if this approach can work too)

[sboari]

Hi there!

If this is for a function that’s going to be called from a workshop, you can create a variable using the workshop-native way to select properties from objects and then pass that as input.

If not, then I would suggest you either pass an object/object set as input and then select relevant properties within the function.

What’s your intended use for this function?

[lxia]

Hey! It’s less the passing of the var and more how to add a check to a function to make sure the property the user wants to edit is in fact an editable property.

The idea is that from a workshop, a user can select a property from a string dropdown to edit and then edit a value for it. I’d like to be able to use a single function to set any of the editable properties on the object to the user input.

[OntologyOncologist]

Hi all,

Here are some code snippets that should let you dynamically get & set an object’s property type:

// Getter
 public getMyObjPropertyValue(
        obj: MyObject,
        propertyName: keyof MyObject
): any {
        return (obj as any)[propertyName];
}


// Setter
@OntologyEditFunction()
public setMyObjPropertyValue(
    obj: MyObject,
    propertyName: keyof MyObject,
    newPropertyValueInteger: Integer // Will need to define types as needed
): void {
    // Function to get property name
    (obj as any)[propertyName] = newPropertyValueInteger;
}

// Get Property
let accessedProperty = this.getMyObjPropertyValue(objInstance, (propertyName as keyof MyObject));

// Set property
this.setMyObjPropertyValue(objInstance, (propertyName as keyof RandomSyncWeeklyPairing), valueToSet);