<?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(),
);
// 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' ) );
}
/*
* input_admin_enqueue_scripts
*
* 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' ),
)
);
}
/*
* ajax_query
*
* description
*
* @type function
* @date 24/10/13
* @since 5.0.0
*
* @param $post_id (int)
* @return $post_id (int)
*/
function ajax_query() {
// validate
if ( ! acf_verify_ajax() ) {
die();
}
// get choices
$response = $this->get_ajax_query( $_POST );
// return
acf_send_ajax_results( $response );
}
/*
* get_ajax_query
*
* This function will return an array of data formatted for use in a select2 AJAX response
*
* @type function
* @date 15/10/2014
* @since 5.0.9
*
* @param $options (array)
* @return (array)
*/
function get_ajax_query( $options = array() ) {
// defaults
$options = wp_parse_args(
$options,
array(
'post_id' => 0,
's' => '',
'field_key' => '',
'paged' => 1,
'post_type' => '',
'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'] !== '' ) {
// 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,
);
}
}
// 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;
}
/*
* get_post_result
*
* 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;
}
/*
* get_post_title
*
* 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;
}
/*
* render_field()
*
* 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' => '',
);
?>
<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
}
/*
* render_field_settings()
*
* 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 );
}
/*
* format_value()
*
* 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;
}
/*
* validate_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 int $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 bool $valid
* @param int $value
* @param array $field
*
* @return bool|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 int|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|int $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
?>