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class views_handler_filter_in_operator in Views (for Drupal 7) 7.3

Same name and namespace in other branches
  1. 6.3 handlers/views_handler_filter_in_operator.inc \views_handler_filter_in_operator
  2. 6.2 handlers/views_handler_filter_in_operator.inc \views_handler_filter_in_operator

Simple filter to handle matching of multiple options using checkboxes.

Definition items:

  • options callback: The function to call in order to generate the value options. If omitted, the options 'Yes' and 'No' will be used.
  • options arguments: An array of arguments to pass to the options callback.

Hierarchy

Expanded class hierarchy of views_handler_filter_in_operator

Related topics

Views filter handlers
Handlers to tell Views how to filter queries.
2 string references to 'views_handler_filter_in_operator'
ViewsHandlerFilterInOperator::viewsData in tests/handlers/views_handler_filter_in_operator.test
The views data definition.
ViewsUiBaseViewsWizard::default_display_filters_user in plugins/views_wizard/views_ui_base_views_wizard.class.php

File

handlers/views_handler_filter_in_operator.inc, line 18
Definition of views_handler_filter_in_operator.

View source 
class views_handler_filter_in_operator extends views_handler_filter {

  /**
   *
   */
  public $value_form_type = 'checkboxes';

  /**
   * @var array
   * Stores all operations which are available on the form.
   */
  public $value_options = NULL;

  /**
   * {@inheritdoc}
   */
  public function construct() {
    parent::construct();
    $this->value_title = t('Options');
    $this->value_options = NULL;
  }

  /**
   * Child classes should be used to override this function and set the
   * 'value options', unless 'options callback' is defined as a valid function
   * or static public method to generate these values.
   *
   * This can use a guard to be used to reduce database hits as much as
   * possible.
   *
   * @return
   *   Return the stored values in $this->value_options if someone expects it.
   */
  public function get_value_options() {
    if (isset($this->value_options)) {
      return;
    }
    if (isset($this->definition['options callback']) && is_callable($this->definition['options callback'])) {
      if (isset($this->definition['options arguments']) && is_array($this->definition['options arguments'])) {
        $this->value_options = call_user_func_array($this->definition['options callback'], $this->definition['options arguments']);
      }
      else {
        $this->value_options = call_user_func($this->definition['options callback']);
      }
    }
    else {
      $this->value_options = array(
        t('Yes'),
        t('No'),
      );
    }
    return $this->value_options;
  }

  /**
   * {@inheritdoc}
   */
  public function expose_options() {
    parent::expose_options();
    $this->options['expose']['reduce'] = FALSE;
  }

  /**
   * {@inheritdoc}
   */
  public function expose_form(&$form, &$form_state) {
    parent::expose_form($form, $form_state);
    $form['expose']['reduce'] = array(
      '#type' => 'checkbox',
      '#title' => t('Limit list to selected items'),
      '#description' => t('If checked, the only items presented to the user will be the ones selected here.'),
      // Safety.
      '#default_value' => !empty($this->options['expose']['reduce']),
    );
  }

  /**
   * {@inheritdoc}
   */
  public function option_definition() {
    $options = parent::option_definition();
    $options['operator']['default'] = 'in';
    $options['value']['default'] = array();
    $options['expose']['contains']['reduce'] = array(
      'default' => FALSE,
      'bool' => TRUE,
    );
    return $options;
  }

  /**
   * This kind of construct makes it relatively easy for a child class to add or
   * remove functionality by overriding this function and adding/removing items
   * from this array.
   */
  public function operators() {
    $operators = array(
      'in' => array(
        'title' => t('Is one of'),
        'short' => t('in'),
        'short_single' => t('='),
        'method' => 'op_simple',
        'values' => 1,
      ),
      'not in' => array(
        'title' => t('Is not one of'),
        'short' => t('not in'),
        'short_single' => t('<>'),
        'method' => 'op_simple',
        'values' => 1,
      ),
    );

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

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

  /**
   * {@inheritdoc}
   */
  public function operator_values($values = 1) {
    $options = array();
    foreach ($this
      ->operators() as $id => $info) {
      if (isset($info['values']) && $info['values'] == $values) {
        $options[] = $id;
      }
    }
    return $options;
  }

