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<?php
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// $Id: views_customfield.module,v 1.2 2008/10/30 18:45:23 casey Exp $
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/**
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* Implementation of hook_views_tables()
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*
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* @return array
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*/
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function views_customfield_views_tables() {
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$tables['views_customfield'] = array(
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'fields' => array(
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'text' => array(
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'name' => t('Views Custom field: Text'),
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'help' => t('Display row-specific custom text.'),
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'sortable' => FALSE,
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'notafield' => TRUE,
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'handler' => 'views_customfield_text_field_handler',
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/**
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* @see http://drupal.org/node/99792#option (complex option fields)
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*/
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'option' => array(
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'value' => array(
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'#type' => 'textarea',
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'#title' => t('Value'),
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'#description' =>
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t('The text that should be displayed.')
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.' '.t('Include <?php ?> delimiters when using PHP code.')
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.' '.t('Available variables:').'<br/>'
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.t('$data: contains the entire record from the database (e.g. $data->nid).').'<br/>'
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.t('$static: can be used to store reusable data per row.')
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,
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'#rows' => 5,
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),
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'#type' => 'views_customfield_option',
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'#process' => array('_views_customfield_text_option_process' => array()),
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'#after_build' => array('_views_customfield_text_option_after_build'),
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),
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)
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)
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);
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if (module_exists('validator_phpcode')) {
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$tables['views_customfield']['fields']['text']['validate'] = 'views_customfield_text_field_validate';
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}
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return $tables;
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}
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/**
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* Validate field settings.
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*
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* Make sure PHP code doesn't contain any errors.
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*
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* @see http://drupal.org/node/99565#fields
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*
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* @param array $fielddata
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* @param array $view
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* @param array $form
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*/
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function views_customfield_text_field_validate($fielddata, $view, $form) {
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$options = unserialize($fielddata['options']);
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$code = $options['value'];
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if (($error = validator_phpcode_has_errors($code))) {
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// TODO not very efficient, but $fielddata doesn't contain position-info
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// Some other way possible?
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for ($i=0;$i<$view['field']['count'];$i++) {
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if ($form['field'][$i]['fullname']['#value'] == 'views_customfield.text'
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&& $form['field'][$i]['options']['value']['#value'] == $code) {
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$msg = t('Views Custom field') .': '. $error[0] .' on line '. $error[1];
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form_error($form['field'][$i]['options']['value'], $msg);
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return;
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}
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}
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}
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}
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/**
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* Format a text-customfield.
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*
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* @param array $fieldinfo
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* @param array $fielddata
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* @param string $value
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* @param object $data
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* @return string
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*/
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function views_customfield_text_field_handler($fieldinfo, $fielddata, $value, $data) {
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static $static;
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// TODO should be possible to unserialize just once per view/field
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$options = unserialize($fielddata['options']);
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return _views_customfield_eval($options['value'], $static[$fielddata['position']], $data);
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}
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/**
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* Evaluate a string of PHP code. Mostly copied from drupal_eval().
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*
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* @param string $code
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* @param mixed $static
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* @param array $data
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* @return string
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*/
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function _views_customfield_eval($code, &$static, $data) {
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global $theme_path, $theme_info, $conf;
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// Store current theme path.
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$old_theme_path = $theme_path;
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// Restore theme_path to the theme, as long as drupal_eval() executes,
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// so code evaluted will not see the caller module as the current theme.
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// If theme info is not initialized get the path from theme_default.
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if (!isset($theme_info)) {
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$theme_path = drupal_get_path('theme', $conf['theme_default']);
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}
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else {
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$theme_path = dirname($theme_info->filename);
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}
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ob_start();
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print eval('?>'. $code);
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$output = ob_get_contents();
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ob_end_clean();
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// Recover original theme path.
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$theme_path = $old_theme_path;
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return $output;
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}
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/**
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* The #process takes the serialized #default_value and feeds
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* the forms beneath it.
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*
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* @param array $element
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* @return array
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*/
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function _views_customfield_text_option_process($element) {
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$values = unserialize($element['#default_value']);
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if (!is_array($values)) {
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// set default values for options that have no stored value.
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$values = array(
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'value' => '');
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}
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$element['value']['#default_value'] = $values['value'];
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return $element;
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}
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/**
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* Put the value back.
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*
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* @param array $element
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* @return array
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*/
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function _views_customfield_text_option_after_build($element) {
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$values = array();
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$values['value'] = $element['value']['#value'];
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$element['#value'] = serialize($values);
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form_set_value($element, $element['#value']);
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return $element;
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}
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/**
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* Creates output for the views_customfield_option form-element type.
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* Contains a small hack to improve the UI when editing a view.
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*
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* @return string
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*/
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function theme_views_customfield_option($element) {
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return '</td><td colspan="7"></td></tr><tr><td colspan="4">'.$element['#children'];
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}
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