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<?php if ( ! class_exists( 'acf_field_relationship' ) ) : class acf_field_relationship extends acf_field { /** * This function will setup the field type data * * @type function * @date 5/03/2014 * @since 5.0.0 / public function initialize() { $this->name = 'relationship'; $this->label = __( 'Relationship', 'acf' ); $this->category = 'relational'; $this->description = __( 'A dual-column interface to select one or more posts, pages, or custom post type items to create a relationship with the item that you\'re currently editing. Includes options to search and filter.', 'acf' ); $this->preview_image = acf_get_url() . '/assets/images/field-type-previews/field-preview-relationship.png'; $this->doc_url = acf_add_url_utm_tags( 'https://www.advancedcustomfields.com/resources/relationship/', 'docs', 'field-type-selection' ); $this->defaults = array( 'post_type' => array(), 'taxonomy' => array(), 'min' => 0, 'max' => 0, 'filters' => array( 'search', 'post_type', 'taxonomy' ), 'elements' => array(), 'return_format' => 'object', 'bidirectional_target' => array(), ); add_filter( 'acf/conditional_logic/choices', array( $this, 'render_field_relation_conditional_choices' ), 10, 3 ); // extra add_action( 'wp_ajax_acf/fields/relationship/query', array( $this, 'ajax_query' ) ); add_action( 'wp_ajax_nopriv_acf/fields/relationship/query', array( $this, 'ajax_query' ) ); } /* * Filters choices in relation conditions. * * @since 6.3 * * @param array $choices The selected choice. * @param array $conditional_field The conditional field settings object. * @param string $rule_value The rule value. * @return array / public function render_field_relation_conditional_choices( $choices, $conditional_field, $rule_value ) { if ( ! is_array( $conditional_field ) \|\| $conditional_field['type'] !== 'relationship' ) { return $choices; } if ( ! empty( $rule_value ) ) { $post_title = get_the_title( $rule_value ); $choices = array( $rule_value => $post_title ); } return $choices; } /* * description * * @type function * @date 16/12/2015 * @since 5.3.2 * * @param $post_id (int) * @return $post_id (int) / function input_admin_enqueue_scripts() { // localize acf_localize_text( array( // 'Minimum values reached ( {min} values )' => __('Minimum values reached ( {min} values )', 'acf'), 'Maximum values reached ( {max} values )' => __( 'Maximum values reached ( {max} values )', 'acf' ), 'Loading' => __( 'Loading', 'acf' ), 'No matches found' => __( 'No matches found', 'acf' ), ) ); } /* * Returns AJAX results for the Relationship field. * * @since 5.0.0 * * @return void / public function ajax_query() { $nonce = acf_request_arg( 'nonce', '' ); $key = acf_request_arg( 'field_key', '' ); $conditional_logic = (bool) acf_request_arg( 'conditional_logic', false ); if ( $conditional_logic ) { if ( ! acf_current_user_can_admin() ) { die(); } // Use the standard ACF admin nonce. $nonce = ''; $key = ''; } if ( ! acf_verify_ajax( $nonce, $key, ! $conditional_logic ) ) { die(); } acf_send_ajax_results( $this->get_ajax_query( $_POST ) ); } /* * This function will return an array of data formatted for use in a select2 AJAX response * * @since 5.0.9 * * @param array $options An array of options for the query. * @return array / public function get_ajax_query( $options = array() ) { // defaults $options = wp_parse_args( $options, array( 'post_id' => 0, 's' => '', 'field_key' => '', 'paged' => 1, 'post_type' => '', 'include' => '', 'taxonomy' => '', ) ); // load field $field = acf_get_field( $options['field_key'] ); if ( ! $field ) { return false; } // vars $results = array(); $args = array(); $s = false; $is_search = false; // paged $args['posts_per_page'] = 20; $args['paged'] = intval( $options['paged'] ); // search if ( $options['s'] !