  /**
   * {@inheritdoc}
   */
  public function value_form(&$form, &$form_state) {
    $form['value'] = array();
    $options = array();
    if (empty($form_state['exposed'])) {

      // Add a select all option to the value form.
      $options = array(
        'all' => t('Select all'),
      );
    }
    $this
      ->get_value_options();
    $options += $this->value_options;
    $default_value = (array) $this->value;
    $which = 'all';
    if (!empty($form['operator'])) {
      $source = $form['operator']['#type'] == 'radios' ? 'radio:options[operator]' : 'edit-options-operator';
    }
    if (!empty($form_state['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
          ->operator_values(1)) ? 'value' : 'none';
      }
      else {
        $source = 'edit-' . drupal_html_id($this->options['expose']['operator_id']);
      }
      if (!empty($this->options['expose']['reduce'])) {
        $options = $this
          ->reduce_value_options();
        if (!empty($this->options['expose']['multiple']) && empty($this->options['expose']['required'])) {
          $default_value = array();
        }
      }
      if (empty($this->options['expose']['multiple'])) {
        if (empty($this->options['expose']['required']) && (empty($default_value) || !empty($this->options['expose']['reduce']))) {
          $default_value = 'All';
        }
        elseif (empty($default_value)) {
          $keys = array_keys($options);
          $default_value = array_shift($keys);
        }
        else {
          $copy = $default_value;
          $default_value = array_shift($copy);
        }
      }
    }
    if ($which == 'all' || $which == 'value') {
      $form['value'] = array(
        '#type' => $this->value_form_type,
        '#title' => $this->value_title,
        '#options' => $options,
        '#default_value' => $default_value,
        // These are only valid for 'select' type, but do no harm to checkboxes.
        '#multiple' => TRUE,
        '#size' => count($options) > 8 ? 8 : count($options),
      );
      if (!empty($form_state['exposed']) && !isset($form_state['input'][$identifier])) {
        $form_state['input'][$identifier] = $default_value;
      }
      if ($which == 'all') {
        if (empty($form_state['exposed']) && in_array($this->value_form_type, array(
          'checkbox',
          'checkboxes',
          'radios',
          'select',
        ))) {
          $form['value']['#prefix'] = '<div id="edit-options-value-wrapper">';
          $form['value']['#suffix'] = '</div>';
        }
        $form['value']['#dependency'] = array(
          $source => $this
            ->operator_values(1),
        );
      }
    }
  }

  /**
   * When using exposed filters, we may be required to reduce the set.
   */
  public function reduce_value_options($input = NULL) {
    if (!isset($input)) {
      $input = $this->value_options;
    }

    // Because options may be an array of strings, or an array of mixed arrays
    // and strings (optgroups) or an array of objects, we have to
    // step through and handle each one individually.
    $options = array();
    foreach ($input as $id => $option) {
      if (is_array($option)) {
        $options[$id] = $this
          ->reduce_value_options($option);
        continue;
      }
      elseif (is_object($option)) {
        $keys = array_keys($option->option);
        $key = array_shift($keys);
        if (isset($this->options['value'][$key])) {
          $options[$id] = $option;
        }
      }
      elseif (isset($this->options['value'][$id])) {
        $options[$id] = $option;
      }
    }
    return $options;
  }

  /**
   * {@inheritdoc}
   */
  public function accept_exposed_input($input) {

    // A very special override because the All state for this type of
    // filter could have a default.
    if (empty($this->options['exposed'])) {
      return TRUE;
    }

    // If this is non-multiple and non-required, then this filter will
    // participate, but using the default settings, *if* 'limit is true.
    if (empty($this->options['expose']['multiple']) && empty($this->options['expose']['required']) && !empty($this->options['expose']['limit'])) {
      $identifier = $this->options['expose']['identifier'];
      if ($input[$identifier] == 'All') {
        return TRUE;
      }
    }
    return parent::accept_exposed_input($input);
  }

  /**
   * {@inheritdoc}
   */
  public function value_submit($form, &$form_state) {

