Club Drupal

<?php

/**

 * @file

 * Contains the 'taxonomy term' argument validator plugin.

 */

/**

 * Validate whether an argument is an acceptable node.

 */

class views_plugin_argument_validate_taxonomy_term extends views_plugin_argument_validate {

  function init(&$view, &$argument, $options) {

    parent::init($view, $argument, $options);

    // Convert legacy vids option to machine name vocabularies.

    if (!empty($this->options['vids'])) {

      $vocabularies = taxonomy_get_vocabularies();

      foreach ($this->options['vids'] as $vid) {

        if (isset($vocabularies[$vid], $vocabularies[$vid]->machine_name)) {

          $this->options['vocabularies'][$vocabularies[$vid]->machine_name] = $vocabularies[$vid]->machine_name;

        }

      }

    }

  }

  function option_definition() {

    $options = parent::option_definition();

    $options['vocabularies'] = array('default' => array());

    $options['type'] = array('default' => 'tid');

    $options['transform'] = array('default' => FALSE, 'bool' => TRUE);

    return $options;

  }

  function options_form(&$form, &$form_state) {

    $vocabularies = taxonomy_get_vocabularies();

    $options = array();

    foreach ($vocabularies as $voc) {

      $options[$voc->machine_name] = check_plain($voc->name);

    }

    $form['vocabularies'] = array(

      '#type' => 'checkboxes',

      '#prefix' => '<div id="edit-options-validate-argument-vocabulary-wrapper">',

      '#suffix' => '</div>',

      '#title' => t('Vocabularies'),

      '#options' => $options,

      '#default_value' => $this->options['vocabularies'],

      '#description' => t('If you wish to validate for specific vocabularies, check them; if none are checked, all terms will pass.'),

    );

    $form['type'] = array(

      '#type' => 'select',

      '#title' => t('Filter value type'),

      '#options' => array(

        'tid' => t('Term ID'),

        'tids' => t('Term IDs separated by , or +'),

        'name' => t('Term name'),

        'convert' => t('Term name converted to Term ID'),

      ),

      '#default_value' => $this->options['type'],

      '#description' => t('Select the form of this filter value; if using term name, it is generally more efficient to convert it to a term ID and use Taxonomy: Term ID rather than Taxonomy: Term Name" as the filter.'),

    );

    $form['transform'] = array(

      '#type' => 'checkbox',

      '#title' => t('Transform dashes in URL to spaces in term name filter values'),

      '#default_value' => $this->options['transform'],

    );

  }

  function options_submit(&$form, &$form_state, &$options = array()) {

    // Filter unselected items so we don't unnecessarily store giant arrays.

    $options['vocabularies'] = array_filter($options['vocabularies']);

  }

  function convert_options(&$options) {

    if (!isset($options['vocabularies']) && !empty($this->argument->options['validate_argument_vocabulary'])) {

      $options['vocabularies'] = $this->argument->options['validate_argument_vocabulary'];

      $options['type'] = $this->argument->options['validate_argument_type'];

      $options['transform'] = isset($this->argument->options['validate_argument_transform']) ? $this->argument->options['validate_argument_transform'] : FALSE;

    }

  }

  function validate_argument($argument) {

    $vocabularies = array_filter($this->options['vocabularies']);

    $type = $this->options['type'];

    $transform = $this->options['transform'];

    switch ($type) {

      case 'tid':

        if (!is_numeric($argument)) {

          return FALSE;

        }

        $query = db_select('taxonomy_term_data', 'td');

        $query->leftJoin('taxonomy_vocabulary', 'tv', 'td.vid = tv.vid');

        $query->fields('td');

        $query->condition('td.tid', $argument);

        $query->addTag('term_access');

        $term = $query->execute()->fetchObject();

        if (!$term) {

          return FALSE;

        }

        $term = taxonomy_term_load($term->tid);

