/Meta/View/Helper/MetaHelper.php

<?php

App::uses('AppHelper', 'View/Helper');

/**
 * Meta Helper
 *
 * @category Meta.View/Helper
 * @package  Croogo.Meta
 * @version  1.0
 * @author   Fahad Ibnay Heylaal <contact@fahad19.com>
 * @license  http://www.opensource.org/licenses/mit-license.php The MIT License
 * @link     http://www.croogo.org
 */
class MetaHelper extends AppHelper {

/**
 * Helpers
 */
	public $helpers = array(
		'Html',
		'Form',
	);

/**
* beforeRender
 */
	public function beforeRender($viewFile) {
		if ($this->_View->Layout->isLoggedIn()) {
			return $this->_View->Croogo->adminScript('Meta.admin');
		}
	}

/**
 * Meta tags
 *
 * @return string
 */
	public function meta($metaForLayout = array()) {
		$_metaForLayout = array();
		if (is_array(Configure::read('Meta'))) {
			$_metaForLayout = Configure::read('Meta');
		}

		if (count($metaForLayout) == 0 &&
			isset($this->_View->viewVars['node']['CustomFields']) &&
			count($this->_View->viewVars['node']['CustomFields']) > 0) {
			$metaForLayout = array();
			foreach ($this->_View->viewVars['node']['CustomFields'] as $key => $value) {
				if (strstr($key, 'meta_')) {
					$key = str_replace('meta_', '', $key);
					$metaForLayout[$key] = $value;
				}
			}
		}

		$metaForLayout = array_merge($_metaForLayout, $metaForLayout);

		$output = '';
		foreach ($metaForLayout as $name => $content) {
			if (is_array($content) && isset($content['content'])) {
				$attr = key($content);
				$attrValue = $content[$attr];
				$value = $content['content'];
			} else {
				$attr = 'name';
				$attrValue = $name;
				$value = $content;
			}
			$output .= '<meta ' . $attr . '="' . $attrValue . '" content="' . $value . '" />';
		}

		return $output;
	}

/**
 * Meta field: with key/value fields
 *
 * @param string $key (optional) key
 * @param string $value (optional) value
 * @param integer $id (optional) ID of Meta
 * @param array $options (optional) options
 * @return string
 */
	public function field($key = '', $value = null, $id = null, $options = array()) {
		$_options = array(
			'key' => array(
				'label' => __d('croogo', 'Key'),
				'value' => $key,
				'class' => 'span12'
			),
			'value' => array(
				'label' => __d('croogo', 'Value'),
				'value' => $value,
				'class' => 'span12',
				'type' => 'textarea',
				'rows' => 2,
			),
		);
		$options = Hash::merge($_options, $options);
		$uuid = String::uuid();

		$fields = '';
		if ($id != null) {
			$fields .= $this->Form->input('Meta.' . $uuid . '.id', array('type' => 'hidden', 'value' => $id));
			$this->Form->unlockField('Meta.' . $uuid . '.id');
		}
		$fields .= $this->Form->input('Meta.' . $uuid . '.key', $options['key']);
		$fields .= $this->Form->input('Meta.' . $uuid . '.value', $options['value']);
		$this->Form->unlockField('Meta.' . $uuid . '.key');
		$this->Form->unlockField('Meta.' . $uuid . '.value');
		$fields = $this->Html->tag('div', $fields, array('class' => 'fields'));

		$id = is_null($id) ? $uuid : $id;
		$deleteUrl = array(
			'admin' => true, 'plugin' => 'meta',
			'controller' => 'meta', 'action' => 'delete_meta'
		);
		$deleteUrl[] = $id;
		$actions = $this->Html->link(
			__d('croogo', 'Remove'),
			$deleteUrl,
			array('class' => 'remove-meta', 'rel' => $id)
		);
		$actions = $this->Html->tag('div', $actions, array('class' => 'actions'));

		$output = $this->Html->tag('div', $actions . $fields, array('class' => 'meta'));
		return $output;
	}

}