PropertyAccessDisplay::createPropertyAccessor() - Code Metrics - Inspection of "Utilize php 7.1 features wherever possible" - fsi-open/admin-bundle - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#311)

by Łukasz

created 2017-09-14 08:23 UTC

PropertyAccessDisplay::createPropertyAccessor() A

↳ Parent: PropertyAccessDisplay

Complexity

Conditions	1
Paths	1

Size

Total Lines	7
Code Lines	4

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	7
c	0
b	0
f	0
rs	9.4285
cc	1
eloc	4
nc	1
nop	0

<?php

declare(strict_types=1);

/**
 * (c) FSi sp. z o.o. <[email protected]>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace FSi\Bundle\AdminBundle\Display;

use InvalidArgumentException;
use Symfony\Component\PropertyAccess\PropertyAccess;
use Symfony\Component\PropertyAccess\PropertyAccessorInterface;

class PropertyAccessDisplay implements Display
{
    /**
     * @var Property[]
     */
    private $data = [];

    /**
     * @var object|array
     */
    private $object;

    /**
     * @var PropertyAccessorInterface
     */
    private $accessor;

    /**
     * @param object|array $object
     */
    public function __construct($object)
    {
        $this->validateObject($object);

        $this->object = $object;
        $this->accessor = $this->createPropertyAccessor();
    }

    public function add($path, ?string $label = null, array $valueFormatters = []): Display
    {
        $this->data[] = new Property(
            $this->accessor->getValue($this->object, $path),
            $label,
            $valueFormatters
        );

        return $this;
class Author {
    private $name;

    public function __construct($name) {
        $this->name = $name;
    }

    public function getName() {
        return $this->name;
    }
}

abstract class Post {
    public function getAuthor() {
        return 'Johannes';
    }
}

class BlogPost extends Post {
    public function getAuthor() {
        return new Author('Johannes');
    }
}

class ForumPost extends Post { /* ... */ }

function my_function(Post $post) {
    echo strtoupper($post->getAuthor());
}
    }

    public function getData(): array
    {
        return $this->data;
    }

    private function validateObject($object): void
    {
        if (!is_object($object) && !is_array($object)) {
            throw new InvalidArgumentException(sprintf(
                'Argument used to create "%s" must be an object or an array, got "%s" instead.',
                get_class($this),
                gettype($object)
            ));
        }
    }

    private function createPropertyAccessor(): PropertyAccessorInterface
    {
        $accessorBuilder = PropertyAccess::createPropertyAccessorBuilder();
        $accessorBuilder->enableMagicCall();

        return $accessorBuilder->getPropertyAccessor();
    }
}


1			<?php
2
3			declare(strict_types=1);
4
5			/**
6			* (c) FSi sp. z o.o. <[email protected]>
7			*
8			* For the full copyright and license information, please view the LICENSE
9			* file that was distributed with this source code.
10			*/
11
12			namespace FSi\Bundle\AdminBundle\Display;
13
14			use InvalidArgumentException;
15			use Symfony\Component\PropertyAccess\PropertyAccess;
16			use Symfony\Component\PropertyAccess\PropertyAccessorInterface;
17
18			class PropertyAccessDisplay implements Display
19			{
20			/**
21			* @var Property[]
22			*/
23			private $data = [];
24
25			/**
26			* @var object\|array
27			*/
28			private $object;
29
30			/**
31			* @var PropertyAccessorInterface
32			*/
33			private $accessor;
34
35			/**
36			* @param object\|array $object
37			*/
38			public function __construct($object)
39			{
40			$this->validateObject($object);
41
42			$this->object = $object;
43			$this->accessor = $this->createPropertyAccessor();
44			}
45
46			public function add($path, ?string $label = null, array $valueFormatters = []): Display
47			{
48			$this->data[] = new Property(
49			$this->accessor->getValue($this->object, $path),
50			$label,
51			$valueFormatters
52			);
53
54			return $this;
			0 ignored issues – show Bug Best Practice introduced 2017-09-13 18:57 UTC by Report Bug Copy Issue Report The return type of `return $this;` (`FSi\Bundle\AdminBundle\D...y\PropertyAccessDisplay`) is incompatible with the return type declared by the interface `FSi\Bundle\AdminBundle\Display\Display::add` of type `self`. If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design. Let’s take a look at an example: class Author { private $name; public function __construct($name) { $this->name = $name; } public function getName() { return $this->name; } } abstract class Post { public function getAuthor() { return 'Johannes'; } } class BlogPost extends Post { public function getAuthor() { return new Author('Johannes'); } } class ForumPost extends Post { /* ... */ } function my_function(Post $post) { echo strtoupper($post->getAuthor()); } Our function `my_function` expects a `Post` object, and outputs the author of the post. The base class `Post` returns a simple string and outputting a simple string will work just fine. However, the child class `BlogPost` which is a sub-type of `Post` instead decided to return an `object`, and is therefore violating the SOLID principles. If a `BlogPost` were passed to `my_function`, PHP would not complain, but ultimately fail when executing the `strtoupper` call in its body. Loading history...
55			}
56
57			public function getData(): array
58			{
59			return $this->data;
60			}
61
62			private function validateObject($object): void
63			{
64			if (!is_object($object) && !is_array($object)) {
65			throw new InvalidArgumentException(sprintf(
66			'Argument used to create "%s" must be an object or an array, got "%s" instead.',
67			get_class($this),
68			gettype($object)
69			));
70			}
71			}
72
73			private function createPropertyAccessor(): PropertyAccessorInterface
74			{
75			$accessorBuilder = PropertyAccess::createPropertyAccessorBuilder();
76			$accessorBuilder->enableMagicCall();
77
78			return $accessorBuilder->getPropertyAccessor();
79			}
80			}
81

fsi-open / admin-bundle

Pull Request — master (#311)

PropertyAccessDisplay::createPropertyAccessor() A

Complexity

Size

Duplication

Importance

Duplication Side-by-Side

Filter issues like