surecart / app / src / Form / FormValidationService.php

FormValidationService.php in SureCart – Ecommerce Made Easy For Selling Physical Products, Digital Downloads, Subscriptions, Donations, & Payments 4.4.0, at app/src/Form/FormValidationService.php

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1	<?php
2
3	namespace SureCart\Form;
4
5	/**
6	* Handles server-side form validation of gutenberg blocks.
7	*/
8	class FormValidationService {
9	/**
10	* Holds the parsed blocks.
11	*
12	* @var array
13	*/
14	protected $blocks = [];
15
16	/**
17	* The form post content.
18	*
19	* @var string
20	*/
21	protected $content = '';
22
23	/**
24	* Params to validate.
25	*
26	* @var array
27	*/
28	protected $params = [];
29
30	/**
31	* Get things going.
32	*
33	* @param string $content Post content.
34	* @param array $params Params to validate.
35	*/
36	public function __construct( $content, $params = [] ) {
37	$this->content = $content;
38	$this->params = $params;
39	}
40
41	/**
42	* Validate the form submission.
43	*
44	* @return true\|WP_Error
45	*/
46	public function validate() {
47	$this->blocks = parse_blocks( $this->content );
48	return true;
49	}
50
51	/**
52	* Find required blocks recursively.
53	*/
54	public function findRequiredBlocks() {
55	return $this->getNestedBlocksWhere( 'required', true );
56	}
57
58	/**
59	* Get nested block with a specific attribute/value pair.
60	*
61	* @param string $attribute Attribute name.
62	* @param any $value The value.
63	* @return array
64	*/
65	protected function getNestedBlocksWhere( $attribute, $value ) {
66	$blocks_with_requirements = $this->getNestedBlockWithAttribute( $this->blocks, 'required' );
67	return array_filter(
68	$blocks_with_requirements,
69	function( $block ) use ( $attribute, $value ) {
70	return $block['attrs'][ $attribute ] === $value;
71	}
72	);
73	}
74
75	/**
76	* Get nested values from an array
77	*
78	* @param array $array Array to search.
79	* @param string $nested_key Nested key to search for.
80	* @return array
81	*/
82	protected function getNestedBlockWithAttribute( array $array, $nested_key ) {
83	$return = array();
84	array_walk_recursive(
85	$array,
86	function( $a, $key ) use ( &$return, $nested_key ) {
87	if ( $nested_key === $key ) {
88	$return[] = $a;
89	}
90	}
91	);
92	return $return;
93	}
94	}
95