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BaseModel.php

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error_log

📄BaseModel.php

<?php
/**
 * Base Model
 *
 * @package Tutor\Models
 * @author Themeum <support@themeum.com>
 * @link https://themeum.com
 * @since 3.7.0
 */

namespace Tutor\Models;

use Tutor\Helpers\QueryHelper;

/**
 * BaseModel Class.
 *
 * @since 3.7.0
 */
abstract class BaseModel {
	/**
	 * WP db instance
	 *
	 * @var \wpdb
	 */
	protected $db;

/**
	 * Table name
	 *
	 * @var string
	 */
	protected $table_name;

/**
	 * Primary key of the table
	 *
	 * @var string
	 */
	protected $primary_key = 'id';

/**
	 * Guard which fields can not be filled
	 *
	 * @var array
	 */
	protected $guarded = array( 'id' );

/**
	 * Set which fields can be filled
	 *
	 * @var string|array star(*) means all are fillable.
	 */
	protected $fillable = '*';

/**
	 * Constructor
	 */
	public function __construct() {
		global $wpdb;
		$this->db = $wpdb;

if ( $this->is_set_table() && ! $this->has_table_prefix() ) {
			$this->table_name = $this->db->prefix . $this->table_name;
		}

}

/**
	 * Check model is associated with a db table.
	 *
	 * @return boolean
	 */
	public function is_set_table() {
		return isset( $this->table_name );
	}

/**
	 * Check table as table prefix.
	 *
	 * @return boolean
	 */
	public function has_table_prefix() {
		return strpos( $this->table_name, $this->db->prefix ) === 0;
	}

/**
	 * Get table name.
	 *
	 * @return string
	 */
	public function get_table_name() {
		return $this->table_name;
	}

/**
	 * Get table fields
	 *
	 * @return array
	 */
	public function get_fields() {
		$fields = array();
		if ( isset( $this->table_name ) ) {
			foreach ( $this->db->get_col( 'DESC ' . $this->table_name, 0 ) as $column_name ) {
				$fields[] = $column_name;
			}
		}

return $fields;
	}

/**
	 * Filter inputs.
	 *
	 * @param array $inputs user inputs.
	 *
	 * @return array
	 */
	private function filter_inputs( $inputs ) {
		$table_fields = $this->get_fields();

// Remove unwanted user input key.
		$inputs = array_intersect_key( $inputs, array_flip( $table_fields ) );

// Handle fillable fields.
		if ( is_array( $this->fillable ) ) {
			$inputs = array_intersect_key( $inputs, array_flip( $this->fillable ) );
		}

// Handle guarded fields.
		if ( is_array( $this->guarded ) ) {
			$inputs = array_diff_key( $inputs, array_flip( $this->guarded ) );
		}

return $inputs;
	}

/**
	 * Get a record.
	 *
	 * @param array $where where clause.
	 *
	 * @return object|false object or false when not found.
	 */
	public function get_row( $where ) {
		$result = false;
		if ( $this->is_set_table() ) {
			$result = QueryHelper::get_row( $this->table_name, $where, $this->primary_key );
		}

return $result;
	}

/**
	 * Get all record from table.
	 *
	 * @param array  $where where clause.
	 * @param string $order_by order by.
	 * @param string $order order.
	 * @param int    $limit limit.
	 *
	 * @return array|false list of rows or false when table not set.
	 */
	public function get_all( $where, $order_by = 'id', $order = 'DESC', $limit = -1 ) {
		$results         = false;
		$order_by_column = $order_by === $this->primary_key ? $this->primary_key : $order_by;
		if ( $this->is_set_table() ) {
			$results = QueryHelper::get_all( $this->table_name, $where, $order_by_column, $limit, $order );
		}

return $results;
	}

/**
	 * Get column values
	 *
	 * @param string $column_name column name.
	 * @param array  $where where.
	 *
	 * @return array
	 */
	public function get_col( $column_name, $where ) {
		$where_clause = count( $where ) ? 'WHERE ' . QueryHelper::prepare_where_clause( $where ) : '';
		$query        = $this->db->prepare( "SELECT {$column_name} FROM {$this->table_name} {$where_clause}" );

return $this->db->get_col( $query );
	}

/**
	 * Get table record with pagination.
	 *
	 * @param integer $per_page per page record.
	 * @param integer $page current page number.
	 * @param array   $args options like alias, select, where, search, joins, groupby, having, orderby.
	 *
	 * @return object|false object contains total_record, total_page, per_page, current_page, data.
	 */
	public function paginate( $per_page = 10, $page = 1, $args = array() ) {
		if ( ! $this->is_set_table() ) {
			return false;
		}

