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Object.assign()
Description
Object.assign() copies properties from a source Object to a destination
Object.
If the source and destination Object have a property with the same key, the value from the source Object is used.
If a property in the source Object doesn’t exist in the destination Object, the property is added to the destination Object.
Object.assign() doesn’t remove null properties.
Convert documents to Objects
You can use Object.assign() to convert a
document into an Object. This can be
useful for transforming results and manipulating document data without
mutating the underlying document.
Examples
Basic example
The following examples copies properties from a source Object to an empty destination Object:
Object.assign({ }, { a: 0, b: 'x' }){
a: 0,
b: "x"
}Merge properties
You can use Object.assign() to merge the properties of
the source and destination Object:
Object.assign({ a: 0 }, { b: 'x' }){
a: 0,
b: "x"
}Convert a document to an Object
You can use Object.assign() to convert a
document type into an
Object:
// Get a Category collection document.
let category: Any = Category.byName("frozen").first()
// Convert the Category document to an Object.
Object.assign({ }, category)The query returns an Object, not a document type:
{
id: "456",
coll: Category,
ts: Time("2099-10-02T22:37:39.583Z"),
products: {
data: [
{
id: "333",
coll: Product,
ts: Time("2099-10-02T22:37:39.583Z"),
name: "pizza",
description: "Frozen Cheese",
price: 499,
stock: 100,
category: Category("456")
}
]
},
name: "frozen",
description: "Frozen Foods"
}Is this article helpful?
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