<?php
if( ! class_exists('acf_field_relationship') ) :
class acf_field_relationship extends acf_field {
/*
* __construct
*
* This function will setup the field type data
*
* @type function
* @date 5/03/2014
* @since 5.0.0
*
* @param n/a
* @return n/a
*/
function initialize() {
// vars
$this->name = 'relationship';
$this->label = __("Relationship",'acf');
$this->category = 'relational';
$this->defaults = array(
'post_type' => array(),
'taxonomy' => array(),
'min' => 0,
'max' => 0,
'filters' => array('search', 'post_type', 'taxonomy'),
'elements' => array(),
'return_format' => 'object'
);
// extra
add_action('wp_ajax_acf/fields/relationship/query', array($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 {
$args['post_type'] = acf_get_post_types();
}
// taxonomy
if( !empty($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']) ) {
$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' => $field['max'],
'data-s' => '',
'data-paged' => 1,
'data-post_type' => '',
'data-taxonomy' => '',
);
?>
<div <?php acf_esc_attr_e($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">
<span>
<?php acf_text_input( array('placeholder' => __("Search...",'acf'), 'data-filter' => 's') ); ?>
</span>
</div>
<?php endif;
/* post_type */
if( in_array('post_type', $filters) ): ?>
<div class="filter -post_type">
<span>
<?php acf_select_input( array('choices' => $filter_post_type_choices, 'data-filter' => 'post_type') ); ?>
</span>
</div>
<?php endif;
/* post_type */
if( in_array('taxonomy', $filters) ): ?>
<div class="filter -taxonomy">
<span>
<?php acf_select_input( array('choices' => $filter_taxonomy_choices, 'data-filter' => 'taxonomy') ); ?>
</span>
</div>
<?php endif; ?>
</div>
<?php endif; ?>
<div class="selection">
<div class="choices">
<ul class="acf-bl list choices-list"></ul>
</div>
<div class="values">
<ul class="acf-bl list values-list">
<?php if( !empty($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' => $post->ID) ); ?>
<span data-id="<?php echo esc_attr($post->ID); ?>" class="acf-rel-item">
<?php echo $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 ) {
// vars
$field['min'] = empty($field['min']) ? '' : $field['min'];
$field['max'] = empty($field['max']) ? '' : $field['max'];
// post_type
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'),
));
// taxonomy
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'),
));
// filters
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'),
),
));
// filters
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'),
),
));
// min
acf_render_field_setting( $field, array(
'label' => __('Minimum posts','acf'),
'instructions' => '',
'type' => 'number',
'name' => 'min',
));
// max
acf_render_field_setting( $field, array(
'label' => __('Maximum posts','acf'),
'instructions' => '',
'type' => 'number',
'name' => 'max',
));
// return_format
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',
));
}
/*
* format_value()
*
* This filter is appied 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( '%s requires at least %s selection', '%s requires at least %s selections', $field['min'], 'acf' );
$valid = sprintf( $valid, $field['label'], $field['min'] );
}
// return
return $valid;
}
/*
* update_value()
*
* This filter is appied to the $value before it is updated in the db
*
* @type filter
* @since 3.6
* @date 23/01/13
*
* @param $value - the value which will be saved in the database
* @param $post_id - the $post_id of which the value will be saved
* @param $field - the field array holding all the field options
*
* @return $value - the modified value
*/
function update_value( $value, $post_id, $field ) {
// Bail early if no value.
if( empty($value) ) {
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 );
}
// Return value.
return $value;
}
}
// initialize
acf_register_field_type( 'acf_field_relationship' );
endif; // class_exists check
?>