    // Drupal's FAPI system automatically puts '0' in for any checkbox that
    // was not set, and the key to the checkbox if it is set.
    // Unfortunately, this means that if the key to that checkbox is 0,
    // we are unable to tell if that checkbox was set or not.
    // Luckily, the '#value' on the checkboxes form actually contains
    // *only* a list of checkboxes that were set, and we can use that
    // instead.
    $form_state['values']['options']['value'] = $form['value']['#value'];
  }

  /**
   * {@inheritdoc}
   */
  public function admin_summary() {
    if ($this
      ->is_a_group()) {
      return t('grouped');
    }
    if (!empty($this->options['exposed'])) {
      return t('exposed');
    }
    $info = $this
      ->operators();
    $this
      ->get_value_options();
    if (!is_array($this->value)) {
      return;
    }
    $operator = check_plain($info[$this->operator]['short']);
    $values = '';
    if (in_array($this->operator, $this
      ->operator_values(1))) {

      // Remove every element which is not known.
      foreach ($this->value as $value) {
        if (!isset($this->value_options[$value])) {
          unset($this->value[$value]);
        }
      }

      // Choose different kind of ouput for 0, a single and multiple values.
      if (count($this->value) == 0) {
        $values = t('Unknown');
      }
      elseif (count($this->value) == 1) {

        // If any, use the 'single' short name of the operator instead.
        if (isset($info[$this->operator]['short_single'])) {
          $operator = check_plain($info[$this->operator]['short_single']);
        }
        $keys = $this->value;
        $value = array_shift($keys);
        if (isset($this->value_options[$value])) {
          $values = check_plain($this->value_options[$value]);
        }
        else {
          $values = '';
        }
      }
      else {
        foreach ($this->value as $value) {
          if ($values !== '') {
            $values .= ', ';
          }
          if (drupal_strlen($values) > 8) {
            $values .= '...';
            break;
          }
          if (isset($this->value_options[$value])) {
            $values .= check_plain($this->value_options[$value]);
          }
        }
      }
    }
    return $operator . ($values !== '' ? ' ' . $values : '');
  }

  /**
   * {@inheritdoc}
   */
  public function query() {
    $info = $this
      ->operators();
    if (!empty($info[$this->operator]['method'])) {
      $this
        ->{$info[$this->operator]['method']}();
    }
  }

  /**
   * {@inheritdoc}
   */
  public function op_simple() {
    if (empty($this->value)) {
      return;
    }
    $this
      ->ensure_my_table();

    // We use array_values() because the checkboxes keep keys and that can cause
    // array addition problems.
    $this->query
      ->add_where($this->options['group'], "{$this->table_alias}.{$this->real_field}", array_values($this->value), $this->operator);
  }

  /**
   * {@inheritdoc}
   */
  public function op_empty() {
    $this
      ->ensure_my_table();
    if ($this->operator == 'empty') {
      $operator = "IS NULL";
    }
    else {
      $operator = "IS NOT NULL";
    }
    $this->query
      ->add_where($this->options['group'], "{$this->table_alias}.{$this->real_field}", NULL, $operator);
  }

  /**
   * {@inheritdoc}
   */
  public function validate() {
    $this
      ->get_value_options();
    $errors = array();

    // If the operator is an operator which doesn't require a value, there is
    // no need for additional validation.
    if (in_array($this->operator, $this
      ->operator_values(0))) {
      return array();
    }
    if (!in_array($this->operator, $this
      ->operator_values(1))) {
      $errors[] = t('The operator is invalid on filter: @filter.', array(
        '@filter' => $this
          ->ui_name(TRUE),
      ));
    }
    if (is_array($this->value)) {
      if (!isset($this->value_options)) {

        // Don't validate if there are none value options provided, for example
        // for special handlers.
        return $errors;
      }
      if ($this->options['exposed'] && !$this->options['expose']['required'] && empty($this->value)) {

        // Don't validate if the field is exposed and no default value is
        // provided.
        return $errors;
      }

      // Some filter_in_operator usage uses optgroups forms, so flatten it.
      $flat_options = form_options_flatten($this->value_options, TRUE);

      // Remove every element which is not known.
      foreach ($this->value as $value) {
        if (!isset($flat_options[$value])) {
          unset($this->value[$value]);
        }
      }