== '' && empty( $options['include'] ) ) { // strip slashes (search may be integer) $s = wp_unslash( strval( $options['s'] ) ); // update vars $args['s'] = $s; $is_search = true; } // post_type if ( ! empty( $options['post_type'] ) ) { $args['post_type'] = acf_get_array( $options['post_type'] ); } elseif ( ! empty( $field['post_type'] ) ) { $args['post_type'] = acf_get_array( $field['post_type'] ); } else { $args['post_type'] = acf_get_post_types(); } // post status if ( ! empty( $options['post_status'] ) ) { $args['post_status'] = acf_get_array( $options['post_status'] ); } elseif ( ! empty( $field['post_status'] ) ) { $args['post_status'] = acf_get_array( $field['post_status'] ); } // taxonomy if ( ! empty( $options['taxonomy'] ) ) { // vars $term = acf_decode_taxonomy_term( $options['taxonomy'] ); // tax query $args['tax_query'] = array(); // append $args['tax_query'][] = array( 'taxonomy' => $term['taxonomy'], 'field' => 'slug', 'terms' => $term['term'], ); } elseif ( ! empty( $field['taxonomy'] ) ) { // vars $terms = acf_decode_taxonomy_terms( $field['taxonomy'] ); // append to $args $args['tax_query'] = array( 'relation' => 'OR', ); // now create the tax queries foreach ( $terms as $k => $v ) { $args['tax_query'][] = array( 'taxonomy' => $k, 'field' => 'slug', 'terms' => $v, ); } } if ( ! empty( $options['include'] ) ) { // If we have an include, we need to return only the selected posts. $args['post__in'] = array( $options['include'] ); } // filters $args = apply_filters( 'acf/fields/relationship/query', $args, $field, $options['post_id'] ); $args = apply_filters( 'acf/fields/relationship/query/name=' . $field['name'], $args, $field, $options['post_id'] ); $args = apply_filters( 'acf/fields/relationship/query/key=' . $field['key'], $args, $field, $options['post_id'] ); // get posts grouped by post type $groups = acf_get_grouped_posts( $args ); // bail early if no posts if ( empty( $groups ) ) { return false; } // loop foreach ( array_keys( $groups ) as $group_title ) { // vars $posts = acf_extract_var( $groups, $group_title ); // data $data = array( 'text' => $group_title, 'children' => array(), ); // convert post objects to post titles foreach ( array_keys( $posts ) as $post_id ) { $posts[ $post_id ] = $this->get_post_title( $posts[ $post_id ], $field, $options['post_id'] ); } // order posts by search if ( $is_search && empty( $args['orderby'] ) && isset( $args['s'] ) ) { $posts = acf_order_by_search( $posts, $args['s'] ); } // append to $data foreach ( array_keys( $posts ) as $post_id ) { $data['children'][] = $this->get_post_result( $post_id, $posts[ $post_id ] ); } // append to $results $results[] = $data; } // add as optgroup or results if ( count( $args['post_type'] ) == 1 ) { $results = $results[0]['children']; } // vars $response = array( 'results' => $results, 'limit' => $args['posts_per_page'], ); // return return $response; } /* * This function will return an array containing id, text and maybe description data * * @type function * @date 7/07/2016 * @since 5.4.0 * * @param $id (mixed) * @param $text (string) * @return (array) / function get_post_result( $id, $text ) { // vars $result = array( 'id' => $id, 'text' => $text, ); // return return $result; } /* * This function returns the HTML for a result * * @type function * @date 1/11/2013 * @since 5.0.0 * * @param $post (object) * @param $field (array) * @param $post_id (int) the post_id to which this value is saved to * @return (string) / function get_post_title( $post, $field, $post_id = 0, $is_search = 0 ) { // get post_id if ( ! $post_id ) { $post_id = acf_get_form_data( 'post_id' ); } // vars $title = acf_get_post_title( $post, $is_search ); // featured_image if ( acf_in_array( 'featured_image', $field['elements'] ) ) { // vars $class = 'thumbnail'; $thumbnail = acf_get_post_thumbnail( $post->ID, array( 17, 17 ) ); // icon if ( $thumbnail['type'] == 'icon' ) { $class .