Schema

Json Function
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Json Function
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Functions
Schema
The "Schema" function is a great way to reconfigure your json data and make it your own.
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Usage
Install
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$ npm install json-function
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Import
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import { schema } from 'json-function';
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Usage
Example Data
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const data = [
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  {
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    id: 0,
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    user: {
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      firstname: "John",
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      lastname: "Doe"
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    },
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    title: "Book Name"
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  },
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  {
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    id: 1,
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    user: {
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      firstname: "Johnny",
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      lastname: "Doe"
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    },
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    title: "Book Name 2"
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  }
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];
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Syntax
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schema(data, {
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  book: {
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    id: "id",
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    title: "title"
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  },
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  firstname: "user.firstname",
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  lastname: "user.lastname"
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});
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Output
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[
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  {
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    firstname: "John",
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    lastname: "Doe",
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    book: {
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      id: 0,
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      title: "Book Name"
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    }
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  },
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  {
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    firstname: "Johnny",
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    lastname: "Doe",
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    book: {
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      id: 1,
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      title: "Book Name 2"
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    }
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  }
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];
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Apart from this wonderful method, there are also some advanced uses.
Schema has a calback that hosts useful tools.
Example Data
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const data = [
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  {
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    id: 0,
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    user: {
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      firstname: "John",
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      lastname: "Doe"
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    },
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    title: "Book Name"
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  },
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  {
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    id: 1,
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    user: {
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      firstname: "Johnny",
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      lastname: "Doe"
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    },
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    title: "Book Name 2"
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  }
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];
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Syntax
join()
 The default separator is a space.
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schema(data, (sc) => ({
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  id: 'id',
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  fullName: sc.join('user.firstname', 'user.lastname')
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}));
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Output
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[
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  {
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    id: 0,
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    fullName: "John Doe"
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  },
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  {
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    id: 1,
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    fullName: "Johnny Doe"
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  }
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];
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To use a custom separator.
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schema(data, (sc) => ({
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  id: 'id',
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  fullName: sc.join('user.firstname', 'user.lastname', { separator: '_' })
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}));
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Output
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[
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  {
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    id: 0,
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    fullName: "John_Doe"
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  },
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  {
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    id: 1,
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    fullName: "Johnny_Doe"
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  }
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];
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custom()
Example Data
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const data = [
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  {
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    id: 0,
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    createdAt: "2019-03-07T19:22:36+00:00",
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    user: {
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      firstname: "Aykut",
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      lastname: "Kardaş"
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    }
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  },
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  {
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    id: 1,
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    createdAt: "2019-03-02T19:22:36+00:00",
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    user: {
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      firstname: "John",
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      lastname: "Doe"
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    }
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  }
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];
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Usage
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schema(data, sc => ({
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  id: "id",
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  fullName: sc.custom(
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    (firstname, lastname) => `${firstname.toUpperCase()} ${lastname.toUpperCase()}`,
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    "user.firstname",
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    "user.lastname"
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  ),
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  createdAt: sc.custom(
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    createdAt => moment(createdAt).format("MM/DD/YYYY"),
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    "createdAt"
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  ),
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  idIncrement: sc.custom(id => id + 1, "id")
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}));
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Output
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[
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  {
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    id: 0,
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    fullName: "AYKUT KARDAŞ",
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    createdAt: "03/07/2019",
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    idIncrement: 1
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  },
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  {
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    id: 1,
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    fullName: "JOHN DOE",
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    createdAt: "03/02/2019",
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    idIncrement: 2
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  }
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]
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Changelog
Next - Functions
InnerJoin
Last modified 2yr ago
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