      // Choose different kind of ouput for 0, a single and multiple values.
      if (count($this->value) == 0) {
        $errors[] = t('No valid values found on filter: @filter.', array(
          '@filter' => $this
            ->ui_name(TRUE),
        ));
      }
    }
    elseif (!empty($this->value) && ($this->operator == 'in' || $this->operator == 'not in')) {
      $errors[] = t('The value @value is not an array for @operator on filter: @filter', array(
        '@value' => views_var_export($this->value),
        '@operator' => $this->operator,
        '@filter' => $this
          ->ui_name(TRUE),
      ));
    }
    return $errors;
  }

}

Members

Namesort descending Modifiers Type Description Overrides
views_handler::$handler_type public property The type of the handler, for example filter/footer/field.
views_handler::$query public property Where the $query object will reside:. 1
views_handler::$real_field public property The actual field in the database table, maybe different on other kind of query plugins/special handlers.
views_handler::$relationship public property The relationship used for this field.
views_handler::$table_alias public property The alias of the table of this handler which is used in the query.
views_handler::$view public property The top object of a view. Overrides views_object::$view
views_handler::access public function Check whether current user has access to this handler. 10
views_handler::broken public function Determine if the handler is considered 'broken'. 6
views_handler::case_transform public function Transform a string by a certain method.
views_handler::ensure_my_table public function Ensure the main table for this handler is in the query. This is used a lot. 8
views_handler::exposed_submit public function Submit the exposed handler form.
views_handler::exposed_validate public function Validate the exposed handler form. 4
views_handler::expose_submit public function Perform any necessary changes to the form exposes prior to storage. There is no need for this function to actually store the data.
views_handler::extra_options public function Provide defaults for the handler.
views_handler::extra_options_form public function Provide a form for setting options. 1
views_handler::extra_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.
views_handler::extra_options_validate public function Validate the options form.
views_handler::get_field public function Shortcut to get a handler's raw field value.
views_handler::get_join public function Get the join object that should be used for this handler.
views_handler::groupby_form public function Provide a form for aggregation settings. 1
views_handler::groupby_form_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. 1
views_handler::has_extra_options public function If a handler has 'extra options' it will get a little settings widget and another form called extra_options. 1
views_handler::is_exposed public function Determine if this item is 'exposed', meaning it provides form elements to let users modify the view.
views_handler::needs_style_plugin public function Determine if the argument needs a style plugin. 1
views_handler::placeholder public function Provides a unique placeholders for handlers.
views_handler::post_execute public function Run after the view is executed, before the result is cached. 1
views_handler::pre_query public function Run before the view is built. 1
views_handler::sanitize_value public function Sanitize the value for output.
views_handler::set_relationship public function Called just prior to query(), this lets a handler set up any relationship it needs.
views_handler::show_expose_form public function Shortcut to display the exposed options form.
views_handler::ui_name public function Return a string representing this handler's name in the UI. 9
views_handler::use_group_by public function Provides the handler some groupby. 2
views_handler_filter::$always_multiple public property Disable the possibility to force a single value. 6
views_handler_filter::$always_required public property Disable the possibility to allow a exposed input to be optional.
views_handler_filter::$group_info public property Contains the information of the selected item in a gruped filter.
views_handler_filter::$no_operator public property Disable the possibility to use operators. 2
views_handler_filter::$operator public property Contains the operator which is used on the query.
views_handler_filter::$value public property Contains the actual value of the field.
views_handler_filter::build_group_form public function Build the form to let users create the group of exposed filters.
views_handler_filter::build_group_options public function Provide default options for exposed filters.
views_handler_filter::build_group_submit public function Save new group items, re-enumerates and remove groups marked to delete.
views_handler_filter::build_group_validate public function Validate the build group options form. 1
views_handler_filter::can_build_group public function Determine if a filter can be converted into a group.
views_handler_filter::can_expose public function Determine if a filter can be exposed. Overrides views_handler::can_expose 5
views_handler_filter::can_group public function Can this filter be used in OR groups? 1
views_handler_filter::convert_exposed_input public function Transform the input from a grouped filter into a standard filter.
views_handler_filter::exposed_form public function Render our chunk of the exposed filter form when selecting. Overrides views_handler::exposed_form
