You are here

Home » API reference » Views Calc 7 » views_calc_field_handler.inc

class views_calc_field_handler in Views Calc 7

Same name and namespace in other branches
  1. 6.3 views_calc_field_handler.inc \views_calc_field_handler
  2. 6 views_calc_field_handler.inc \views_calc_field_handler

Field handler to provide simple renderer that allows linking to a node.

Hierarchy

Expanded class hierarchy of views_calc_field_handler

1 string reference to 'views_calc_field_handler'
views_calc_views_data in ./views_calc.views.inc
Implements hook_views_data().

File

./views_calc_field_handler.inc, line 10
Copied from the basic 'node' field handler.

View source 
class views_calc_field_handler extends views_handler_field {

  /**
   * Constructor to provide additional field to add.
   */
  function construct() {
    parent::construct();
    $this->additional_fields['nid'] = 'nid';
  }
  function option_definition() {
    $options = parent::option_definition();
    $options['link_to_node'] = array(
      'default' => FALSE,
    );
    return $options;
  }

  /**
   * Provide link to node option
   */
  function options_form(&$form, &$form_state) {
    parent::options_form($form, $form_state);
    $form['link_to_node'] = array(
      '#title' => t('Link this field to its node'),
      '#type' => 'checkbox',
      '#default_value' => !empty($this->options['link_to_node']),
    );
  }

  /**
   * Render whatever the data is as a link to the node.
   *
   * Data should be made XSS safe prior to calling this function.
   */
  function render_link($data, $values) {
    if (!empty($this->options['link_to_node'])) {
      return l($data, "node/" . $values->{$this->aliases['nid']}, array(
        'html' => TRUE,
      ));
    }
    else {
      return $data;
    }
  }

  /**
   * Find the right calculation and add it to the query as
   * an aliased field.
   */
  function query() {
    $results = _views_calc_fields();
    foreach ($results as $calc_field) {
      if ($this->definition['cid'] == $calc_field->cid) {

        // Ensure that the expected tables and fields have been joined in.
        foreach (explode(',', $calc_field->fieldlist) as $field) {
          $parts = explode('.', $field);

          //$this->view->query->add_field($parts[0], $parts[1]);
          $this->view->query
            ->add_table($parts[0]);
        }
        $this->view->query
          ->add_field(NULL, "({$calc_field->calc})", "cid" . $calc_field->cid);
      }
    }
  }
  function pre_query() {
    $this->field_alias = "cid{$this->definition['cid']}";
    parent::pre_query();
  }

  /**
   * Use the requested format function to render the raw alias value.
   */
  function render($values) {
    $field_alias = "cid{$this->definition['cid']}";
    $value = $values->{$field_alias};
    $formats = _views_calc_format_options();
    $format = $formats[$this->definition['format']];
    $tmp = explode(':', $format);
    $function = trim($tmp[0]);
    $vars = count($tmp) == 2 ? $tmp[1] : '';
    if ($function == 'custom') {
      $tmp = explode(':', $this->definition['custom']);
      $function = trim($tmp[0]);
      $vars = count($tmp) == 2 ? $tmp[1] : '';
    }
    if (empty($function) || $function == 'none') {
      $function = 'check_plain';
    }
    $raw = $function($value, $vars);

    // This needs to be set for the $this->render_link() to work. It would
    // have been set in the query, if we hadn't bypassed the normal query.
    // TODO there may be a better way to do this.
    $this->aliases['nid'] = 'nid';
    return $this
      ->render_link($raw, $values);
  }

}

Members

Namesort descending Modifiers Type Description Overrides
views_calc_field_handler::construct function Constructor to provide additional field to add. Overrides views_handler_field::construct
views_calc_field_handler::options_form function Provide link to node option Overrides views_handler_field::options_form
views_calc_field_handler::option_definition function Information about options for all kinds of purposes will be held here. Overrides views_handler_field::option_definition
views_calc_field_handler::pre_query function Run before the view is built. Overrides views_handler::pre_query
views_calc_field_handler::query function Find the right calculation and add it to the query as an aliased field. Overrides views_handler_field::query
views_calc_field_handler::render function Use the requested format function to render the raw alias value. Overrides views_handler_field::render
views_calc_field_handler::render_link function Render whatever the data is as a link to the node.
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::can_expose public function Determine if a handler can be exposed. 2
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_form public function Form for exposed handler options. 2
views_handler::expose_options public function Set new exposed option defaults when exposed setting is flipped on. 2
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::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::options_validate public function Validate the options form. 4
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::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_button public function Shortcut to display the expose/hide button. 2
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::use_group_by public function Provides the handler some groupby. 2
views_handler::validate public function Validates the handler against the complete View. 1
views_handler_field::$additional_fields public property Stores additional fields which get added to the query. The generated aliases are stored in $aliases.
views_handler_field::$aliases public property
views_handler_field::$field_alias public property
views_handler_field::$last_render_index protected property Keeps track of the last render index.
views_handler_field::$original_value public property The field value prior to any rewriting.
views_handler_field::add_additional_fields public function Add 'additional' fields to the query.
views_handler_field::add_self_tokens public function Add any special tokens this field might use for itself. 4
views_handler_field::admin_summary public function Provide extra data to the administration form Overrides views_handler::admin_summary
views_handler_field::advanced_render public function Render a field using advanced settings.
views_handler_field::allow_advanced_render public function Determine if this field can allow advanced rendering. 1
views_handler_field::click_sort public function Called to determine what to tell the clicksorter. 1
views_handler_field::click_sortable public function Determine if this field is click sortable. 1
views_handler_field::document_self_tokens public function Document any special tokens this field might use for itself. 4
views_handler_field::element_classes public function Return the class of the field.
views_handler_field::element_label_classes public function Return the class of the field's label.
views_handler_field::element_label_type public function Return an HTML element for the label based upon the field's element type.
views_handler_field::element_type public function Return an HTML element based upon the field's element type. 2
views_handler_field::element_wrapper_classes public function Return the class of the field's wrapper.
views_handler_field::element_wrapper_type public function Return an HTML element for the wrapper based upon the field's element type.
views_handler_field::get_elements public function Provide a list of elements valid for field HTML.
views_handler_field::get_render_tokens public function Get the 'render' tokens to use for advanced rendering.
views_handler_field::get_token_values_recursive public function Recursive function to add replacements for nested query string parameters.
views_handler_field::get_value public function Get the value that's supposed to be rendered. 3
views_handler_field::init public function Init the handler with necessary data. Overrides views_handler::init 11
views_handler_field::is_value_empty public function Checks if a field value is empty.
views_handler_field::label public function Get this field's label.
views_handler_field::options_submit public function Performs some cleanup tasks on the options array before saving it. Overrides views_handler::options_submit 1
views_handler_field::pre_render public function Run before any fields are rendered. 8
views_handler_field::render_altered public function Render this field as altered text, from a fieldset set by the user.
views_handler_field::render_as_link public function Render this field as a link, with info from a fieldset set by the user.
views_handler_field::render_text public function Perform an advanced text render for the item.
views_handler_field::render_trim_text public function Trim the field down to the specified length.
views_handler_field::theme public function Call out to the theme() function.
views_handler_field::theme_functions public function Build a list of suitable theme functions for this view.
views_handler_field::tokenize_value public function Replace a value with tokens from the last field.
views_handler_field::ui_name public function Return a string representing this handler's name in the UI. Overrides views_handler::ui_name 1
views_handler_field::use_string_group_by public function Determines if this field will be available as an option to group the result by in the style settings.
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