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<?php
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/**
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* @file
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* Contains the entity_views_handler_relationship class.
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*/
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/**
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* Relationship handler for data selection tables.
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*
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* This handler may only be used in conjunction with data selection based Views
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* tables or other base tables using a query plugin that supports data
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* selection.
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*
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* @see entity_views_field_definition()
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* @ingroup views_field_handlers
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*/
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class entity_views_handler_relationship extends views_handler_relationship {
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/**
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* Slightly modify the options form provided by the parent handler.
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*/
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public function options_form(&$form, &$form_state) {
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parent::options_form($form, $form_state);
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// This won't work with data selector-based relationships, as we only
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// inspect those *after* the results are known.
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$form['required']['#access'] = FALSE;
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// Notify the user of our restrictions regarding lists of entities, if
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// appropriate.
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if (!empty($this->definition['multiple'])) {
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$form['multiple_note'] = array(
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'#markup' => t('<strong>Note:</strong> This is a multi-valued relationship, which is currently not supported. ' .
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'Only the first related entity will be shown.'),
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'#weight' => -5,
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);
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}
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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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* As we don't add any data to the query itself, we don't have to do anything
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* here. Views just don't thinks we have been called unless we set our
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* $alias property. Otherwise, this override is just here to keep PHP from
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* blowing up by calling inexistent methods on the query plugin.
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*/
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public function query() {
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$this->alias = $this->options['id'];
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}
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} |