ElasticsearchViewsStringFilter.php in Elasticsearch Connector 8.5

Namespace

Drupal\elasticsearch_connector_views\Plugin\views\filter

File

modules/elasticsearch_connector_views/src/Plugin/views/filter/ElasticsearchViewsStringFilter.php

<?php

namespace Drupal\elasticsearch_connector_views\Plugin\views\filter;

use Drupal\Core\Form\FormStateInterface;
use Drupal\views\Plugin\views\filter\FilterPluginBase;

/**
 * Basic textfield filter to handle string filtering commands
 * including equality, like, not like, etc.
 *
 * @ingroup views_filter_handlers
 *
 * @ViewsFilter("elasticsearch_connector_views_string")
 */
class ElasticsearchViewsStringFilter extends FilterPluginBase {

  /**
   * Provide a simple textfield for equality
   */
  protected function valueForm(&$form, FormStateInterface $form_state) {

    // We have to make some choices when creating this as an exposed
    // filter form. For example, if the operator is locked and thus
    // not rendered, we can't render dependencies; instead we only
    // render the form items we need.
    $which = 'all';
    if (!empty($form['operator'])) {
      $source = ':input[name="options[operator]"]';
    }
    if ($exposed = $form_state
      ->get('exposed')) {
      $identifier = $this->options['expose']['identifier'];
      if (empty($this->options['expose']['use_operator']) || empty($this->options['expose']['operator_id'])) {

        // Exposed and locked.
        $which = in_array($this->operator, $this
          ->operatorValues(1)) ? 'value' : 'none';
      }
      else {
        $source = ':input[name="' . $this->options['expose']['operator_id'] . '"]';
      }
    }
    if ($which == 'all' || $which == 'value') {
      $form['value'] = array(
        '#type' => 'textfield',
        '#title' => $this
          ->t('Value'),
        '#size' => 30,
        '#default_value' => $this->value,
      );
      $user_input = $form_state
        ->getUserInput();
      if ($exposed && !isset($user_input[$identifier])) {
        $user_input[$identifier] = $this->value;
        $form_state
          ->setUserInput($user_input);
      }
      if ($which == 'all') {

        // Setup #states for all operators with one value.
        foreach ($this
          ->operatorValues(1) as $operator) {
          $form['value']['#states']['visible'][] = array(
            $source => array(
              'value' => $operator,
            ),
          );
        }
      }
    }
    if (!isset($form['value'])) {

      // Ensure there is something in the 'value'.
      $form['value'] = array(
        '#type' => 'value',
        '#value' => NULL,
      );
    }
  }

  /**
   * Helper function to define Options.
   */
  protected function defineOptions() {
    $options = parent::defineOptions();
    $options['expose']['contains']['required'] = array(
      'default' => FALSE,
    );
    return $options;
  }

  /**
   * Helper function to build Admin Summary.
   */
  public function adminSummary() {
    if ($this
      ->isAGroup()) {
      return $this
        ->t('grouped');
    }
    if (!empty($this->options['exposed'])) {
      return $this
        ->t('exposed');
    }
    $options = $this
      ->operatorOptions('short');
    $output = '';
    if (!empty($options[$this->operator])) {
      $output = $options[$this->operator];
    }
    if (in_array($this->operator, $this
      ->operatorValues(1))) {
      $output .= ' ' . $this->value;
    }
    return $output;
  }

  /**
   * Helper function to build operator values.
   */
  protected function operatorValues($values = 1) {
    $options = array();
    foreach ($this
      ->operators() as $id => $info) {
      if (isset($info['values']) && $info['values'] == $values) {
        $options[] = $id;
      }
    }
    return $options;
  }

  /**
   * Build strings from the operators() for 'select' options
   */
  public function operatorOptions($which = 'title') {
    $options = array();
    foreach ($this
      ->operators() as $id => $info) {
      $options[$id] = $info[$which];
    }
    return $options;
  }

  /**
   * Helper function to define opertators.
   */
  public function operators() {
    $operators = array(
      '=' => array(
        'title' => $this
          ->t('Is equal to'),
        'short' => $this
          ->t('='),
        'method' => 'opEqual',
        'values' => 1,
      ),
      '!=' => array(
        'title' => $this
          ->t('Is not equal to'),
        'short' => $this
          ->t('!='),
        'method' => 'opEqual',
        'values' => 1,
      ),
      'word' => array(
        'title' => $this
          ->t('Contains any word'),
        'short' => $this
          ->t('has word'),
        'method' => 'opContainsWord',
        'values' => 1,
      ),
      'allwords' => array(
        'title' => $this
          ->t('Contains all words'),
        'short' => $this
          ->t('has all'),
        'method' => 'opContainsWord',
        'values' => 1,
      ),
      'starts' => array(
        'title' => $this
          ->t('Starts with'),
        'short' => $this
          ->t('begins'),
        'method' => 'opStartsWith',
        'values' => 1,
      ),
    );

    // If the definition allows for the empty operator, add it.
    if (!empty($this->definition['allow empty'])) {
      $operators += array(
        'empty' => array(
          'title' => $this
            ->t('Is empty (NULL)'),
          'method' => 'opEmpty',
          'short' => $this
            ->t('empty'),
          'values' => 0,
        ),
        'not empty' => array(
          'title' => $this
            ->t('Is not empty (NOT NULL)'),
          'method' => 'opEmpty',
          'short' => $this
            ->t('not empty'),
          'values' => 0,
        ),
      );
    }
    return $operators;
  }

  /**
   * Helper function to query.
   */
  public function query() {
    if (!empty($this->value[0])) {
      $this->query->where['conditions'][$this->realField] = $this->value[0];
    }
  }

}

Classes

Name	Description
ElasticsearchViewsStringFilter	Basic textfield filter to handle string filtering commands including equality, like, not like, etc.