595 lines
11 KiB
PHP
595 lines
11 KiB
PHP
<?php
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/*
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* ACF Post Object Field Class
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*
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* All the logic for this field type
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*
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* @class acf_field_post_object
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* @extends acf_field
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* @package ACF
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* @subpackage Fields
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*/
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if( ! class_exists('acf_field_post_object') ) :
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class acf_field_post_object extends acf_field {
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/*
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* __construct
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*
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* This function will setup the field type data
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*
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* @type function
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* @date 5/03/2014
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* @since 5.0.0
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*
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* @param n/a
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* @return n/a
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*/
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function __construct() {
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// vars
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$this->name = 'post_object';
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$this->label = __("Post Object",'acf');
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$this->category = 'relational';
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$this->defaults = array(
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'post_type' => array(),
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'taxonomy' => array(),
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'allow_null' => 0,
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'multiple' => 0,
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'return_format' => 'object',
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'ui' => 1,
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);
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// extra
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add_action('wp_ajax_acf/fields/post_object/query', array($this, 'ajax_query'));
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add_action('wp_ajax_nopriv_acf/fields/post_object/query', array($this, 'ajax_query'));
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// do not delete!
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parent::__construct();
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}
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/*
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* get_choices
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*
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* This function will return an array of data formatted for use in a select2 AJAX response
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*
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* @type function
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* @date 15/10/2014
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* @since 5.0.9
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*
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* @param $options (array)
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* @return (array)
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*/
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function get_choices( $options = array() ) {
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// defaults
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$options = acf_parse_args($options, array(
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'post_id' => 0,
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's' => '',
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'field_key' => '',
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'paged' => 1
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));
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// vars
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$r = array();
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$args = array();
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// paged
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$args['posts_per_page'] = 20;
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$args['paged'] = $options['paged'];
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// load field
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$field = acf_get_field( $options['field_key'] );
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// bail early if no field
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if( !$field ) return false;
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// update $args
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if( !empty($field['post_type']) ) {
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$args['post_type'] = acf_get_array( $field['post_type'] );
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} else {
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$args['post_type'] = acf_get_post_types();
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}
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// create tax queries
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if( !empty($field['taxonomy']) ) {
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// append to $args
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$args['tax_query'] = array();
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// decode terms
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$taxonomies = acf_decode_taxonomy_terms( $field['taxonomy'] );
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// now create the tax queries
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foreach( $taxonomies as $taxonomy => $terms ) {
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$args['tax_query'][] = array(
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'taxonomy' => $taxonomy,
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'field' => 'slug',
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'terms' => $terms,
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);
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}
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}
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// search
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if( $options['s'] ) {
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$args['s'] = $options['s'];
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}
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// filters
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$args = apply_filters('acf/fields/post_object/query', $args, $field, $options['post_id']);
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$args = apply_filters('acf/fields/post_object/query/name=' . $field['name'], $args, $field, $options['post_id'] );
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$args = apply_filters('acf/fields/post_object/query/key=' . $field['key'], $args, $field, $options['post_id'] );
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// get posts grouped by post type
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$groups = acf_get_grouped_posts( $args );
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if( !empty($groups) ) {
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foreach( array_keys($groups) as $group_title ) {
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// vars
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$posts = acf_extract_var( $groups, $group_title );
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$titles = array();
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// data
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$data = array(
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'text' => $group_title,
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'children' => array()
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);
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foreach( array_keys($posts) as $post_id ) {
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// override data
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$posts[ $post_id ] = $this->get_post_title( $posts[ $post_id ], $field, $options['post_id'] );
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};
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// order by search
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if( !empty($args['s']) ) {
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$posts = acf_order_by_search( $posts, $args['s'] );
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}
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// append to $data
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foreach( array_keys($posts) as $post_id ) {
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$data['children'][] = array(
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'id' => $post_id,
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'text' => $posts[ $post_id ]
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);
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}
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// append to $r
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$r[] = $data;
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}
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// optgroup or single
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if( count($args['post_type']) == 1 ) {
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$r = $r[0]['children'];
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}
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}
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// return
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return $r;
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}
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/*
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* ajax_query
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*
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* description
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*
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* @type function
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* @date 24/10/13
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* @since 5.0.0
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*
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* @param $post_id (int)
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* @return $post_id (int)
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*/
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function ajax_query() {
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// validate
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if( !acf_verify_ajax() ) {
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die();
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}
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// get choices
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$choices = $this->get_choices( $_POST );
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// validate
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if( !$choices ) {
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die();
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}
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// return JSON
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echo json_encode( $choices );
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die();
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}
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/*
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* get_post_title
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*
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* This function returns the HTML for a result
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*
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* @type function
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* @date 1/11/2013
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* @since 5.0.0
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*
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* @param $post (object)
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* @param $field (array)
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* @param $post_id (int) the post_id to which this value is saved to
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* @return (string)
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*/
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function get_post_title( $post, $field, $post_id = 0 ) {
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// get post_id
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if( !$post_id ) $post_id = acf_get_form_data('post_id');
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// vars
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$title = acf_get_post_title( $post );
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// filters
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$title = apply_filters('acf/fields/post_object/result', $title, $post, $field, $post_id);
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$title = apply_filters('acf/fields/post_object/result/name=' . $field['_name'], $title, $post, $field, $post_id);
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$title = apply_filters('acf/fields/post_object/result/key=' . $field['key'], $title, $post, $field, $post_id);
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// return
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return $title;
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}
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/*
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* render_field()
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*
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* Create the HTML interface for your field
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*
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* @param $field - an array holding all the field's data
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*
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* @type action
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* @since 3.6
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* @date 23/01/13
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*/
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function render_field( $field ) {
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// Change Field into a select
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$field['type'] = 'select';
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$field['ui'] = 1;
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$field['ajax'] = 1;
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$field['choices'] = array();
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// populate choices if value exists
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if( !empty($field['value']) ) {
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// get posts
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$posts = acf_get_posts(array(
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'post__in' => $field['value'],
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'post_type' => $field['post_type']
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));
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// set choices
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if( !empty($posts) ) {
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foreach( array_keys($posts) as $i ) {
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// vars
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$post = acf_extract_var( $posts, $i );
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// append to choices
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$field['choices'][ $post->ID ] = $this->get_post_title( $post, $field );
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}
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}
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}
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// render
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acf_render_field( $field );
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}
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/*
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* render_field_settings()
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*
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* Create extra options for your field. This is rendered when editing a field.
