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abstract class Mapping in Views (for Drupal 7) 8.3

Allows fields to be mapped to specific use cases.

Hierarchy

Expanded class hierarchy of Mapping

Related topics

Views style plugins
Style plugins control how a view is rendered. For example, they can choose to display a collection of fields, node_view() output, table output, or any kind of crazy output they want.
1 file declares its use of Mapping
MappingTest.php in tests/views_test_data/lib/Drupal/views_test_data/Plugin/views/style/MappingTest.php
Definition of Drupal\views_test_data\Plugin\views\style\MappingTest;

File

lib/Drupal/views/Plugin/views/style/Mapping.php, line 15
Definition of Drupal\views\Plugin\views\style\Mapping.

Namespace

Drupal\views\Plugin\views\style
View source 
abstract class Mapping extends StylePluginBase {

  /**
   * Do not use grouping.
   *
   * @var bool
   */
  protected $usesGrouping = FALSE;

  /**
   * Use fields without a row plugin.
   *
   * @var bool
   */
  protected $usesFields = TRUE;

  /**
   * Builds the list of field mappings.
   *
   * @return array
   *   An associative array, keyed by the field name, containing the following
   *   key-value pairs:
   *   - #title: The human-readable label for this field.
   *   - #default_value: The default value for this field. If not provided, an
   *     empty string will be used.
   *   - #description: A description of this field.
   *   - #required: Whether this field is required.
   *   - #filter: (optional) A method on the plugin to filter field options.
   *   - #toggle: (optional) If this select should be toggled by a checkbox.
   */
  protected abstract function defineMapping();

  /**
   * Overrides Drupal\views\Plugin\views\style\StylePluginBase::defineOptions().
   */
  protected function defineOptions() {
    $options = parent::defineOptions();

    // Parse the mapping and add a default for each.
    foreach ($this
      ->defineMapping() as $key => $value) {
      $default = !empty($value['#multiple']) ? array() : '';
      $options['mapping']['contains'][$key] = array(
        'default' => isset($value['#default_value']) ? $value['#default_value'] : $default,
      );
      if (!empty($value['#toggle'])) {
        $options['mapping']['contains']["toggle_{$key}"] = array(
          'default' => FALSE,
          'bool' => TRUE,
        );
      }
    }
    return $options;
  }

  /**
   * Overrides Drupal\views\Plugin\views\style\StylePluginBase::buildOptionsForm().
   */
  public function buildOptionsForm(&$form, &$form_state) {
    parent::buildOptionsForm($form, $form_state);

    // Get the mapping.
    $mapping = $this
      ->defineMapping();

    // Restrict the list of defaults to the mapping, in case they have changed.
    $options = array_intersect_key($this->options['mapping'], $mapping);

    // Get the labels of the fields added to this display.
    $field_labels = $this->displayHandler
      ->getFieldLabels();

    // Provide some default values.
    $defaults = array(
      '#type' => 'select',
      '#required' => FALSE,
      '#multiple' => FALSE,
    );

    // For each mapping, add a select element to the form.
    foreach ($options as $key => $value) {

      // If the field is optional, add a 'None' value to the top of the options.
      $field_options = array();
      $required = !empty($mapping[$key]['#required']);
      if (!$required && empty($mapping[$key]['#multiple'])) {
        $field_options = array(
          '' => t('- None -'),
        );
      }
      $field_options += $field_labels;

      // Optionally filter the available fields.
      if (isset($mapping[$key]['#filter'])) {
        $this->view
          ->initHandlers();
        $this::$mapping[$key]['#filter']($field_options);
        unset($mapping[$key]['#filter']);
      }

      // These values must always be set.
      $overrides = array(
        '#options' => $field_options,
        '#default_value' => $options[$key],
      );

      // Optionally allow the select to be toggleable.
      if (!empty($mapping[$key]['#toggle'])) {
        $form['mapping']["toggle_{$key}"] = array(
          '#type' => 'checkbox',
          '#title' => t('Use a custom %field_name', array(
            '%field_name' => strtolower($mapping[$key]['#title']),
          )),
          '#default_value' => $this->options['mapping']["toggle_{$key}"],
        );
        $overrides['#states']['visible'][':input[name="style_options[mapping][' . "toggle_{$key}" . ']"]'] = array(
          'checked' => TRUE,
        );
      }
      $form['mapping'][$key] = $overrides + $mapping[$key] + $defaults;
    }
  }

  /**
   * Overrides Drupal\views\Plugin\views\style\StylePluginBase::render().
   *
   * Provides the mapping definition as an available variable.
   */
  function render() {
    return theme($this
      ->themeFunctions(), array(
      'view' => $this->view,
      'options' => $this->options,
      'rows' => $this->view->result,
      'mapping' => $this
        ->defineMapping(),
    ));
  }