= ' -' . $thumbnail['type']; } // append $title = '<div class="' . $class . '">' . $thumbnail['html'] . '</div>' . $title; } // filters $title = apply_filters( 'acf/fields/relationship/result', $title, $post, $field, $post_id ); $title = apply_filters( 'acf/fields/relationship/result/name=' . $field['_name'], $title, $post, $field, $post_id ); $title = apply_filters( 'acf/fields/relationship/result/key=' . $field['key'], $title, $post, $field, $post_id ); // return return $title; } /* * Create the HTML interface for your field * * @param $field - an array holding all the field's data * * @type action * @since 3.6 * @date 23/01/13 / function render_field( $field ) { // vars $post_type = acf_get_array( $field['post_type'] ); $taxonomy = acf_get_array( $field['taxonomy'] ); $filters = acf_get_array( $field['filters'] ); // filters $filter_count = count( $filters ); $filter_post_type_choices = array(); $filter_taxonomy_choices = array(); // post_type filter if ( in_array( 'post_type', $filters ) ) { $filter_post_type_choices = array( '' => __( 'Select post type', 'acf' ), ) + acf_get_pretty_post_types( $post_type ); } // taxonomy filter if ( in_array( 'taxonomy', $filters ) ) { $term_choices = array(); $filter_taxonomy_choices = array( '' => __( 'Select taxonomy', 'acf' ), ); // check for specific taxonomy setting if ( $taxonomy ) { $terms = acf_get_encoded_terms( $taxonomy ); $term_choices = acf_get_choices_from_terms( $terms, 'slug' ); // if no terms were specified, find all terms } else { // restrict taxonomies by the post_type selected $term_args = array(); if ( $post_type ) { $term_args['taxonomy'] = acf_get_taxonomies( array( 'post_type' => $post_type, ) ); } // get terms $terms = acf_get_grouped_terms( $term_args ); $term_choices = acf_get_choices_from_grouped_terms( $terms, 'slug' ); } // append term choices $filter_taxonomy_choices = $filter_taxonomy_choices + $term_choices; } // div attributes $atts = array( 'id' => $field['id'], 'class' => "acf-relationship {$field['class']}", 'data-min' => $field['min'], 'data-max' => $field['max'], 'data-s' => '', 'data-paged' => 1, 'data-post_type' => '', 'data-taxonomy' => '', 'data-nonce' => wp_create_nonce( 'acf_field_' . $this->name . '_' . $field['key'] ), ); ?> <div <?php echo acf_esc_attrs( $atts ); ?>> <?php acf_hidden_input( array( 'name' => $field['name'], 'value' => '', ) ); ?> <?php / filters / if ( $filter_count ) : ?> <div class="filters -f<?php echo esc_attr( $filter_count ); ?>"> <?php / search / if ( in_array( 'search', $filters ) ) : ?> <div class="filter -search"> <?php acf_text_input( array( 'placeholder' => __( 'Search...', 'acf' ), 'data-filter' => 's', ) ); ?> </div> <?php endif; / post_type / if ( in_array( 'post_type', $filters ) ) : ?> <div class="filter -post_type"> <?php acf_select_input( array( 'choices' => $filter_post_type_choices, 'data-filter' => 'post_type', ) ); ?> </div> <?php endif; / post_type / if ( in_array( 'taxonomy', $filters ) ) : ?> <div class="filter -taxonomy"> <?php acf_select_input( array( 'choices' => $filter_taxonomy_choices, 'data-filter' => 'taxonomy', ) ); ?> </div> <?php endif; ?> </div> <?php endif; ?> <div class="selection"> <div class="choices"> <ul class="acf-bl list choices-list"></ul> </div> <div class="values"> <ul class="acf-bl list values-list"> <?php if ( ! empty( $field['value'] ) ) : // get posts $posts = acf_get_posts( array( 'post__in' => $field['value'], 'post_type' => $field['post_type'], ) ); // loop foreach ( $posts as $post ) : ?> <li> <?php acf_hidden_input( array( 'name' => $field['name'] . '[]', 'value' => $post->ID, ) ); ?> <span tabindex="0" data-id="<?php echo esc_attr( $post->ID ); ?>" class="acf-rel-item acf-rel-item-remove"> <?php echo acf_esc_html( $this->get_post_title( $post, $field ) ); ?