Dalue Mapper Class Usage

The Mapper class under the Dalue namespace offers a powerful and flexible method for data transformation and restructuring. This class allows you to create a new structure from a given data set, optionally performing transformations on the data in the process.

Getting Started

Before you begin using the Mapper class, ensure that the library containing the StrObj\StringObjects class is installed. The Mapper class utilizes the functionalities provided by this class for data access and manipulation.

Installation

First, install the required packages via Composer:

composer require uuur86/dalue:0.1.1-beta

Example Usage

Below is an example of how to use the Mapper class:

use Dalue\Mapper;
use StrObj\StringObjects;

// Sample data set
$data = new StringObjects([
    'user' => [
        'id' => 1,
        'name' => 'John Doe',
        'email' => '[email protected]',
        'details' => [
            'age' => 30,
            'city' => 'New York'
        ]
    ]
]);

// Defining the data structure we want to transform into.
$paths = [
    'userID' => '@data/user/id',
    'userName' => '@data/user/name',
    'userDetails' => [
        'userAge' => '@data/user/details/age',
        'userCity' => '@data/user/details/city'
    ]
];

// Using the Mapper::map function to perform the transformation.
$mappedData = Mapper::map($data, $paths);

print_r($mappedData);

Explanation

1. Data Initialization:
   • A sample data set is created using the StringObjects class.
2. Path Definition:
   • The structure we want to transform into is defined in the $paths array.
3. Data Transformation:
   • The Mapper::map function is used to transform the data according to the defined paths.

Output

The above example will produce the following output:

Array
(
    [userID] => 1
    [userName] => John Doe
    [userDetails] => Array
        (
            [userAge] => 30
            [userCity] => New York
        )
)

Advanced Usage

You can also perform more complex transformations by incorporating custom functions in the mapping paths. Here is an example:

use Dalue\Mapper;
use StrObj\StringObjects;

$data = new StringObjects([
    'user' => [
        'id' => 1,
        'name' => 'John Doe',
        'email' => '[email protected]',
        'details' => [
            'age' => 30,
            'city' => 'New York'
        ]
    ]
]);

$paths = [
    'userID' => '@data/user/id',
    'userName' => '@data/user/name',
    'userEmail' => function($data) {
        return strtoupper($data->get('user.email'));
    },
    'userDetails' => [
        'userAge' => '@data/user/details/age',
        'userCity' => '@data/user/details/city',
        'description' => function($data) {
            return $data->get('user.details.age') . ' years old, lives in ' . $data->get('user.details.city');
        }
    ]
];

$mappedData = Mapper::map($data, $paths);

print_r($mappedData);

Output

The advanced example will produce the following output:

Array
(
    [userID] => 1
    [userName] => John Doe
    [userEmail] => JOHN.DOE@EXAMPLE.COM
    [userDetails] => Array
        (
            [userAge] => 30
            [userCity] => New York
            [description] => 30 years old, lives in New York
        )
)

LICENSE

This project is licensed under the GPL-3.0-or-later License. See the LICENSE file for more details.

AUTHOR

Uğur Biçer - @uuur86

CONTRIBUTING

If you want to contribute to this project, you can send pull requests. We expect all contributors to follow our Code of Conduct.

CONTACT

You can contact me via email: [email protected]

BUGS

You can report bugs via GitHub issues.

SECURITY

If you find a security issue, please report it via email: [email protected]

DONATE

If you want to support me, you can donate via GitHub sponsors: https://github.com/sponsors/uuur86

SEE ALSO

• uuur86/strobj - PHP String Objects
• uuur86/wpoauth - WordPress OAuth2 Client
• @codeplusdev - Codeplus Development