views_handler_filter::exposed_info public function Tell the renderer about our exposed form. Overrides views_handler::exposed_info
views_handler_filter::exposed_translate public function Make some translations to a form item to make it more suitable to exposing.
views_handler_filter::expose_validate public function Validate the options form. Overrides views_handler::expose_validate
views_handler_filter::group_form public function Build a form with a group of operator | values to apply as a single filter.
views_handler_filter::group_multiple_exposed_input public function Options available for a grouped filter which uses checkboxes.
views_handler_filter::init public function Provide some extra help to get the operator/value easier to use. Overrides views_handler::init 2
views_handler_filter::is_a_group public function Returns TRUE if the exposed filter works like a grouped filter. Overrides views_handler::is_a_group
views_handler_filter::multiple_exposed_input public function Indicate whether users can select multiple group items. Overrides views_handler::multiple_exposed_input
views_handler_filter::operator_form public function Options form subform for setting the operator. 6
views_handler_filter::operator_submit public function Perform any necessary changes to the form values prior to storage.
views_handler_filter::operator_validate public function Validate the operator form.
views_handler_filter::options_form public function Provide the basic form which calls through to subforms. Overrides views_handler::options_form 4
views_handler_filter::options_submit public function Simple submit handler. Overrides views_handler::options_submit
views_handler_filter::options_validate public function Simple validate handler. Overrides views_handler::options_validate 1
views_handler_filter::prepare_filter_select_options public function Sanitizes the HTML select element's options.
views_handler_filter::show_build_group_button public function Shortcut to display the build_group/hide button.
views_handler_filter::show_build_group_form public function Shortcut to display the exposed options form.
views_handler_filter::show_expose_button public function Shortcut to display the expose/hide button. Overrides views_handler::show_expose_button
views_handler_filter::show_operator_form public function Shortcut to display the operator form.
views_handler_filter::show_value_form public function Shortcut to display the value form.
views_handler_filter::store_exposed_input public function Store the exposed input for processing later. Overrides views_handler::store_exposed_input
views_handler_filter::store_group_input public function If set to remember exposed input in the session, store it there.
views_handler_filter::value_validate public function Validate the options form. 3
views_handler_filter_in_operator::$value_form_type public property 1
views_handler_filter_in_operator::$value_options public property Stores all operations which are available on the form.
views_handler_filter_in_operator::accept_exposed_input public function Check to see if input from the exposed filters should change the behavior. Overrides views_handler_filter::accept_exposed_input 2
views_handler_filter_in_operator::admin_summary public function Display the filter on the administrative summary. Overrides views_handler_filter::admin_summary 2
views_handler_filter_in_operator::construct public function Views handlers use a special construct function. Overrides views_object::construct
views_handler_filter_in_operator::expose_form public function Options form subform for exposed filter options. Overrides views_handler_filter::expose_form 1
views_handler_filter_in_operator::expose_options public function Provide default options for exposed filters. Overrides views_handler_filter::expose_options
views_handler_filter_in_operator::get_value_options public function Child classes should be used to override this function and set the 'value options', unless 'options callback' is defined as a valid function or static public method to generate these values. 18
views_handler_filter_in_operator::operators public function This kind of construct makes it relatively easy for a child class to add or remove functionality by overriding this function and adding/removing items from this array. 1
views_handler_filter_in_operator::operator_options public function Build strings from the operators() for 'select' options. Overrides views_handler_filter::operator_options 2
views_handler_filter_in_operator::operator_values public function
views_handler_filter_in_operator::option_definition public function Information about options for all kinds of purposes will be held here. Overrides views_handler_filter::option_definition 1
views_handler_filter_in_operator::op_empty public function
views_handler_filter_in_operator::op_simple public function
views_handler_filter_in_operator::query public function Add this filter to the query. Overrides views_handler_filter::query 5
views_handler_filter_in_operator::reduce_value_options public function When using exposed filters, we may be required to reduce the set.
views_handler_filter_in_operator::validate public function Validates the handler against the complete View. Overrides views_handler::validate
views_handler_filter_in_operator::value_form public function Options form subform for setting options. Overrides views_handler_filter::value_form 2
views_handler_filter_in_operator::value_submit public function Perform any necessary changes to the form values prior to storage. Overrides views_handler_filter::value_submit 2
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::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