node_class/node_class.module at master · alaahaytham/node_class · GitHub

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<?php

/*
 *
 */

function node_class_preprocess_node(&$vars) {

}


/*
 * implementation of hook_permission()
 */

function node_class_permission() {
	return array(
		'administer node class' => array(
			'title' => t("Administer Node Class")
		),
	);
}

/*
 * getting css class for a given node
 */

function node_class_attributes($node) {
	$ret = array();
	$ret = db_query('SELECT nid , css_class FROM {node_class} WHERE nid = :nid', array(':nid' => $node->nid))->fetchAssoc();
	//die(print_r($ret));
  return $ret ? $ret : '';
}

/*
 * implementation of hook_form_alter
 */

function node_class_form_alter(&$form, &$form_state, $form_id) {
	// check form type && user_access ok
	if (isset($form['#node']) && ($form_id == $form['#node']->type . '_node_form') && user_access('administer node class'))  {
		$form['node_class'] = array(
			'#type' => 'fieldset',
			'#title' => t('Node Class Settings'),
			'#collapsible' => TRUE,
			'#weight' => -1,
			'#tree' => TRUE
		);

	 //get css attributes information
	$attributes = node_class_attributes($form['#node']);
	//die(print_r($form['#node']));
	 //check CSS exists in DB to prepare SQL update
	if (!empty($attributes)) {
		$form['node_class']['existing_css'] = array(
			'#value' => 1,
			'#type' => 'hidden'
		);
	}
	else {
		$form['node_class']['existing_css'] = array(
			'#value' => false,
		);
	}

	$form['node_class']['css_class'] = array(
    '#type' => 'textfield',
    '#title' => t('CSS class(es)'),
    '#default_value' => $attributes ? $attributes['css_class'] : '',
    '#description' => t('Separate classes with a space. IMPORTANT: You must add &lt;?php print node_class($node); ?&gt; to your theme\'s node.tpl.php file to make the classes appear.'),
	);

	// adding submit handler for node_class module
	$form['#submit'][] = 'node_class_form_submit';


	}
}

/*
 *
 */

function node_class_node_delete($node) {
	db_delete('node_class')
	->condition('nid', $node->nid)
	->execute();
}

/*
 * submit handler
 */

function node_class_form_submit($form, &$form_state) {
	if ($form_state['values']['form_id'] == $form['#node']->type .'_node_form') {
    if (isset($form_state['values']['node_class']['css_class']) && user_access('administer nodes')) {
      $nid = $form_state['values']['nid'];
      $class = check_plain($form_state['values']['node_class']['css_class']);

      // CRUD test
      if (!isset($form_state['values']['node_class']['existing_class'])) {
      	if ($class) {
        		db_insert('node_class')
          	->fields(array(
          		'nid' => $nid,
          		'css_class' => $class
          	))
          	->execute();
        	}

      }

        elseif (isset($form_state['values']['node_class']['existing_class'])) {
        	db_update('node_class')
        ->fields(array(
        	'css_class' => $class,
        ))
        ->condition('nid', $node->nid)
        ->execute();
       }
    }

   }
}

/*
* Accessor for css_class information
*/

function node_class($node) {
  $attributes = node_class_attributes($node);
  if ($attributes) {
  return $attributes['css_class'];
  }
}