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<?php
/**
* Handles all server side logic for the ld-exam Gutenberg Block.
*
* @package LearnDash
* @since 4.0.0
*/
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
if ( ( class_exists( 'LearnDash_Gutenberg_Block' ) ) && ( ! class_exists( 'LearnDash_Gutenberg_Block_Exam' ) ) ) {
/**
* Class for handling LearnDash Exam Block
*/
class LearnDash_Gutenberg_Block_Exam extends LearnDash_Gutenberg_Block {
/**
* Array of sub_blocks used within the Exam Question block.
*
* @var array.
*/
private $sub_blocks = array();
/**
* Object constructor
*/
public function __construct() {
$this->block_slug = 'ld-exam';
$this->self_closing = false;
$this->block_attributes = array(
'ld_version' => array(
'type' => 'string',
),
);
$this->sub_blocks = array(
$this->block_base . '/ld-exam-question',
$this->block_base . '/ld-question-description',
$this->block_base . '/ld-question-answers-block',
$this->block_base . '/ld-correct-answer-message-block',
$this->block_base . '/ld-incorrect-answer-message-block',
);
$this->init();
add_filter( 'pre_render_block', array( $this, 'pre_render_block' ), 30, 3 );
}
/**
* Pre-Render filter for Block.
*
* We hook into the pre_render_block filter to prevent the default exam blocks
* from being rendered by WP.
*
* @since 4.0.0
*
* @param string|null $content The pre-rendered content. Default null.
* @param array $parsed_block The block being rendered.
* @param WP_Block|null $parent_block If this is a nested block, a reference to the parent block.
*/
public function pre_render_block( $content, $parsed_block = array(), $parent_block = null ) {
if ( ( isset( $parsed_block['blockName'] ) ) && ( $this->block_base . '/' . $this->block_slug === $parsed_block['blockName'] ) ) {
$current_post_id = (int) get_the_ID();
$current_post_type = get_post_type( $current_post_id );
if ( learndash_get_post_type_slug( 'exam' ) === $current_post_type ) {
$atts = array(
'exam_id' => $current_post_id,
'course_id' => 0,
'user_id' => get_current_user_id(),
);
$course_id_show = (int) learndash_get_setting( $current_post_id, 'exam_challenge_course_show' );
if ( ! empty( $course_id_show ) ) {
$atts['course_id'] = $course_id_show;
}
$ld_exam_object = LDLMS_Factory_Post::exam( $atts['exam_id'], $atts );
if ( ( $ld_exam_object ) && ( is_a( $ld_exam_object, 'LDLMS_Model_Exam' ) ) ) {
$ld_exam_object->process_exam_submit();
$content = $ld_exam_object->get_front_content();
}
} else {
$content = '';
}
}
return $content;
}
/**
* Register Block for Gutenberg
*
* @since 4.0.0
*/
public function register_blocks() {
// Call our parent to register the block.
parent::register_blocks();
/**
* Register some internal blocks.
*/
register_block_type(
$this->block_base . '/ld-exam-question',
array(
'render_callback' => array( $this, 'render_block_exam_question' ),
'attributes' => $this->block_attributes,
)
);
register_block_type(
$this->block_base . '/ld-question-description',
array(
'render_callback' => array( $this, 'render_block_exam_question_description' ),
'attributes' => $this->block_attributes,
)
);
register_block_type(
$this->block_base . '/ld-question-answers-block',
array(
'render_callback' => array( $this, 'render_block_exam_question_answers' ),
'attributes' => $this->block_attributes,
)
);
register_block_type(
$this->block_base . '/ld-correct-answer-message-block',
array(
'render_callback' => array( $this, 'render_block_exam_question_correct_message' ),
'attributes' => $this->block_attributes,
)
);
register_block_type(
$this->block_base . '/ld-incorrect-answer-message-block',
array(
'render_callback' => array( $this, 'render_block_exam_question_incorrect_message' ),
'attributes' => $this->block_attributes,
)
);
}
/**
* Render Exam Question Block
*
* This function is called per the register_block_type() function above. This function will output
* the block rendered content.