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* The value of $field['name'] can be used (like bellow) to save extra data to the $field
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*
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* @type action
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* @since 3.6
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* @date 23/01/13
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*
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* @param $field - an array holding all the field's data
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*/
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function render_field_settings( $field ) {
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// default_value
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acf_render_field_setting( $field, array(
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'label' => __('Filter by Post Type','acf'),
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'instructions' => '',
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'type' => 'select',
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'name' => 'post_type',
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'choices' => acf_get_pretty_post_types(),
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'multiple' => 1,
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'ui' => 1,
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'allow_null' => 1,
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'placeholder' => __("All post types",'acf'),
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));
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// default_value
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acf_render_field_setting( $field, array(
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'label' => __('Filter by Taxonomy','acf'),
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'instructions' => '',
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'type' => 'select',
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'name' => 'taxonomy',
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'choices' => acf_get_taxonomy_terms(),
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'multiple' => 1,
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'ui' => 1,
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'allow_null' => 1,
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'placeholder' => __("All taxonomies",'acf'),
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));
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// allow_null
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acf_render_field_setting( $field, array(
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'label' => __('Allow Null?','acf'),
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'instructions' => '',
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'type' => 'radio',
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'name' => 'allow_null',
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'choices' => array(
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1 => __("Yes",'acf'),
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0 => __("No",'acf'),
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),
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'layout' => 'horizontal',
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));
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// multiple
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acf_render_field_setting( $field, array(
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'label' => __('Select multiple values?','acf'),
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'instructions' => '',
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'type' => 'radio',
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'name' => 'multiple',
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'choices' => array(
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1 => __("Yes",'acf'),
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0 => __("No",'acf'),
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),
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'layout' => 'horizontal',
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));
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// return_format
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acf_render_field_setting( $field, array(
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'label' => __('Return Format','acf'),
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'instructions' => '',
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'type' => 'radio',
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'name' => 'return_format',
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'choices' => array(
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'object' => __("Post Object",'acf'),
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'id' => __("Post ID",'acf'),
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),
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'layout' => 'horizontal',
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));
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}
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/*
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* load_value()
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*
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* This filter is applied to the $value after it is loaded from the db
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*
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* @type filter
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* @since 3.6
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* @date 23/01/13
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*
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* @param $value (mixed) the value found in the database
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* @param $post_id (mixed) the $post_id from which the value was loaded
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* @param $field (array) the field array holding all the field options
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* @return $value
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*/
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function load_value( $value, $post_id, $field ) {
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// ACF4 null
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if( $value === 'null' ) {
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return false;
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}
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// return
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return $value;
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}
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/*
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* format_value()
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*
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* This filter is appied to the $value after it is loaded from the db and before it is returned to the template
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*
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* @type filter
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* @since 3.6
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* @date 23/01/13
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*
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* @param $value (mixed) the value which was loaded from the database
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* @param $post_id (mixed) the $post_id from which the value was loaded
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* @param $field (array) the field array holding all the field options
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*
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* @return $value (mixed) the modified value
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*/
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function format_value( $value, $post_id, $field ) {
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// bail early if no value
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if( empty($value) ) {
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return $value;
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}
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// force value to array
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$value = acf_get_array( $value );
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// convert values to int
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$value = array_map('intval', $value);
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// load posts if needed
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if( $field['return_format'] == 'object' ) {
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// get posts
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$value = acf_get_posts(array(
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'post__in' => $value,
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'post_type' => $field['post_type']
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));
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}
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// convert back from array if neccessary
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if( !$field['multiple'] ) {
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$value = array_shift($value);
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}
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// return value
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return $value;
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}
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/*
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* update_value()
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*
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* This filter is appied to the $value before it is updated in the db
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*
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* @type filter
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* @since 3.6
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* @date 23/01/13
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*
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* @param $value - the value which will be saved in the database
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* @param $post_id - the $post_id of which the value will be saved
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* @param $field - the field array holding all the field options
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*
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* @return $value - the modified value
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*/
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function update_value( $value, $post_id, $field ) {
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// validate
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if( empty($value) ) {
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return $value;
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}
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// format
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if( is_array($value) ) {
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// array
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foreach( $value as $k => $v ){
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// object?
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if( is_object($v) && isset($v->ID) ) {
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$value[ $k ] = $v->ID;
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}
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}
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// save value as strings, so we can clearly search for them in SQL LIKE statements
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$value = array_map('strval', $value);
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} elseif( is_object($value) && isset($value->ID) ) {
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// object
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$value = $value->ID;
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}
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// return
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return $value;
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}
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}
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new acf_field_post_object();
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endif;
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?>
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