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<?php
/*
* ACF Taxonomy Field Class
*
* All the logic for this field type
*
* @class acf_field_tab
* @extends acf_field
* @package ACF
* @subpackage Fields
*/
if( ! class_exists('acf_field_taxonomy') ) :
class acf_field_taxonomy 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 __construct() {
// vars
$this->name = 'taxonomy';
$this->label = __("Taxonomy",'acf');
$this->category = 'relational';
$this->defaults = array(
'taxonomy' => 'category',
'field_type' => 'checkbox',
'multiple' => 0,
'allow_null' => 0,
//'load_save_terms' => 0, // removed in 5.2.7
'return_format' => 'id',
'add_term' => 1, // 5.2.3
'load_terms' => 0, // 5.2.7
'save_terms' => 0 // 5.2.7
);
// ajax
add_action('wp_ajax_acf/fields/taxonomy/query', array($this, 'ajax_query'));
add_action('wp_ajax_nopriv_acf/fields/taxonomy/query', array($this, 'ajax_query'));
add_action('wp_ajax_acf/fields/taxonomy/add_term', array($this, 'ajax_add_term'));
// custom set_terms
$this->save_post_terms = array();
add_action('acf/save_post', array($this, 'save_post'), 15, 1);
// do not delete!
parent::__construct();
}
/*
* get_choices
*
* 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_choices( $options = array() ) {
// defaults
$options = acf_parse_args($options, array(
'post_id' => 0,
's' => '',
'field_key' => '',
'paged' => 0
));
// load field
$field = acf_get_field( $options['field_key'] );
if( !$field ) {
return false;
}
// vars
$r = array();
$args = array();
$is_hierarchical = is_taxonomy_hierarchical( $field['taxonomy'] );
$is_pagination = ($options['paged'] > 0);
$limit = 20;
$offset = 20 * ($options['paged'] - 1);
// hide empty
$args['hide_empty'] = false;
// pagination
// - don't bother for hierarchial terms, we will need to load all terms anyway
if( !$is_hierarchical && $is_pagination ) {
$args['offset'] = $offset;
$args['number'] = $limit;
}
// search
if( $options['s'] ) {
$args['search'] = $options['s'];
}
// filters
$args = apply_filters('acf/fields/taxonomy/query', $args, $field, $options['post_id']);
$args = apply_filters('acf/fields/taxonomy/query/name=' . $field['name'], $args, $field, $options['post_id'] );
$args = apply_filters('acf/fields/taxonomy/query/key=' . $field['key'], $args, $field, $options['post_id'] );
// get terms
$terms = get_terms( $field['taxonomy'], $args );
// sort into hierachial order!
if( $is_hierarchical ) {
// get parent
$parent = acf_maybe_get( $args, 'parent', 0 );
$parent = acf_maybe_get( $args, 'child_of', $parent );
// this will fail if a search has taken place because parents wont exist
if( empty($args['search']) ) {
$terms = _get_term_children( $parent, $terms, $field['taxonomy'] );
}
// fake pagination
if( $is_pagination ) {
$terms = array_slice($terms, $offset, $limit);
}
}
/// append to r
foreach( $terms as $term ) {
// add to json
$r[] = array(
'id' => $term->term_id,
'text' => $this->get_term_title( $term, $field, $options['post_id'] )
);
}
// return
return $r;
}
/*
* 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
$choices = $this->get_choices( $_POST );
// validate
if( !$choices ) die();
// return JSON
echo json_encode( $choices );
die();
}
/*
* get_term_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_term_title( $term, $field, $post_id = 0 ) {
// get post_id
if( !$post_id ) $post_id = acf_get_form_data('post_id');
// vars
$title = '';
// ancestors
$ancestors = get_ancestors( $term->term_id, $field['taxonomy'] );
if( !empty($ancestors) ) {
$title .= str_repeat('- ', count($ancestors));
}
// title
$title .= $term->name;
// filters
$title = apply_filters('acf/fields/taxonomy/result', $title, $term, $field, $post_id);
$title = apply_filters('acf/fields/taxonomy/result/name=' . $field['_name'] , $title, $term, $field, $post_id);
$title = apply_filters('acf/fields/taxonomy/result/key=' . $field['key'], $title, $term, $field, $post_id);
// return
return $title;
}
/*
* get_terms
*
* This function will return an array of terms for a given field value
*
* @type function
* @date 13/06/2014
* @since 5.0.0
*
* @param $value (array)
* @return $value
*/
function get_terms( $value, $taxonomy = 'category' ) {
// load terms in 1 query to save multiple DB calls from following code
