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<?php
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/**
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* @file
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* Definition of views_handler_relationship_entity_reverse.
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*/
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/**
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* A relationship handlers which reverse entity references.
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*
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* @ingroup views_relationship_handlers
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*/
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class views_handler_relationship_entity_reverse extends views_handler_relationship {
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/**
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* {@inheritdoc}
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*/
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public function init(&$view, &$options) {
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parent::init($view, $options);
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$this->field_info = field_info_field($this->definition['field_name']);
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}
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/**
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* Called to implement a relationship in a query.
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*/
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public function query() {
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$this->ensure_my_table();
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// First, relate our base table to the current base table to the
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// field, using the base table's id field to the field's column.
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$views_data = views_fetch_data($this->table);
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$left_field = $views_data['table']['base']['field'];
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$first = array(
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'left_table' => $this->table_alias,
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'left_field' => $left_field,
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'table' => $this->definition['field table'],
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'field' => $this->definition['field field'],
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);
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if (!empty($this->options['required'])) {
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$first['type'] = 'INNER';
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}
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if (!empty($this->definition['join_extra'])) {
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$first['extra'] = $this->definition['join_extra'];
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}
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if (!empty($this->definition['join_handler']) && class_exists($this->definition['join_handler'])) {
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$first_join = new $this->definition['join_handler'];
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}
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else {
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$first_join = new views_join();
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}
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$first_join->definition = $first;
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$first_join->construct();
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$first_join->adjusted = TRUE;
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$this->first_alias = $this->query->add_table($this->definition['field table'], $this->relationship, $first_join);
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// Second, relate the field table to the entity specified using
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// the entity id on the field table and the entity's id field.
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$second = array(
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'left_table' => $this->first_alias,
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'left_field' => 'entity_id',
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'table' => $this->definition['base'],
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'field' => $this->definition['base field'],
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);
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if (!empty($this->options['required'])) {
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$second['type'] = 'INNER';
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}
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if (!empty($this->definition['join_handler']) && class_exists($this->definition['join_handler'])) {
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$second_join = new $this->definition['join_handler'];
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}
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else {
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$second_join = new views_join();
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}
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$second_join->definition = $second;
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$second_join->construct();
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$second_join->adjusted = TRUE;
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// Use a short alias for this.
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$alias = $this->definition['field_name'] . '_' . $this->table;
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$this->alias = $this->query->add_relationship($alias, $second_join, $this->definition['base'], $this->relationship);
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}
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}
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