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class views_plugin_row_rss_fields in Views (for Drupal 7) 7.3

Renders an RSS item based on fields.

Hierarchy

Expanded class hierarchy of views_plugin_row_rss_fields

1 string reference to 'views_plugin_row_rss_fields'
views_views_plugins in includes/plugins.inc
Implements hook_views_plugins().

File

plugins/views_plugin_row_rss_fields.inc, line 11
Definition of views_plugin_row_rss_fields.

View source 
class views_plugin_row_rss_fields extends views_plugin_row {

  /**
   * {@inheritdoc}
   */
  public function option_definition() {
    $options = parent::option_definition();
    $options['title_field'] = array(
      'default' => '',
    );
    $options['link_field'] = array(
      'default' => '',
    );
    $options['description_field'] = array(
      'default' => '',
    );
    $options['creator_field'] = array(
      'default' => '',
    );
    $options['date_field'] = array(
      'default' => '',
    );
    $options['guid_field_options']['guid_field'] = array(
      'default' => '',
    );
    $options['guid_field_options']['guid_field_is_permalink'] = array(
      'default' => TRUE,
      'bool' => TRUE,
    );
    return $options;
  }

  /**
   * {@inheritdoc}
   */
  public function options_form(&$form, &$form_state) {
    parent::options_form($form, $form_state);
    $initial_labels = array(
      '' => t('- None -'),
    );
    $view_fields_labels = $this->display->handler
      ->get_field_labels();
    $view_fields_labels = array_merge($initial_labels, $view_fields_labels);
    $form['title_field'] = array(
      '#type' => 'select',
      '#title' => t('Title field'),
      '#description' => t('The field that is going to be used as the RSS item title for each row.'),
      '#options' => $view_fields_labels,
      '#default_value' => $this->options['title_field'],
      '#required' => TRUE,
    );
    $form['link_field'] = array(
      '#type' => 'select',
      '#title' => t('Link field'),
      '#description' => t('The field that is going to be used as the RSS item link for each row. This must be a drupal relative path.'),
      '#options' => $view_fields_labels,
      '#default_value' => $this->options['link_field'],
      '#required' => TRUE,
    );
    $form['description_field'] = array(
      '#type' => 'select',
      '#title' => t('Description field'),
      '#description' => t('The field that is going to be used as the RSS item description for each row.'),
      '#options' => $view_fields_labels,
      '#default_value' => $this->options['description_field'],
      '#required' => TRUE,
    );
    $form['creator_field'] = array(
      '#type' => 'select',
      '#title' => t('Creator field'),
      '#description' => t('The field that is going to be used as the RSS item creator for each row.'),
      '#options' => $view_fields_labels,
      '#default_value' => $this->options['creator_field'],
      '#required' => TRUE,
    );
    $form['date_field'] = array(
      '#type' => 'select',
      '#title' => t('Publication date field'),
      '#description' => t('The field that is going to be used as the RSS item pubDate for each row. It needs to be in RFC 2822 format.'),
      '#options' => $view_fields_labels,
      '#default_value' => $this->options['date_field'],
      '#required' => TRUE,
    );
    $form['guid_field_options'] = array(
      '#type' => 'fieldset',
      '#title' => t('GUID settings'),
      '#collapsible' => FALSE,
      '#collapsed' => FALSE,
    );
    $form['guid_field_options']['guid_field'] = array(
      '#type' => 'select',
      '#title' => t('GUID field'),
      '#description' => t('The globally unique identifier of the RSS item.'),
      '#options' => $view_fields_labels,
      '#default_value' => $this->options['guid_field_options']['guid_field'],
      '#required' => TRUE,
    );
    $form['guid_field_options']['guid_field_is_permalink'] = array(
      '#type' => 'checkbox',
      '#title' => t('GUID is permalink'),
      '#description' => t('The RSS item GUID is a permalink.'),
      '#default_value' => $this->options['guid_field_options']['guid_field_is_permalink'],
    );
  }

  /**
   *
   */
  public function validate() {
    $errors = parent::validate();
    $required_options = array(
      'title_field',
      'link_field',
      'description_field',
      'creator_field',
      'date_field',
    );
    foreach ($required_options as $required_option) {
      if (empty($this->options[$required_option])) {
        $errors[] = t('Row style plugin requires specifying which views fields to use for RSS item.');
        break;
      }
    }

    // Once more for guid.
    if (empty($this->options['guid_field_options']['guid_field'])) {
      $errors[] = t('Row style plugin requires specifying which views fields to use for RSS item.');
    }
    return $errors;
  }

  /**
   * {@inheritdoc}
   */
  public function render($row) {
    static $row_index;
    if (!isset($row_index)) {
      $row_index = 0;
    }
    if (function_exists('rdf_get_namespaces')) {

      // Merge RDF namespaces in the XML namespaces in case they are used
      // further in the RSS content.
      $xml_rdf_namespaces = array();
      foreach (rdf_get_namespaces() as $prefix => $uri) {
        $xml_rdf_namespaces['xmlns:' . $prefix] = $uri;
      }
      $this->view->style_plugin->namespaces += $xml_rdf_namespaces;
    }