$alias            = $args['alias'] ?? 'main';
		$table_with_alias = "{$this->table_name} AS {$alias}";

$select_clause = '*';
		$where_clause  = '';

if ( isset( $args['select'] ) ) {
			$select = $args['select'];
			if ( is_array( $select ) && count( $select ) ) {
				$select_clause = implode( ',', $args['select'] );
			}
		}

$join_clause = '';
		if ( isset( $args['joins'] ) && is_array( $args['joins'] ) ) {
			foreach ( $args['joins'] as $join ) {
				$type         = isset( $join['type'] ) ? strtoupper( $join['type'] ) : 'LEFT';
				$table        = $join['table'];
				$on           = $join['on'];
				$join_clause .= " {$type} JOIN {$table} ON {$on} ";
			}
		}

$groupby_clause = '';
		if ( isset( $args['groupby'] ) && $args['groupby'] ) {
			$groupby_clause = 'GROUP BY ' . $args['groupby'];
		}

$having_clause = '';
		if ( isset( $args['having'] ) && $args['having'] ) {
			$having_clause = 'HAVING ' . $args['having'];
		}

if ( isset( $args['where'] ) && is_array( $args['where'] ) ) {
			$where        = $args['where'];
			$where_clause = count( $where ) ? 'WHERE ' . QueryHelper::prepare_where_clause( $where ) : '';
		}

if ( isset( $args['search'] ) && is_array( $args['search'] ) ) {
			if ( count( $args['search'] ) ) {
				$where_clause .= ( empty( $where_clause ) ? 'WHERE ' : ' AND ' ) . QueryHelper::prepare_like_clause( $args['search'], 'AND' );
			}
		}

$orderby     = $args['orderby'] ?? $this->primary_key;
		$order       = 'DESC' === strtoupper( $args['order'] ?? 'DESC' ) ? 'DESC' : 'ASC';
		$orderby_sql = sanitize_sql_orderby( "{$orderby} {$order}" );

$page   = max( $page, 1 );
		$offset = ( $page - 1 ) * $per_page;
		if ( $offset < 0 ) {
			$offset = 0;
		}

$sql_query = $this->db->prepare(
			"SELECT SQL_CALC_FOUND_ROWS {$select_clause} 
				FROM {$table_with_alias} {$join_clause} {$where_clause} {$groupby_clause} {$having_clause}
				ORDER BY {$orderby_sql}
				LIMIT %d, %d",
			$offset,
			$per_page
		);

$rows = $this->db->get_results( $sql_query );

$has_records  = is_array( $rows ) && count( $rows );
		$total_record = (int) $has_records ? $this->db->get_var( 'SELECT FOUND_ROWS()' ) : 0;
		$total_page   = (int) ceil( $total_record / $per_page );
		$pagination   = array(
			'total_record' => (int) $total_record,
			'per_page'     => $per_page,
			'current_page' => $page,
			'total_page'   => $total_page,
			'data'         => $rows,
		);

return (object) $pagination;

}

/**
	 * Count record.
	 *
	 * @param array $where where clause.
	 *
	 * @return int
	 */
	public function count( $where ) {
		if ( ! $this->is_set_table() ) {
			return 0;
		}

return QueryHelper::get_count( $this->table_name, $where, array(), $this->primary_key );
	}

/**
	 * Create record
	 *
	 * @since 3.0.0
	 *
	 * @param array $data data.
	 *
	 * @return int|false id or false when creation failed.
	 */
	public function create( $data ) {
		$insert   = false;
		$filtered = $this->filter_inputs( $data );

if ( $this->is_set_table() && count( $filtered ) ) {
			$insert = $this->db->insert( $this->table_name, $filtered );
			if ( $insert ) {
				return $this->db->insert_id;
			}
		}

return $insert;
	}

/**
	 * Update record
	 *
	 * @since 3.0.0
	 *
	 * @param int   $id id.
	 * @param array $data data.
	 *
	 * @return int|false id or false when failed.
	 */
	public function update( $id, $data ) {
		$update   = false;
		$filtered = $this->filter_inputs( $data );

if ( $this->is_set_table() && count( $filtered ) ) {
			$this->db->update( $this->table_name, $filtered, array( $this->primary_key => $id ) );
			$update = $this->db->last_error ? false : $id;
		}

return $update;
	}

/**
	 * Delete a record.
	 *
	 * @since 3.0.0
	 *
	 * @param int $id id.
	 *
	 * @return bool
	 */
	public function delete( $id ) {
		$deleted = false;
		if ( $this->is_set_table() ) {
			$deleted = (bool) $this->db->delete( $this->table_name, array( $this->primary_key => $id ) );
		}

return $deleted;
	}
}