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class views_sort_expression_handler in Views Sort Expression 7

Generic views handler filter to add code to manipulate the query object.

Hierarchy

Expanded class hierarchy of views_sort_expression_handler

1 string reference to 'views_sort_expression_handler'
views_sort_expression_views_data_alter in views/views_sort_expression.views.inc
Alter the table and field information from hook_views_data().

File

views/views_sort_expression_handler.inc, line 13
Filter classes.

View source
class views_sort_expression_handler extends views_handler_sort {

  /**
   * {@inheritdoc}
   */
  public function option_definition() {
    $options = parent::option_definition();
    $options['expression'] = array(
      'default' => NULL,
    );
    $options['aggregate'] = array(
      'default' => NULL,
    );
    return $options;
  }

  /**
   * {@inheritdoc}
   */
  public function options_form(&$form, &$form_state) {
    parent::options_form($form, $form_state);
    $form['expression'] = array(
      '#type' => 'textarea',
      '#title' => t('Expression'),
      '#default_value' => $this->options['expression'],
      '#description' => t('<b>This is an advanced sort handler.</b> You can use whatever is available on the SQL. If what you need is not on the query, you could add other sort handlers in the end that will make some others to be available. You should probably want to enable "Show the SQL query" on the <a href="!url">settings</a> page.', array(
        '!url' => url('admin/structure/views/settings'),
      )),
    );
    $form['aggregate'] = array(
      '#type' => 'checkbox',
      '#title' => t('Expression has an aggregate function'),
      '#default_value' => $this->options['aggregate'],
      '#description' => t('This allows you to use an <a href="https://www.w3schools.com/sql/sql_groupby.asp">aggregate function</a> on the expression, instead of relying on the views aggregation plugins which doesn\'t otherwise work nicely with this sort handler.'),
    );
  }

  /**
   * {@inheritdoc}
   */
  public function use_group_by() {
    return FALSE;
  }

  /**
   * {@inheritdoc}
   */
  public function query() {
    if (!empty($this->options['expression'])) {
      $alias = $this->real_field . '_' . $this->position;
      $this->query
        ->add_orderby(NULL, $this->options['expression'], $this->options['order'], $alias);
    }
  }

}

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::accept_exposed_input public function Take input from exposed handlers and assign to this handler, if necessary. 1
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_form public function Render our chunk of the exposed handler form when selecting. 1
views_handler::exposed_info public function Get information about the exposed form for the form renderer. 1
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::expose_validate public function Validate the options form. 1
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::init public function Init the handler with necessary data. 6
views_handler::is_a_group public function Returns TRUE if the exposed filter works like a grouped filter. 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::multiple_exposed_input public function Define if the exposed input has to be submitted multiple times. This is TRUE when exposed filters grouped are using checkboxes as widgets. 1
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::store_exposed_input public function If set to remember exposed input in the session, store it there. 1
views_handler::ui_name public function Return a string representing this handler's name in the UI. 9
views_handler::validate public function Validates the handler against the complete View. 1
views_handler_sort::admin_summary public function Display whether or not the sort order is ascending or descending Overrides views_handler::admin_summary 1
views_handler_sort::can_expose public function Determine if a sort can be exposed. Overrides views_handler::can_expose 1
views_handler_sort::expose_form public function Form for exposed handler options. Overrides views_handler::expose_form
views_handler_sort::expose_options public function Provide default options for exposed sorts. Overrides views_handler::expose_options
views_handler_sort::options_submit public function Simple submit handler. Overrides views_handler::options_submit
views_handler_sort::options_validate public function Simple validate handler. Overrides views_handler::options_validate
views_handler_sort::show_expose_button public function Shortcut to display the expose/hide button. Overrides views_handler::show_expose_button
views_handler_sort::show_sort_form public function Shortcut to display the value form. 1
views_handler_sort::sort_options public function Provide a list of options for the default sort form.
views_handler_sort::sort_submit public function
views_handler_sort::sort_validate public function
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::construct public function Views handlers use a special construct function. 4
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
views_sort_expression_handler::options_form public function Basic options for all sort criteria Overrides views_handler_sort::options_form
views_sort_expression_handler::option_definition public function Information about options for all kinds of purposes will be held here. Overrides views_handler_sort::option_definition
views_sort_expression_handler::query public function Called to add the sort to a query. Overrides views_handler_sort::query
views_sort_expression_handler::use_group_by public function Provides the handler some groupby. Overrides views_handler::use_group_by