M
M
Modélico
Search…
Nested types example
The introductory example features a standalone class. Let's look at a more involved example that builds on top of that:
{
"givenName": "Javier",
"familyName": "Cejudo",
"pets": [
{
"name": "Robbie"
}
]
}
Notice that the data contains a list of pets (Animal).
Again, our goal is to parse JSON into JavaScript classes to be able to do things like
const person1 = M.fromJSON(Person, personJson)
person1.fullName() // => 'Javier Cejudo'
person1.pets().get(0).speak() // => 'my name is Robbie!'
Note: pets() returns a Modelico.List, which has a get method, but little more. To map, filter or perform other operations, you will need to grab the underlying array with .inner(). See the proxies docs for a way to use methods and properties of the inner structure directly.
To achieve our goal, we need a Person that references Animal within its inner types using the M.metadata()._ function.
import M from 'modelico'
const {_, string, list} = M.metadata()
class Person extends M.Base {
fullName () {
return `${this.givenName()} ${this.familyName()}`.trim()
}
static innerTypes () {
return Object.freeze({
givenName: string(),
familyName: string(),
pets: list(_(Animal))
})
}
}
Copy link