[cms] Allow specifying "robots" meta for pages [5.3.0-B1]

On website there are pages of 2 conceptual types:

pages that makes sense for robots (e.g. Google) to index (show in search results)
pages, that doesn't make to index (e.g. "No Permissions", "Form Submitted Template")

For later page category it makes sense to add following into <head>:

<meta name="robots" content="nofollow, noindex, noarchive"/>

Solution

html_head.elm.tpl

<inp2:m_if check="c.current_Field" name="MetaKeywords"><meta name="Keywords" content="<inp2:c.current_PageInfo name='MetaKeywords'/>"/></inp2:m_if>

/core/units/categories/categories_config.php

'Fields' => Array (

	.....

'MetaNofollowNoindex' => Array (
	'type' => 'string',
	'formatter' => 'kOptionsFormatter', 'options' => Array ('nofollow' => 'NoFollow', 'noindex' => 'NoIndex', 'noarchive' => 'NoArchive', 'noimageindex' => 'NoImageIndex', 'noodp' => 'NoOdp',  'nosnippet' => 'NoSnippet'),
 	'default' => NULL
),
	.....
),

/core/units/categories/categories_tag_processor.php

function PageInfo($params){
 $page =& $this->_getPage($params);

 switch ($params['type']) {

	.....

 case 'meta_nofollownoindex':
 $db_field = 'MetaNofollowNoindex';
 break;

	.....

 default:
 return '';
 }

 $default = isset($params['default']) ? $params['default'] : '';
 $val = $page->GetField($db_field);

 if ($db_field == 'MetaNofollowNoindex') {
 return str_replace('|',', ',trim($val,'|'));
 }
		.....

 return $val;
}

file categories_edit.tpl
<inp2:m_RenderElement name="inp_edit_checkboxes" prefix="c" field="MetaNofollowNoindex" title="la_fld_MetaNofollowNoindex" />




 sql for update table Categories

ALTER TABLE TABLE_PREFIX.Categories ADD `MetaNofollowNoindex` VARCHAR(30) NULL DEFAULT NULL AFTER `RequireLogin`;