<?php
/**
* This file implements the ItemTag class.
*
* This file is part of the b2evolution/evocms project - {@link http://b2evolution.net/}.
* See also {@link https://github.com/b2evolution/b2evolution}.
*
* @license GNU GPL v2 - {@link http://b2evolution.net/about/gnu-gpl-license}
*
* @copyright (c)2003-2020 by Francois Planque - {@link http://fplanque.com/}.
*
* @license http://b2evolution.net/about/license.html GNU General Public License (GPL)
*
* @package evocore
*/
if( !defined('EVO_MAIN_INIT') ) die( 'Please, do not access this page directly.' );
load_class( '_core/model/dataobjects/_dataobject.class.php', 'DataObject' );
/**
* ItemTag Class
*
* @package evocore
*/
class ItemTag extends DataObject
{
var $name;
/**
* Constructor
*
* @param object table Database row
*/
function __construct( $db_row = NULL )
{
// Call parent constructor:
parent::__construct( 'T_items__tag', 'tag_', 'tag_ID' );
if( $db_row != NULL )
{
$this->ID = $db_row->tag_ID;
$this->name = $db_row->tag_name;
}
}
/**
* Get delete cascade settings
*
* @return array
*/
static function get_delete_cascades()
{
return array(
array( 'table' => 'T_items__itemtag', 'fk' => 'itag_tag_ID', 'msg' => /* TRANS: cascade delete */ T_('%d tags from the posts') ),
);
}
/**
* Set param value
*
* @param string parameter name
* @param mixed parameter value
* @param boolean true to set to NULL if empty value
* @return boolean true, if a value has been set; false if it has not changed
*/
function set( $parname, $parvalue, $make_null = false )
{
return $this->set_param( $parname, 'string', $parvalue, $make_null );
}
/**
* Load data from Request form fields.
*
* @return boolean true if loaded data seems valid.
*/
function load_from_Request()
{
// Name
$tag_name = param( 'tag_name', 'string', true );
param_check_regexp( 'tag_name', '/^[^,]+$/', T_('Tags cannot contain commas.') );
$this->set( 'name', $tag_name );
if( $existing_tag_ID = $this->dbexists( 'tag_name', $tag_name ) )
{ // Other tag already exists with the same name:
if( empty( $this->ID ) )
{ // Suggest to edit existing tag for new creating tag
param_error( 'tag_name', sprintf( T_('This tag already exists. Do you want to <a %s>edit the existing tag</a>?'),
'href="?ctrl=itemtags&action=edit&tag_ID='.$existing_tag_ID.'"' ) );
}
else
{ // Suggest to merge for existing tag
global $DB, $Messages, $display_merge_tags_form;
$new_tag_posts = intval( $DB->get_var( 'SELECT COUNT( itag_itm_ID ) FROM T_items__itemtag WHERE itag_tag_ID = '.$DB->quote( $existing_tag_ID ) ) );
$old_tag_posts = intval( $DB->get_var( 'SELECT COUNT( itag_itm_ID ) FROM T_items__itemtag WHERE itag_tag_ID = '.$DB->quote( $this->ID ) ) );
// Set this to know to display a confirmation message to merge this tag
$this->merge_tag_ID = $existing_tag_ID;
$this->merge_message = sprintf( T_('The previously named "%s" tag (applied to %d posts) will be merged with the existing "%s" tag (already applied to %d posts). Are you sure?' ),
$this->dget( 'name' ),
$old_tag_posts,
$tag_name,
$new_tag_posts,
'href="?ctrl=itemtags&action=merge&old_tag_ID='.$this->ID.'&tag_ID='.$existing_tag_ID.'&'.url_crumb( 'tag' ).'"',
'href="?ctrl=itemtags&action=edit&tag_ID='.$this->ID.'"' );
// Return FALSE to don't save current changes without confirmation
return false;
}
}
return ! param_errors_detected();
}
}
?>