if( count($value) > 1 ) {
$terms = get_terms($taxonomy, array(
'hide_empty' => false,
'include' => $value,
));
}
// update value to include $post
foreach( array_keys($value) as $i ) {
$value[ $i ] = get_term( $value[ $i ], $taxonomy );
}
// filter out null values
$value = array_filter($value);
// return
return $value;
}
/*
* load_value()
*
* This filter is appied to the $value after it is loaded from the db
*
* @type filter
* @since 3.6
* @date 23/01/13
*
* @param $value - the value found in the database
* @param $post_id - the $post_id from which the value was loaded from
* @param $field - the field array holding all the field options
*
* @return $value - the value to be saved in te database
*/
function load_value( $value, $post_id, $field ) {
// get valid terms
$value = acf_get_valid_terms($value, $field['taxonomy']);
// load_terms
if( $field['load_terms'] ) {
// get terms
$term_ids = wp_get_object_terms($post_id, $field['taxonomy'], array('fields' => 'ids', 'orderby' => 'none'));
// bail early if no terms
if( empty($term_ids) || is_wp_error($term_ids) ) return false;
// sort
if( !empty($value) ) {
$order = array();
foreach( $term_ids as $i => $v ) {
$order[ $i ] = array_search($v, $value);
}
array_multisort($order, $term_ids);
}
// update value
$value = $term_ids;
}
// convert back from array if neccessary
if( $field['field_type'] == 'select' || $field['field_type'] == 'radio' ) {
$value = array_shift($value);
}
// return
return $value;
}
/*
* 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 $field - the field array holding all the field options
* @param $post_id - the $post_id of which the value will be saved
*
* @return $value - the modified value
*/
function update_value( $value, $post_id, $field ) {
// vars
if( is_array($value) ) {
$value = array_filter($value);
}
// save_terms
if( $field['save_terms'] ) {
// vars
$taxonomy = $field['taxonomy'];
// force value to array
$term_ids = acf_get_array( $value );
// convert to int
$term_ids = array_map('intval', $term_ids);
// if called directly from frontend update_field()
if( !did_action('acf/save_post') ) {
wp_set_object_terms( $post_id, $term_ids, $taxonomy, false );
return $value;
}
// get existing term id's (from a previously saved field)
$old_term_ids = isset($this->save_post_terms[ $taxonomy ]) ? $this->save_post_terms[ $taxonomy ] : array();
// append
$this->save_post_terms[ $taxonomy ] = array_merge($old_term_ids, $term_ids);
}
// return
return $value;
}
/*
* save_post
*
* This function will save any terms in the save_post_terms array
*
* @type function
* @date 26/11/2014
* @since 5.0.9
*
* @param $post_id (int)
* @return n/a
*/
function save_post( $post_id ) {
// bail ealry if no terms
if( empty($this->save_post_terms) ) return;
// loop over terms
foreach( $this->save_post_terms as $taxonomy => $term_ids ){
wp_set_object_terms( $post_id, $term_ids, $taxonomy, false );
}
// reset array ( WP saves twice )
$this->save_post_terms = array();
}
/*
* 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 false;
// force value to array
$value = acf_get_array( $value );
// load posts if needed
if( $field['return_format'] == 'object' ) {
// get posts
$value = $this->get_terms( $value, $field["taxonomy"] );
}
// convert back from array if neccessary
if( $field['field_type'] == 'select' || $field['field_type'] == 'radio' ) {
$value = array_shift($value);
}
// return
return $value;
}
/*
* render_field()
*
* Create the HTML interface for your field
*
* @type action
* @since 3.6
* @date 23/01/13
*
* @param $field - an array holding all the field's data
*/
function render_field( $field ) {
// force value to array
$field['value'] = acf_get_array( $field['value'] );
// vars
$div = array(
'class' => 'acf-taxonomy-field acf-soh',
'data-save' => $field['save_terms'],
'data-type' => $field['field_type'],
'data-taxonomy' => $field['taxonomy']
);
// get taxonomy
$taxonomy = get_taxonomy( $field['taxonomy'] );
?>
<div <?php acf_esc_attr_e($div); ?>>
<?php if( $field['add_term'] && current_user_can( $taxonomy->cap->manage_terms) ): ?>
<a href="#" class="acf-icon -plus acf-js-tooltip small acf-soh-target" data-name="add" title="<?php echo esc_attr($taxonomy->labels->add_new_item); ?>"></a>
