How to create deep insert in CAPM (Node.js).Give a Example using Composition.

[MattBrightman]

Given this schema:

entity Books {
  key ID           : UUID;
      title        : String;
      description  : String;
      stock        : Integer;
      reorderPoint : Integer;
      statusCode   : String;
      price        : Integer;
      to_Chapters  : Composition of many Chapters
                       on to_Chapters.to_Books = $self
}

entity Chapters {
  key ID       : UUID;
      title    : String;
      to_Books : Association to Books
}

Some code like:

const  payload = {
  title: "201",
  stock: 1,
  description: "capval 3",
  price: 3,
  statusCode: "A",
  reorderPoint: 6,
  to_Chapters: [
    {
      title: "Introduction",
    },
  ],
};

await cds.tx(req).run(INSERT.into(Books).entries(payload))