> <a href="#" class="acf-icon -minus small dark" data-name="remove_item"></a> </span> </li> <?php endforeach; ?> <?php endif; ?> </ul> </div> </div> </div> <?php } /* * Create extra options for your field. This is rendered when editing a field. * The value of $field['name'] can be used (like bellow) to save extra data to the $field * * @type action * @since 3.6 * @date 23/01/13 * * @param $field - an array holding all the field's data / function render_field_settings( $field ) { acf_render_field_setting( $field, array( 'label' => __( 'Filter by Post Type', 'acf' ), 'instructions' => '', 'type' => 'select', 'name' => 'post_type', 'choices' => acf_get_pretty_post_types(), 'multiple' => 1, 'ui' => 1, 'allow_null' => 1, 'placeholder' => __( 'All post types', 'acf' ), ) ); acf_render_field_setting( $field, array( 'label' => __( 'Filter by Post Status', 'acf' ), 'instructions' => '', 'type' => 'select', 'name' => 'post_status', 'choices' => acf_get_pretty_post_statuses(), 'multiple' => 1, 'ui' => 1, 'allow_null' => 1, 'placeholder' => __( 'Any post status', 'acf' ), ) ); acf_render_field_setting( $field, array( 'label' => __( 'Filter by Taxonomy', 'acf' ), 'instructions' => '', 'type' => 'select', 'name' => 'taxonomy', 'choices' => acf_get_taxonomy_terms(), 'multiple' => 1, 'ui' => 1, 'allow_null' => 1, 'placeholder' => __( 'All taxonomies', 'acf' ), ) ); acf_render_field_setting( $field, array( 'label' => __( 'Filters', 'acf' ), 'instructions' => '', 'type' => 'checkbox', 'name' => 'filters', 'choices' => array( 'search' => __( 'Search', 'acf' ), 'post_type' => __( 'Post Type', 'acf' ), 'taxonomy' => __( 'Taxonomy', 'acf' ), ), ) ); acf_render_field_setting( $field, array( 'label' => __( 'Return Format', 'acf' ), 'instructions' => '', 'type' => 'radio', 'name' => 'return_format', 'choices' => array( 'object' => __( 'Post Object', 'acf' ), 'id' => __( 'Post ID', 'acf' ), ), 'layout' => 'horizontal', ) ); } /* * Renders the field settings used in the "Validation" tab. * * @since 6.0 * * @param array $field The field settings array. * @return void / function render_field_validation_settings( $field ) { $field['min'] = empty( $field['min'] ) ? '' : $field['min']; $field['max'] = empty( $field['max'] ) ? '' : $field['max']; acf_render_field_setting( $field, array( 'label' => __( 'Minimum Posts', 'acf' ), 'instructions' => '', 'type' => 'number', 'name' => 'min', ) ); acf_render_field_setting( $field, array( 'label' => __( 'Maximum Posts', 'acf' ), 'instructions' => '', 'type' => 'number', 'name' => 'max', ) ); } /* * Renders the field settings used in the "Presentation" tab. * * @since 6.0 * * @param array $field The field settings array. * @return void / function render_field_presentation_settings( $field ) { acf_render_field_setting( $field, array( 'label' => __( 'Elements', 'acf' ), 'instructions' => __( 'Selected elements will be displayed in each result', 'acf' ), 'type' => 'checkbox', 'name' => 'elements', 'choices' => array( 'featured_image' => __( 'Featured Image', 'acf' ), ), ) ); } /* * Renders the field settings used in the "Advanced" tab. * * @since 6.2 * * @param array $field The field settings array. * @return void / public function render_field_advanced_settings( $field ) { acf_render_bidirectional_field_settings( $field ); } /* * This filter is applied to the $value after it is loaded from the db and before it is returned to the template * * @type filter * @since 3.6 * @date 23/01/13 * * @param $value (mixed) the value which was loaded from the database * @param $post_id (mixed) the post_id from which the value was loaded * @param $field (array) the field array holding all the field options * * @return $value (mixed) the modified value / function format_value( $value, $post_id, $field ) { // bail early if no value if ( empty( $value ) ) { return $value; } // force value to array $value = acf_get_array( $value ); // convert to int $value = array_map( 'intval', $value ); // load posts if needed if ( $field['return_format'] == 'object' ) { // get posts $value = acf_get_posts( array( 'post__in' => $value, 'post_type' => $field['post_type'], ) ); } // return return $value; } /* * description * * @type function * @date 11/02/2014 * @since 5.0.0 * * @param $post_id (int) * @return $post_id (int) / function validate_value( $valid, $value, $field, $input ) { // default if ( empty( $value ) \|\| ! is_array( $value ) ) { $value = array(); } // min if ( count( $value ) < $field['min'] ) { $valid = _n( '%1$s requires at least %2$s selection', '%1$s requires at least %2$s selections', $field['min'], 'acf' ); $valid = sprintf( $valid, $field['label'], $field['min'] ); } // return return $valid; } /* * Filters the field value before it is saved into the database. * * @since 3.6 * * @param mixed $value The value which will be saved in the database. * @param integer $post_id The post_id of which the value will be saved. * @param array $field The field array holding all the field options. * * @return mixed $value The modified value. / public function update_value( $value, $post_id, $field ) { // Bail early if no value. if ( empty( $value ) ) { acf_update_bidirectional_values( array(), $post_id, $field ); return $value; } // Format array of values. // - ensure each value is an id. // - Parse each id as string for SQL LIKE queries. if ( acf_is_sequential_array( $value ) ) { $value = array_map( 'acf_idval', $value ); $value = array_map( 'strval', $value ); // Parse single value for id. } else { $value = acf_idval( $value ); } acf_update_bidirectional_values( acf_get_array( $value ), $post_id, $field ); // Return value. return $value; } /* * Validates relationship fields updated via the REST API. * * @param boolean $valid The current validity booleean * @param integer $value The value of the field * @param array $field The field array * @return boolean\|WP_Error / public function validate_rest_value( $valid, $value, $field ) { return acf_get_field_type( 'post_object' )->validate_rest_value( $valid, $value, $field ); } /* * Return the schema array for the REST API. * * @param array $field * @return array / public function get_rest_schema( array $field ) { $schema = array( 'type' => array( 'integer', 'array', 'null' ), 'required' => ! empty( $field['required'] ), 'items' => array( 'type' => 'integer', ), ); if ( empty( $field['allow_null'] ) ) { $schema['minItems'] = 1; } if ( ! empty( $field['min'] ) ) { $schema['minItems'] = (int) $field['min']; } if ( ! empty( $field['max'] ) ) { $schema['maxItems'] = (int) $field['max']; } return $schema; } /* * @see \acf_field::get_rest_links() * @param mixed $value The raw (unformatted) field value. * @param integer\|string $post_id * @param array $field * @return array / public function get_rest_links( $value, $post_id, array $field ) { $links = array(); if ( empty( $value ) ) { return $links; } foreach ( (array) $value as $object_id ) { if ( ! $post_type = get_post_type( $object_id ) or ! $post_type = get_post_type_object( $post_type ) ) { continue; } $rest_base = acf_get_object_type_rest_base( $post_type ); $links[] = array( 'rel' => $post_type->name === 'attachment' ? 'acf:attachment' : 'acf:post', 'href' => rest_url( sprintf( '/wp/v2/%s/%s', $rest_base, $object_id ) ), 'embeddable' => true, ); } return $links; } /* * Apply basic formatting to prepare the value for default REST output. * * @param mixed $value * @param string\|integer $post_id * @param array $field * @return mixed */ public function format_value_for_rest( $value, $post_id, array $field ) { return acf_format_numerics( $value ); } } // initialize acf_register_field_type( 'acf_field_relationship' ); endif; // class_exists check ?>

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