<?php endif;
if( $field['field_type'] == 'select' ) {
$field['multiple'] = 0;
$this->render_field_select( $field );
} elseif( $field['field_type'] == 'multi_select' ) {
$field['multiple'] = 1;
$this->render_field_select( $field );
} elseif( $field['field_type'] == 'radio' ) {
$this->render_field_checkbox( $field );
} elseif( $field['field_type'] == 'checkbox' ) {
$this->render_field_checkbox( $field );
}
?>
</div><?php
}
/*
* render_field_select()
*
* Create the HTML interface for your field
*
* @type action
* @since 3.6
* @date 23/01/13
*
* @param $field - an array holding all the field's data
*/
function render_field_select( $field ) {
// Change Field into a select
$field['type'] = 'select';
$field['ui'] = 1;
$field['ajax'] = 1;
$field['choices'] = array();
// value
if( !empty($field['value']) ) {
// get terms
$terms = $this->get_terms( $field['value'], $field['taxonomy'] );
// set choices
if( !empty($terms) ) {
foreach( array_keys($terms) as $i ) {
// vars
$term = acf_extract_var( $terms, $i );
// append to choices
$field['choices'][ $term->term_id ] = $this->get_term_title( $term, $field );
}
}
}
// render select
acf_render_field( $field );
}
/*
* render_field_checkbox()
*
* Create the HTML interface for your field
*
* @type action
* @since 3.6
* @date 23/01/13
*
* @param $field - an array holding all the field's data
*/
function render_field_checkbox( $field ) {
// hidden input
acf_hidden_input(array(
'type' => 'hidden',
'name' => $field['name'],
));
// checkbox saves an array
if( $field['field_type'] == 'checkbox' ) {
$field['name'] .= '[]';
}
// taxonomy
$taxonomy_obj = get_taxonomy($field['taxonomy']);
// vars
$args = array(
'taxonomy' => $field['taxonomy'],
'show_option_none' => __('No', 'acf') . ' ' . $taxonomy_obj->labels->name,
'hide_empty' => false,
'style' => 'none',
'walker' => new acf_taxonomy_field_walker( $field ),
);
// filter for 3rd party customization
$args = apply_filters('acf/fields/taxonomy/wp_list_categories', $args, $field);
$args = apply_filters('acf/fields/taxonomy/wp_list_categories/name=' . $field['_name'], $args, $field);
$args = apply_filters('acf/fields/taxonomy/wp_list_categories/key=' . $field['key'], $args, $field);
?><div class="categorychecklist-holder">
<ul class="acf-checkbox-list acf-bl">
<?php if( $field['field_type'] == 'radio' && $field['allow_null'] ): ?>
<li>
<label class="selectit">
<input type="radio" name="<?php echo $field['name']; ?>" value="" /> <?php _e("None", 'acf'); ?>
</label>
</li>
<?php endif; ?>
<?php wp_list_categories( $args ); ?>
</ul>
</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 ) {
// default_value
acf_render_field_setting( $field, array(
'label' => __('Taxonomy','acf'),
'instructions' => __('Select the taxonomy to be displayed','acf'),
'type' => 'select',
'name' => 'taxonomy',
'choices' => acf_get_taxonomies(),
));
// field_type
acf_render_field_setting( $field, array(
'label' => __('Appearance','acf'),
'instructions' => __('Select the appearance of this field','acf'),
'type' => 'select',
'name' => 'field_type',
'optgroup' => true,
'choices' => array(
__("Multiple Values",'acf') => array(
'checkbox' => __('Checkbox', 'acf'),
'multi_select' => __('Multi Select', 'acf')
),
__("Single Value",'acf') => array(
'radio' => __('Radio Buttons', 'acf'),
'select' => __('Select', 'acf')
)
)
));
// allow_null
acf_render_field_setting( $field, array(
'label' => __('Allow Null?','acf'),
'instructions' => '',
'type' => 'radio',
'name' => 'allow_null',
'choices' => array(
1 => __("Yes",'acf'),
0 => __("No",'acf'),
),
'layout' => 'horizontal',
));
// add_term
acf_render_field_setting( $field, array(
'label' => __('Create Terms','acf'),
'instructions' => __('Allow new terms to be created whilst editing','acf'),
'type' => 'radio',
'name' => 'add_term',
'choices' => array(
1 => __("Yes",'acf'),
0 => __("No",'acf'),
),
'layout' => 'horizontal',
));
// save_terms
acf_render_field_setting( $field, array(
'label' => __('Save Terms','acf'),
'instructions' => __('Connect selected terms to the post','acf'),
'type' => 'radio',
'name' => 'save_terms',
'choices' => array(
1 => __("Yes",'acf'),
0 => __("No",'acf'),
),