}

Members

Namesort descending Modifiers Type Description Overrides
Mapping::$usesFields protected property Use fields without a row plugin. Overrides StylePluginBase::$usesFields
Mapping::$usesGrouping protected property Do not use grouping. Overrides StylePluginBase::$usesGrouping
Mapping::buildOptionsForm public function Overrides Drupal\views\Plugin\views\style\StylePluginBase::buildOptionsForm(). Overrides StylePluginBase::buildOptionsForm
Mapping::defineMapping abstract protected function Builds the list of field mappings. 1
Mapping::defineOptions protected function Overrides Drupal\views\Plugin\views\style\StylePluginBase::defineOptions(). Overrides StylePluginBase::defineOptions
Mapping::render function Overrides Drupal\views\Plugin\views\style\StylePluginBase::render(). Overrides StylePluginBase::render
PluginBase::$configuration protected property Configuration information passed into the plugin. 1
PluginBase::$definition public property Plugins's definition
PluginBase::$displayHandler public property The display object this plugin is for.
PluginBase::$options public property Options for this plugin will be held here.
PluginBase::$pluginDefinition protected property The plugin implementation definition. 1
PluginBase::$pluginId protected property The plugin_id.
PluginBase::$view public property The top object of a view. 1
PluginBase::additionalThemeFunctions public function Provide a list of additional theme functions for the theme information page
PluginBase::DERIVATIVE_SEPARATOR constant A string which is used to separate base plugin IDs from the derivative ID.
PluginBase::getBaseId public function Gets the base_plugin_id of the plugin instance. Overrides DerivativeInspectionInterface::getBaseId
PluginBase::getDerivativeId public function Gets the derivative_id of the plugin instance. Overrides DerivativeInspectionInterface::getDerivativeId
PluginBase::getPluginDefinition public function Gets the definition of the plugin implementation. Overrides PluginInspectionInterface::getPluginDefinition 3
PluginBase::getPluginId public function Gets the plugin_id of the plugin instance. Overrides PluginInspectionInterface::getPluginId
PluginBase::isConfigurable public function Determines if the plugin is configurable.
PluginBase::pluginTitle public function Return the human readable name of the display.
PluginBase::setOptionDefaults protected function
PluginBase::submitOptionsForm public function Handle any special handling on the validate form. 10
PluginBase::summaryTitle public function Returns the summary of the settings in the display. 6
PluginBase::themeFunctions public function Provide a full list of possible theme templates used by this style. 1
PluginBase::unpackOptions public function Unpack options over our existing defaults, drilling down into arrays so that defaults don't get totally blown away.
PluginBase::usesOptions public function Returns the usesOptions property. 8
PluginBase::__construct public function Constructs a Plugin object. Overrides PluginBase::__construct 2
StylePluginBase::$row_plugin property Contains the row plugin, if it's initialized and the style itself supports it.
StylePluginBase::$row_tokens property Store all available tokens row rows.
StylePluginBase::$usesOptions protected property Overrides Drupal\views\Plugin\Plugin::$usesOptions. Overrides PluginBase::$usesOptions
StylePluginBase::$usesRowClass protected property Does the style plugin support custom css class for the rows. 4
StylePluginBase::$usesRowPlugin protected property Does the style plugin allows to use style plugins. 6
StylePluginBase::build_sort function Called by the view builder to see if this style handler wants to interfere with the sorts. If so it should build; if it returns any non-TRUE value, normal sorting will NOT be added to the query. 1
StylePluginBase::build_sort_post function Called by the view builder to let the style build a second set of sorts that will come after any other sorts in the view. 1
StylePluginBase::destroy public function Clears a plugin. Overrides PluginBase::destroy
StylePluginBase::even_empty function Should the output of the style plugin be rendered even if it's a empty view. 1
StylePluginBase::get_field function Get a rendered field.
StylePluginBase::get_field_value function Get the raw field value.
StylePluginBase::get_row_class function Return the token replaced row class for the specified row.
StylePluginBase::init public function Initialize a style plugin.
StylePluginBase::pre_render function Allow the style to do stuff before each row is rendered.
StylePluginBase::query public function Add anything to the query that we might need to. Overrides PluginBase::query 1
StylePluginBase::render_fields function Render all of the fields for a given style and store them on the object.
StylePluginBase::render_grouping function Group records as needed for rendering.
StylePluginBase::render_grouping_sets function Render the grouping sets.
StylePluginBase::tokenize_value function Take a value and apply token replacement logic to it.
StylePluginBase::usesFields function Return TRUE if this style also uses fields. 2
StylePluginBase::usesGrouping function Returns the usesGrouping property. 1
StylePluginBase::usesRowClass function Returns the usesRowClass property. 4
StylePluginBase::usesRowPlugin function Returns the usesRowPlugin property. 6
StylePluginBase::uses_tokens function Return TRUE if this style uses tokens.
StylePluginBase::validate public function Validate that the plugin is correct and can be saved. Overrides PluginBase::validate
StylePluginBase::validateOptionsForm public function Validate the options form. Overrides PluginBase::validateOptionsForm
StylePluginBase::wizard_form function Provide a form in the views wizard if this style is selected.
StylePluginBase::wizard_submit function Alter the options of a display before they are added to the view. 1