*
* @since 4.0.0
*
* @param array $block_attributes The block attributes.
* @param string $block_content The block content.
* @param WP_block $block The block object.
*
* @return none The output is echoed.
*/
public function render_block( $block_attributes = array(), $block_content = '', WP_block $block = null ) {
return '';
}
/**
* Render Exam Question Block
*
* This function is called per the register_block_type() function above. This function will output
* the block rendered content.
*
* @since 4.0.0
*
* @param array $block_attributes The block attributes.
* @param string $block_content The block content.
* @param WP_block $block The block object.
*
* @return none The output is echoed.
*/
public function render_block_exam_question( $block_attributes = array(), $block_content = '', WP_block $block = null ) {
$block_attributes['learndash_question_content'] = $block_content;
$block_content = SFWD_LMS::get_template(
'exam/partials/exam_question_row.php',
$block_attributes
);
return $block_content;
}
/**
* Render Exam Question Description Block
*
* This function is called per the register_block_type() function above. This function will output
* the block rendered content.
*
* @since 4.0.0
*
* @param array $block_attributes The block attributes.
* @param string $block_content The block content.
* @param WP_block $block The block object.
*
* @return none The output is echoed.
*/
public function render_block_exam_question_description( $block_attributes = array(), $block_content = '', WP_block $block = null ) {
$block_attributes['learndash_question_description'] = $block_content;
$block_content = SFWD_LMS::get_template(
'exam/partials/exam_question_description.php',
$block_attributes
);
return $block_content;
}
/**
* Render Exam Question Answers Block
*
* This function is called per the register_block_type() function above. This function will output
* the block rendered content.
*
* @since 4.0.0
*
* @param array $block_attributes The block attributes.
* @param string $block_content The block content.
* @param WP_block $block The block object.
*
* @return none The output is echoed.
*/
public function render_block_exam_question_answers( $block_attributes = array(), $block_content = '', WP_block $block = null ) {
if ( ! isset( $block_attributes['learndash_question_answers'] ) ) {
if ( isset( $block_attributes['answers'] ) ) {
$block_attributes['learndash_question_answers'] = $block_attributes['answers'];
unset( $block_attributes['answers'] );
}
}
$block_content = SFWD_LMS::get_template(
'exam/partials/exam_question_answers.php',
$block_attributes
);
return $block_content;
}
/**
* Render Exam Question Correct Message Block
*
* This function is called per the register_block_type() function above. This function will output
* the block rendered content.
*
* @since 4.0.0
*
* @param array $block_attributes The block attributes.
* @param string $block_content The block content.
* @param WP_block $block The block object.
*
* @return none The output is echoed.
*/
public function render_block_exam_question_correct_message( $block_attributes = array(), $block_content = '', WP_block $block = null ) {
$block_attributes['learndash_question_correct_message'] = $block_content;
$block_content = SFWD_LMS::get_template(
'exam/partials/exam_question_correct_message.php',
$block_attributes
);
return $block_content;
}
/**
* Render Exam Question Incorrect Block
*
* This function is called per the register_block_type() function above. This function will output
* the block rendered content.
*
* @since 4.0.0
*
* @param array $block_attributes The block attributes.
* @param string $block_content The block content.
* @param WP_block $block The block object.
*
* @return none The output is echoed.
*/
public function render_block_exam_question_incorrect_message( $block_attributes = array(), $block_content = '', WP_block $block = null ) {
$block_attributes['learndash_question_incorrect_message'] = $block_content;
$block_content = SFWD_LMS::get_template(
'exam/partials/exam_question_incorrect_message.php',
$block_attributes
);
return $block_content;
}
// End of functions.
}
}
new LearnDash_Gutenberg_Block_Exam();