What are model .props() and how to use them?

[OnkelTem]

What are model .props() and how to use them?

Can I give labels to fields using them?

[coolsoftwaretyler]

.props() is just another builder method on model types that allows you to add or override props given to a model. See docs.

const SomeModel = types.model({ firstName: "Tyler"}).props({ lastName: "Williams" })
const modelInstance = SomeModel.create()
console.log(modelInstance.firstName) // Tyler
console.log(modelInstance.lastName) // Williams

More useful if you're extending an existing model, in my opinion. But some people use props instead of the initial properties argument to the types.model function.

[OnkelTem]

That makes much sense, thank you!

Currently I use types.compose() to add props.
But seems like with .props() I can not only &-new props, but override existing ones, like totally replacing the original prop type. Is that so?

[coolsoftwaretyler]

Correct