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				|  |  | +<?php
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				|  |  | +
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				|  |  | +/**
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				|  |  | + * @file
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				|  |  | + * Contains the basic 'entity' field handler.
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				|  |  | + */
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				|  |  | +
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				|  |  | +/**
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				|  |  | + * Field handler to provide simple renderer that allows linking to a entity.
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				|  |  | + * Definition terms:
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				|  |  | + * - link_to_entity default: Should this field have the checkbox "link to entity" enabled by default.
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				|  |  | + *
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				|  |  | + * @ingroup views_field_handlers
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				|  |  | + */
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				|  |  | +class tripal_views_handler_field_entity extends views_handler_field {
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				|  |  | +
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				|  |  | +  function init(&$view, &$options) {
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				|  |  | +    parent::init($view, $options);
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				|  |  | +    // Don't add the additional fields to groupby
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				|  |  | +    if (!empty($this->options['link_to_entity'])) {
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				|  |  | +      $this->additional_fields['id'] = array('table' => 'tripal_entity', 'field' => 'id');
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				|  |  | +      if (module_exists('translation')) {
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				|  |  | +        $this->additional_fields['language'] = array('table' => 'entity', 'field' => 'language');
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				|  |  | +      }
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				|  |  | +    }
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				|  |  | +  }
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				|  |  | +
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				|  |  | +  function option_definition() {
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				|  |  | +    $options = parent::option_definition();
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				|  |  | +    $options['link_to_entity'] = array('default' => isset($this->definition['link_to_entity default']) ? $this->definition['link_to_entity default'] : FALSE, 'bool' => TRUE);
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				|  |  | +    return $options;
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				|  |  | +  }
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				|  |  | +
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				|  |  | +  /**
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				|  |  | +   * Provide link to entity option
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				|  |  | +   */
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				|  |  | +  function options_form(&$form, &$form_state) {
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				|  |  | +    $form['link_to_entity'] = array(
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				|  |  | +      '#title' => t('Link this field to the original piece of content'),
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				|  |  | +      '#description' => t("Enable to override this field's links."),
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				|  |  | +      '#type' => 'checkbox',
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				|  |  | +      '#default_value' => !empty($this->options['link_to_entity']),
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				|  |  | +    );
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				|  |  | +
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				|  |  | +    parent::options_form($form, $form_state);
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				|  |  | +  }
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				|  |  | +
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				|  |  | +  /**
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				|  |  | +   * Render whatever the data is as a link to the entity.
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				|  |  | +   *
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				|  |  | +   * Data should be made XSS safe prior to calling this function.
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				|  |  | +   */
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				|  |  | +  function render_link($data, $values) {
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				|  |  | +    if (!empty($this->options['link_to_entity']) && !empty($this->additional_fields['id'])) {
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				|  |  | +      if ($data !== NULL && $data !== '') {
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				|  |  | +        $this->options['alter']['make_link'] = TRUE;
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				|  |  | +        $this->options['alter']['path'] = "bio_data/" . $this->get_value($values, 'id');
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				|  |  | +        if (isset($this->aliases['language'])) {
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				|  |  | +          $languages = language_list();
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				|  |  | +          $language = $this->get_value($values, 'language');
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				|  |  | +          if (isset($languages[$language])) {
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				|  |  | +            $this->options['alter']['language'] = $languages[$language];
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				|  |  | +          }
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				|  |  | +          else {
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				|  |  | +            unset($this->options['alter']['language']);
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				|  |  | +          }
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				|  |  | +        }
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				|  |  | +      }
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				|  |  | +      else {
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				|  |  | +        $this->options['alter']['make_link'] = FALSE;
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				|  |  | +      }
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				|  |  | +    }
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				|  |  | +    return $data;
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				|  |  | +  }
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				|  |  | +
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				|  |  | +  function render($values) {
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				|  |  | +    $value = $this->get_value($values);
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				|  |  | +    return $this->render_link($this->sanitize_value($value), $values);
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				|  |  | +  }
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				|  |  | +}
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