165 lines
3.7 KiB
PHP
165 lines
3.7 KiB
PHP
<?php
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/**
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* Taxonomy field class which set post terms when saving.
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*/
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class MASHSB_RWMB_Taxonomy_Field extends MASHSB_RWMB_Object_Choice_Field
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{
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/**
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* Add default value for 'taxonomy' field
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*
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* @param $field
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* @return array
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*/
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static function normalize( $field )
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{
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/**
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* Backwards compatibility with field args
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*/
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if ( isset( $field['options']['args'] ) )
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$field['query_args'] = $field['options']['args'];
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if ( isset( $field['options']['taxonomy'] ) )
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$field['taxonomy'] = $field['options']['taxonomy'];
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if ( isset( $field['options']['type'] ) )
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$field['field_type'] = $field['options']['type'];
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/**
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* Set default field args
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*/
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$field = parent::normalize( $field );
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$field = wp_parse_args( $field, array(
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'taxonomy' => 'category',
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) );
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/**
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* Set default query args
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*/
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$field['query_args'] = wp_parse_args( $field['query_args'], array(
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'hide_empty' => false,
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) );
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/**
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* Set default placeholder
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* - If multiple taxonomies: show 'Select a term'
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* - If single taxonomy: show 'Select a %taxonomy_name%'
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*/
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if ( empty( $field['placeholder'] ) )
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{
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$field['placeholder'] = __( 'Select a term', 'meta-box' );
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if ( is_string( $field['taxonomy'] ) && taxonomy_exists( $field['taxonomy'] ) )
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{
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$taxonomy_object = get_taxonomy( $field['taxonomy'] );
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$field['placeholder'] = sprintf( __( 'Select a %s', 'meta-box' ), $taxonomy_object->labels->singular_name );
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}
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}
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/**
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* Prevent cloning for taxonomy field
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*/
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$field['clone'] = false;
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return $field;
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}
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/**
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* Get field names of object to be used by walker
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*
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* @return array
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*/
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static function get_db_fields()
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{
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return array(
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'parent' => 'parent',
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'id' => 'term_id',
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'label' => 'name',
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);
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}
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/**
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* Get options for selects, checkbox list, etc via the terms
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*
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* @param array $field Field parameters
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*
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* @return array
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*/
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static function get_options( $field )
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{
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$options = get_terms( $field['taxonomy'], $field['query_args'] );
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return $options;
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}
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/**
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* Save meta value
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*
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* @param mixed $new
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* @param mixed $old
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* @param int $post_id
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* @param array $field
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*
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* @return string
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*/
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static function save( $new, $old, $post_id, $field )
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{
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$new = array_unique( array_map( 'intval', (array) $new ) );
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$new = empty( $new ) ? null : $new;
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wp_set_object_terms( $post_id, $new, $field['taxonomy'] );
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}
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/**
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* Standard meta retrieval
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*
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* @param int $post_id
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* @param bool $saved
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* @param array $field
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*
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* @return array
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*/
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static function meta( $post_id, $saved, $field )
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{
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$meta = get_the_terms( $post_id, $field['taxonomy'] );
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$meta = (array) $meta;
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$meta = wp_list_pluck( $meta, 'term_id' );
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return $meta;
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}
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/**
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* Get the field value
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* Return list of post term objects
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*
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* @param array $field Field parameters
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* @param array $args Additional arguments. Rarely used. See specific fields for details
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* @param int|null $post_id Post ID. null for current post. Optional.
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*
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* @return array List of post term objects
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*/
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static function get_value( $field, $args = array(), $post_id = null )
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{
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$value = get_the_terms( $post_id, $field['taxonomy'] );
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// Get single value if necessary
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if ( ! $field['clone'] && ! $field['multiple'] && is_array( $value ) )
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{
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$value = reset( $value );
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}
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return $value;
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}
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/**
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* Get option label
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*
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* @param string $value Option value
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* @param array $field Field parameter
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*
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* @return string
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*/
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static function get_option_label( $value, $field )
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{
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return sprintf(
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'<a href="%s" title="%s">%s</a>',
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esc_url( get_term_link( $value ) ),
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esc_attr( $value->name ),
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$value->name
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);
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}
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}
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