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Edit File: lists-fix.php

<?php

defined( 'ABSPATH' ) or exit( 'No direct script access allowed' );

/**
 * Fixes admin lists for dates
 *
 * @author              Mobin Ghasempoor
 * @package             WP-Parsidate
 * @subpackage          Admin/Lists
 */

/**
 * Enqueues admin scripts
 *
 * @return              void
 * @author              Ehsaan
 */
function wpp_enqueue_admin_scripts() {
	global $wpp_months_name;

$suffix = ( defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ) || wpp_is_active( 'dev_mode' ) ? '' : '.min';

wp_enqueue_script( 'wpp_admin', WP_PARSI_URL . 'assets/js/admin' . $suffix . '.js', false, WP_PARSI_VER );
	wp_localize_script(
		'wpp_admin',
		'WPP_I18N',
		array(
			'months' => $wpp_months_name
		)
	);
}

add_action( 'admin_enqueue_scripts', 'wpp_enqueue_admin_scripts' );

/**
 * Hooks admin functions for restrict posts in edit pages
 *
 * @return              void
 */
function wpp_backend_init() {
	add_action( 'restrict_manage_posts', 'wpp_restrict_posts' );
	add_filter( 'posts_where', 'wpp_admin_posts_where' );
}

add_action( 'load-edit.php', 'wpp_backend_init' );

/**
 * Limits posts to a certain date, if date setted
 *
 * @param string $where Query pointer
 *
 * @return              string New Pointer
 */
function wpp_admin_posts_where( $where ) {
	global $wp_query;

if ( isset( $_GET['mfa'] ) && $_GET['mfa'] != '0' ) {
		$wp_query->query_vars['m'] = $_GET['mfa'];
		$where                     = wpp_posts_where( $where, $wp_query );
	}

return $where;
}

/**
 * Restrict posts to given date
 * @return            void
 * @author            Parsa Kafi
 * @author            Mobin Ghasempoor
 */
function wpp_restrict_posts() {
	global $post_type, $post_status, $wpdb, $wpp_months_name;

if ( apply_filters( 'disable_months_dropdown', false, $post_type ) ) {
		return;
	}

$post_status_w = "AND post_status <> 'auto-draft'";

if ( $post_status != "" ) {
		if ( is_string( $post_status ) ) {
			$post_status_w .= " AND post_status = '$post_status'";
		}
	} else {
		$post_status_w .= " AND post_status <> 'trash'";
	}

$sql = "
		SELECT DISTINCT date( post_date ) AS date
        FROM $wpdb->posts
        WHERE post_type='$post_type' $post_status_w  AND date( post_date ) <> '0000-00-00'
        ORDER BY post_date
        ";

$list = $wpdb->get_col( $sql );

if ( empty( $list ) ) {
		return;
	}

$m       = isset( $_GET['mfa'] ) ? (int) $_GET['mfa'] : 0;
	$predate = '';

echo '<select name="mfa">';
	echo '<option ' . selected( $m, 0, false ) . ' value="0">' . __( 'Show All Dates', 'wp-parsidate' ) . '</option>' . PHP_EOL;

foreach ( $list as $date ) {
		$date  = parsidate( 'Ym', $date, 'eng' );
		$year  = substr( $date, 0, 4 );
		$month = substr( $date, 4, 2 );
		$month = $wpp_months_name[ (int) $month ];

if ( $predate != $date ) {
			echo sprintf( '<option %s value="%s">%s</option>', selected( $m, $date, false ), $date, $month . ' ' . fix_number( $year ) );
		}

$predate = $date;
	}

echo '</select>';
}

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