    // Create the RSS item object.
    $item = new stdClass();
    $item->title = $this
      ->get_field($row_index, $this->options['title_field']);
    $item->link = url($this
      ->get_field($row_index, $this->options['link_field']), array(
      'absolute' => TRUE,
    ));
    $item->description = $this
      ->get_field($row_index, $this->options['description_field']);
    $item->elements = array(
      array(
        'key' => 'pubDate',
        'value' => $this
          ->get_field($row_index, $this->options['date_field']),
      ),
      array(
        'key' => 'dc:creator',
        'value' => $this
          ->get_field($row_index, $this->options['creator_field']),
        'namespace' => array(
          'xmlns:dc' => 'http://purl.org/dc/elements/1.1/',
        ),
      ),
    );
    $guid_is_permalink_string = 'false';
    $item_guid = $this
      ->get_field($row_index, $this->options['guid_field_options']['guid_field']);
    if ($this->options['guid_field_options']['guid_field_is_permalink']) {
      $guid_is_permalink_string = 'true';
      $item_guid = url($item_guid, array(
        'absolute' => TRUE,
      ));
    }
    $item->elements[] = array(
      'key' => 'guid',
      'value' => $item_guid,
      'attributes' => array(
        'isPermaLink' => $guid_is_permalink_string,
      ),
    );
    $row_index++;
    foreach ($item->elements as $element) {
      if (isset($element['namespace'])) {
        $this->view->style_plugin->namespaces = array_merge($this->view->style_plugin->namespaces, $element['namespace']);
      }
    }
    return theme($this
      ->theme_functions(), array(
      'view' => $this->view,
      'options' => $this->options,
      'row' => $item,
      'field_alias' => isset($this->field_alias) ? $this->field_alias : '',
    ));
  }

  /**
   * Retrieves a views field value from the style plugin.
   *
   * @param int $index
   *   The index of the row as expected by views_plugin_style::get_field().
   * @param string $field_id
   *   The ID assigned to the required field in the display.
   */
  public function get_field($index, $field_id) {
    if (empty($this->view->style_plugin) || !is_object($this->view->style_plugin) || empty($field_id)) {
      return '';
    }
    return $this->view->style_plugin
      ->get_field($index, $field_id);
  }

}

Members

Namesort descending Modifiers Type Description Overrides
views_object::$definition public property Handler's definition.
views_object::$options public property Except for displays, options for the object will be held here. 1
views_object::altered_option_definition function Collect this handler's option definition and alter them, ready for use.
views_object::construct public function Views handlers use a special construct function. 4
views_object::destroy public function Destructor. 2
views_object::export_option public function 1
views_object::export_options public function
views_object::export_option_always public function Always exports the option, regardless of the default value.
views_object::options Deprecated public function Set default options on this object. 1
views_object::set_default_options public function Set default options.
views_object::set_definition public function Let the handler know what its full definition is.
views_object::unpack_options public function Unpack options over our existing defaults, drilling down into arrays so that defaults don't get totally blown away.
views_object::unpack_translatable public function Unpack a single option definition.
views_object::unpack_translatables public function Unpacks each handler to store translatable texts.
views_object::_set_option_defaults public function
views_plugin::$display public property The current used views display.
views_plugin::$plugin_name public property The plugin name of this plugin, for example table or full.
views_plugin::$plugin_type public property The plugin type of this plugin, for example style or query.
views_plugin::$view public property The top object of a view. Overrides views_object::$view 1
views_plugin::additional_theme_functions public function Provide a list of additional theme functions for the theme info page.
views_plugin::plugin_title public function Return the human readable name of the display.
views_plugin::summary_title public function Returns the summary of the settings in the display. 8
views_plugin::theme_functions public function Provide a full list of possible theme templates used by this style.
views_plugin_row::init public function 2
views_plugin_row::options_submit public function Perform any necessary changes to the form values prior to storage. There is no need for this function to actually store the data. Overrides views_plugin::options_submit 1
views_plugin_row::options_validate public function Validate the options form. Overrides views_plugin::options_validate
views_plugin_row::pre_render public function Allow the style to do stuff before each row is rendered. 5
views_plugin_row::query public function Add anything to the query that we might need to. Overrides views_plugin::query
views_plugin_row::uses_fields public function
views_plugin_row_rss_fields::get_field public function Retrieves a views field value from the style plugin.
views_plugin_row_rss_fields::options_form public function Provide a form for setting options. Overrides views_plugin_row::options_form
views_plugin_row_rss_fields::option_definition public function Information about options for all kinds of purposes will be held here. Overrides views_plugin_row::option_definition
views_plugin_row_rss_fields::render public function Render a row object. This usually passes through to a theme template of some form, but not always. Overrides views_plugin_row::render
views_plugin_row_rss_fields::validate public function Validate that the plugin is correct and can be saved. Overrides views_plugin::validate