dynamic select

acf-extensions.php

@@ -51,6 +51,7 @@ function include_acf_extensions_plugin() {
 	include_once('fields/class-acf-field-latest_posts.php');
 	include_once('fields/class-acf-field-link.php');
 	include_once('fields/class-acf-field-map.php');
+	include_once('fields/class-acf-field-dynamic_select.php');
 
 	include_once('rules/class-acf-rule-multisite.php');
 	include_once('rules/class-acf-rule-tax-type.php');

changelog.md

@@ -1,6 +1,10 @@
 CHANGELOG
 ---------
 
+##1.1.6
+#### Feature
+- added `dynamic_select` component, list values from other field in post or in options
+
 ##1.1.5
 #### Feature
 - Latest post component allow multiple post_type

composer.json

@@ -1,7 +1,7 @@
 {
   "name":"metabolism/acf-extensions",
-  "version": "1.1.5",
+  "version": "1.1.6",
   "type": "wordpress-plugin",
-  "description": "ACF Extensions plugin with component, components, hidden field ans latest posts field",
+  "description": "ACF Extensions plugin with component, components, hidden field, dynamic select and latest posts field",
   "license": "GPL-3.0-or-later"
 }

fields/class-acf-field-dynamic_select.php

@@ -0,0 +1,214 @@
+<?php
+
+if( ! class_exists('acf_field_dynamic_select_extension') ) :
+
+	class acf_field_dynamic_select_extension extends acf_field_select {
+
+		function render_field( $field ) {
+
+			// convert
+			$value = acf_get_array($field['value']);
+
+			$field_key = explode('.', $field['field_key']);
+
+			if( $field_key[0] == 'options'){
+
+				$other_field_values = get_field($field_key[1], 'options');
+				array_shift($field_key);
+			}
+			else{
+
+				$other_field_values = get_field($field_key[0]);
+			}
+
+			$choices = array();
+
+			if( count($field_key) == 2 ){
+
+				foreach ($other_field_values as $other_field_value){
+
+					$choice = $other_field_value[$field_key[1]]??'';
+
+					if( strlen($choice) )
+						$choices[] = $other_field_value[$field_key[1]];
+				}
+			}
+
+			// placeholder
+			if( empty($field['placeholder']) ) {
+				$field['placeholder'] = _x('Select', 'verb', 'acf');
+			}
+
+
+			// add empty value (allows '' to be selected)
+			if( empty($value) ) {
+				$value = array('');
+			}
+
+
+			// prepend empty choice
+			// - only for single selects
+			// - have tried array_merge but this causes keys to re-index if is numeric (post ID's)
+			if( $field['allow_null'] && !$field['multiple'] ) {
+				$choices = array( '' => "- {$field['placeholder']} -" ) + $choices;
+			}
+
+
+			// vars
+			$select = array(
+				'id'				=> $field['id'],
+				'class'				=> $field['class'],
+				'name'				=> $field['name'],
+				'data-ui'			=> $field['ui'],
+				'data-ajax'			=> $field['ajax'],
+				'data-multiple'		=> $field['multiple'],
+				'data-placeholder'	=> $field['placeholder'],
+				'data-allow_null'	=> $field['allow_null']
+			);
+
+
+			// multiple
+			if( $field['multiple'] ) {
+
+				$select['multiple'] = 'multiple';
+				$select['size'] = 5;
+				$select['name'] .= '[]';
+
+				// Reduce size to single line if UI.
+				if( $field['ui'] ) {
+					$select['size'] = 1;
+				}
+			}
+
+
+			// special atts
+			if( !empty($field['readonly']) ) $select['readonly'] = 'readonly';
+			if( !empty($field['disabled']) ) $select['disabled'] = 'disabled';
+			if( !empty($field['ajax_action']) ) $select['data-ajax_action'] = $field['ajax_action'];
+
+
+			// hidden input is needed to allow validation to see <select> element with no selected value
+			if( $field['multiple'] || $field['ui'] ) {
+				acf_hidden_input(array(
+					'id'	=> $field['id'] . '-input',
+					'name'	=> $field['name']
+				));
+			}
+
+
+			// append
+			$select['value'] = $value;
+			$select['choices'] = $choices;
+
+
+			// render
+			acf_select_input( $select );
+
+		}
+
+		/*
+		*  initialize
+		*
+		*  This function will setup the field type data
+		*
+		*  @type	function
+		*  @date	10/01/2019
+		*  @since	5.0.0
+		*
+		*  @param	n/a
+		*  @return	n/a
+		*/
+
+		function initialize() {
+
+			// vars
+			$this->name = 'dynamic_select';
+			$this->label = __("Dynamic select",'acf');
+			$this->category = 'choice';
+
+			$this->defaults = array(
+				'multiple' 		=> 0,
+				'allow_null' 	=> 0,
+				'choices'		=> array(),
+				'default_value'	=> '',
+				'ui'			=> 0,
+				'ajax'			=> 0,
+				'placeholder'	=> '',
+				'return_format'	=> 'value'
+			);
+		}
+
+
+		/*
+		*  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 ) {
+
+			// allow_null
+			acf_render_field_setting( $field, array(
+				'label'			=> __('Allow Null?','acf'),
+				'instructions'	=> '',
+				'name'			=> 'allow_null',
+				'type'			=> 'true_false',
+				'ui'			=> 1,
+			));
+
+			// multiple
+			acf_render_field_setting( $field, array(
+				'label'			=> __('Select multiple values?','acf'),
+				'instructions'	=> '',
+				'name'			=> 'multiple',
+				'type'			=> 'true_false',
+				'ui'			=> 1,
+			));
+
+
+			// ui
+			acf_render_field_setting( $field, array(
+				'label'			=> __('Stylised UI','acf'),
+				'instructions'	=> '',
+				'name'			=> 'ui',
+				'type'			=> 'true_false',
+				'ui'			=> 1,
+			));
+
+
+			// return_format
+			acf_render_field_setting( $field, array(
+				'label'			=> __('Return Format','acf'),
+				'instructions'	=> __('Specify the value returned','acf'),
+				'type'			=> 'select',
+				'name'			=> 'return_format',
+				'choices'		=> array(
+					'value'			=> __('Value','acf'),
+					'label'			=> __('Label','acf'),
+					'array'			=> __('Both (Array)','acf')
+				)
+			));
+
+
+			// max
+			acf_render_field_setting( $field, array(
+				'label'			=> __('Field key','acf'),
+				'instructions'	=> __('Specify field key using dot notation, max 2 levels, options supported','acf'),
+				'type'			=> 'text',
+				'placeholder'   => 'repeater.title or options.repeater.title',
+				'name'			=> 'field_key',
+			));
+
+		}
+	}
+
+	acf_register_field_type( 'acf_field_dynamic_select_extension' );
+
+endif; // class_exists check