        $this->argument->validated_title = check_plain(entity_label('taxonomy_term', $term));

        return empty($vocabularies) || !empty($vocabularies[$term->vocabulary_machine_name]);

      case 'tids':

        // An empty argument is not a term so doesn't pass.

        if (empty($argument)) {

          return FALSE;

        }

        $tids = new stdClass();

        $tids->value = $argument;

        $tids = views_break_phrase($argument, $tids);

        if ($tids->value == array(-1)) {

          return FALSE;

        }

        $test = drupal_map_assoc($tids->value);

        $titles = array();

        // check, if some tids already verified

        static $validated_cache = array();

        foreach ($test as $tid) {

          if (isset($validated_cache[$tid])) {

            if ($validated_cache[$tid] === FALSE) {

              return FALSE;

            }

            else {

              $titles[] = $validated_cache[$tid];

              unset($test[$tid]);

            }

          }

        }

        // if unverified tids left - verify them and cache results

        if (count($test)) {

          $query = db_select('taxonomy_term_data', 'td');

          $query->addTag('term_access');

          $query->leftJoin('taxonomy_vocabulary', 'tv', 'td.vid = tv.vid');

          $query->fields('td');

          $query->fields('tv', array('machine_name'));

          $query->condition('td.tid', $test);

          $result = $query->execute();

          foreach ($result as $term) {

            if ($vocabularies && empty($vocabularies[$term->machine_name])) {

              $validated_cache[$term->tid] = FALSE;

              return FALSE;

            }

            $term = taxonomy_term_load($term->tid);

            $titles[] = $validated_cache[$term->tid] = check_plain(entity_label('taxonomy_term', $term));

            unset($test[$term->tid]);

          }

        }

        // Remove duplicate titles

        $titles = array_unique($titles);

        $this->argument->validated_title = implode($tids->operator == 'or' ? ' + ' : ', ', $titles);

        // If this is not empty, we did not find a tid.

        return empty($test);

      case 'name':

      case 'convert':

        $query = db_select('taxonomy_term_data', 'td');

        $query->addTag('term_access');

        $query->leftJoin('taxonomy_vocabulary', 'tv', 'td.vid = tv.vid');

        $query->fields('td');

        $query->fields('tv', array('machine_name'));

        if (!empty($vocabularies)) {

          $query->condition('tv.machine_name', $vocabularies);

        }

        if ($transform) {

          $query->where("replace(td.name, ' ', '-') = :name", array(':name' => $argument));

        }

        else {

          $query->condition('td.name', $argument);

        }

        $term = $query->execute()->fetchObject();

        if ($term && (empty($vocabularies) || !empty($vocabularies[$term->machine_name]))) {

          if ($type == 'convert') {

            $this->argument->argument = $term->tid;

          }

          $term = taxonomy_term_load($term->tid);

          $this->argument->validated_title = check_plain(entity_label('taxonomy_term', $term));

          return TRUE;

        }

        return FALSE;

    }

  }

  function process_summary_arguments(&$args) {

    $type = $this->options['type'];

    $transform = $this->options['transform'];

    $vocabularies = array_filter($this->options['vocabularies']);

    if ($type == 'convert') {

      $arg_keys = array_flip($args);

      $query = db_select('taxonomy_term_data', 'td');

      $query->addTag('term_access');

      $query->condition('tid', $args);

      $query->addField('td', 'tid', 'tid');

      if (!empty($vocabularies)) {

        $query->leftJoin('taxonomy_vocabulary', 'tv', 'td.vid = tv.vid');

        $query->condition('tv.machine_name', $vocabularies);

      }

      if ($transform) {

        $query->addExpression("REPLACE(td.name, ' ', '-')", 'name');

      }

      else {

        $query->addField('td', 'name', 'name');

      }

      foreach ($query->execute()->fetchAllKeyed() as $tid => $term) {

        $args[$arg_keys[$tid]] = $term;

      }

    }

  }

}