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<?php
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/**
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* @file
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* Definition of views_handler_argument_many_to_one.
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*/
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/**
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* An argument handler for use in fields that have a many to one relationship
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* with the table(s) to the left. This adds a bunch of options that are
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* reasonably common with this type of relationship.
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* Definition terms:
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* - numeric: If true, the field will be considered numeric. Probably should
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* always be set TRUE as views_handler_argument_string has many to one
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* capabilities.
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* - zero is null: If true, a 0 will be handled as empty, so for example
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* a default argument can be provided or a summary can be shown.
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*
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* @ingroup views_argument_handlers
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*/
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class views_handler_argument_many_to_one extends views_handler_argument {
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function init(&$view, &$options) {
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parent::init($view, $options);
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$this->helper = new views_many_to_one_helper($this);
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// Ensure defaults for these, during summaries and stuff:
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$this->operator = 'or';
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$this->value = array();
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}
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function option_definition() {
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$options = parent::option_definition();
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if (!empty($this->definition['numeric'])) {
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$options['break_phrase'] = array('default' => FALSE, 'bool' => TRUE);
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}
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$options['add_table'] = array('default' => FALSE, 'bool' => TRUE);
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$options['require_value'] = array('default' => FALSE, 'bool' => TRUE);
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if (isset($this->helper)) {
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$this->helper->option_definition($options);
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}
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else {
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$helper = new views_many_to_one_helper($this);
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$helper->option_definition($options);
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}
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return $options;
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}
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function options_form(&$form, &$form_state) {
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parent::options_form($form, $form_state);
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// allow + for or, , for and
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if (!empty($this->definition['numeric'])) {
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$form['break_phrase'] = array(
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'#type' => 'checkbox',
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'#title' => t('Allow multiple values'),
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'#description' => t('If selected, users can enter multiple values in the form of 1+2+3 (for OR) or 1,2,3 (for AND).'),
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'#default_value' => !empty($this->options['break_phrase']),
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'#fieldset' => 'more',
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);
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}
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$form['add_table'] = array(
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'#type' => 'checkbox',
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'#title' => t('Allow multiple filter values to work together'),
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'#description' => t('If selected, multiple instances of this filter can work together, as though multiple values were supplied to the same filter. This setting is not compatible with the "Reduce duplicates" setting.'),
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'#default_value' => !empty($this->options['add_table']),
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'#fieldset' => 'more',
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);
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$form['require_value'] = array(
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'#type' => 'checkbox',
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'#title' => t('Do not display items with no value in summary'),
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'#default_value' => !empty($this->options['require_value']),
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'#fieldset' => 'more',
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);
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$this->helper->options_form($form, $form_state);
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}
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/**
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* Override ensure_my_table so we can control how this joins in.
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* The operator actually has influence over joining.
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*/
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function ensure_my_table() {
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$this->helper->ensure_my_table();
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}
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function query($group_by = FALSE) {
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$empty = FALSE;
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if (isset($this->definition['zero is null']) && $this->definition['zero is null']) {
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if (empty($this->argument)) {
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$empty = TRUE;
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}
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}
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else {
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if (!isset($this->argument)) {
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$empty = TRUE;
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}
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}
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if ($empty) {
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parent::ensure_my_table();
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$this->query->add_where(0, "$this->table_alias.$this->real_field", NULL, 'IS NULL');
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return;
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}
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if (!empty($this->options['break_phrase'])) {
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views_break_phrase($this->argument, $this);
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}
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else {
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$this->value = array($this->argument);
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$this->operator = 'or';
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}
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$this->helper->add_filter();
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}
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function title() {
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if (!$this->argument) {
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return !empty($this->definition['empty field name']) ? $this->definition['empty field name'] : t('Uncategorized');
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}
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if (!empty($this->options['break_phrase'])) {
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views_break_phrase($this->argument, $this);
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}
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else {
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$this->value = array($this->argument);
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$this->operator = 'or';
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}
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// @todo -- both of these should check definition for alternate keywords.
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if (empty($this->value)) {
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return !empty($this->definition['empty field name']) ? $this->definition['empty field name'] : t('Uncategorized');
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}
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if ($this->value === array(-1)) {
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return !empty($this->definition['invalid input']) ? $this->definition['invalid input'] : t('Invalid input');
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}
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return implode($this->operator == 'or' ? ' + ' : ', ', $this->title_query());
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}
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function summary_query() {
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$field = $this->table . '.' . $this->field;
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$join = $this->get_join();
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if (!empty($this->options['require_value'])) {
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$join->type = 'INNER';
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}
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if (empty($this->options['add_table']) || empty($this->view->many_to_one_tables[$field])) {
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$this->table_alias = $this->query->ensure_table($this->table, $this->relationship, $join);
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}
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else {
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$this->table_alias = $this->helper->summary_join();
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}
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// Add the field.
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$this->base_alias = $this->query->add_field($this->table_alias, $this->real_field);
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$this->summary_name_field();
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return $this->summary_basics();
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}
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function summary_argument($data) {
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$value = $data->{$this->base_alias};
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if (empty($value)) {
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$value = 0;
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}
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return $value;
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}
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/**
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* Override for specific title lookups.
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*/
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function title_query() {
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return $this->value;
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}
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}
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