'layout' => 'horizontal',
));
// load_terms
acf_render_field_setting( $field, array(
'label' => __('Load Terms','acf'),
'instructions' => __('Load value from posts terms','acf'),
'type' => 'radio',
'name' => 'load_terms',
'choices' => array(
1 => __("Yes",'acf'),
0 => __("No",'acf'),
),
'layout' => 'horizontal',
));
// return_format
acf_render_field_setting( $field, array(
'label' => __('Return Value','acf'),
'instructions' => '',
'type' => 'radio',
'name' => 'return_format',
'choices' => array(
'object' => __("Term Object",'acf'),
'id' => __("Term ID",'acf')
),
'layout' => 'horizontal',
));
}
/*
* ajax_add_term
*
* description
*
* @type function
* @date 17/04/2015
* @since 5.2.3
*
* @param $post_id (int)
* @return $post_id (int)
*/
function ajax_add_term() {
// vars
$args = acf_parse_args($_POST, array(
'nonce' => '',
'field_key' => '',
'term_name' => '',
'term_parent' => ''
));
// verify nonce
if( ! wp_verify_nonce($args['nonce'], 'acf_nonce') ) {
die();
}
// load field
$field = acf_get_field( $args['field_key'] );
if( !$field ) {
die();
}
// vars
$taxonomy_obj = get_taxonomy($field['taxonomy']);
$taxonomy_label = $taxonomy_obj->labels->singular_name;
// validate cap
// note: this situation should never occur due to condition of the add new button
if( !current_user_can( $taxonomy_obj->cap->manage_terms) ) {
echo '<p><strong>' . __("Error", 'acf') . '.</strong> ' . sprintf( __('User unable to add new %s', 'acf'), $taxonomy_label ) . '</p>';
die;
}
// save?
if( $args['term_name'] ) {
// exists
if( term_exists($args['term_name'], $field['taxonomy']) ) {
wp_send_json_error(array(
'error' => sprintf( __('%s already exists', 'acf'), $taxonomy_label )
));
}
// insert
$extra = array();
if( $args['term_parent'] ) {
$extra['parent'] = $args['term_parent'];
}
$data = wp_insert_term( $args['term_name'], $field['taxonomy'], $extra );
// error?
if( is_wp_error($data) ) {
wp_send_json_error(array(
'error' => $data->get_error_message()
));
}
// ancestors
$prefix = '';
$ancestors = get_ancestors( $data['term_id'], $field['taxonomy'] );
if( !empty($ancestors) ) {
$prefix = str_repeat('- ', count($ancestors));
}
// success
wp_send_json_success(array(
'message' => sprintf( __('%s added', 'acf'), $taxonomy_label ),
'term_id' => $data['term_id'],
'term_name' => $args['term_name'],
'term_label' => $prefix . $args['term_name'],
'term_parent' => $args['term_parent']
));
}
?><form method="post"><?php
acf_render_field_wrap(array(
'label' => __('Name', 'acf'),
'name' => 'term_name',
'type' => 'text'
));
if( is_taxonomy_hierarchical( $field['taxonomy'] ) ) {
$choices = array();
$choices2 = $this->get_choices(array( 'field_key' => $field['key'] ));
if( $choices2 ) {
foreach( $choices2 as $v) {
$choices[ $v['id'] ] = $v['text'];
}
}
acf_render_field_wrap(array(
'label' => __('Parent', 'acf'),
'name' => 'term_parent',
'type' => 'select',
'allow_null' => 1,
'ui' => 0,
'choices' => $choices
));
}
?><p class="acf-submit"><button class="acf-button button button-primary" type="submit"><?php _e("Add", 'acf'); ?></button><i class="acf-spinner"></i><span></span></p></form><?php
// die
die;
}
}
new acf_field_taxonomy();
endif;
if( ! class_exists('acf_taxonomy_field_walker') ) :
class acf_taxonomy_field_walker extends Walker {
var $field = null,
$tree_type = 'category',
$db_fields = array ( 'parent' => 'parent', 'id' => 'term_id' );
function __construct( $field ) {
$this->field = $field;
}
function start_el( &$output, $term, $depth = 0, $args = array(), $current_object_id = 0) {
// vars
$selected = in_array( $term->term_id, $this->field['value'] );
// append
$output .= '<li data-id="' . $term->term_id . '"><label><input type="' . $this->field['field_type'] . '" name="' . $this->field['name'] . '" value="' . $term->term_id . '" ' . ($selected ? 'checked="checked"' : '') . ' /> <span>' . $term->name . '</span></label>';
}
function end_el( &$output, $term, $depth = 0, $args = array() ) {
// append
$output .= '</li>' . "\n";
}
function start_lvl( &$output, $depth = 0, $args = array() ) {
// append
$output .= '<ul class="children acf-bl">' . "\n";
}
function end_lvl( &$output, $depth = 0, $args = array() ) {
// append
$output .= '</ul>' . "\n";
}
}
endif;
?>