Post Object field

assets/common.css

@@ -68,6 +68,7 @@
 .multi-language-field > fieldset,
 .multi-language-field .acf_wysiwyg,
 .multi-language-field .acf-url,
+.multi-language-field .acf-post-object,
 .multi-language-field .acf-editor-wrap,
 .multi-language-field .acf-file-uploader,
 .multi-language-field .acf-image-uploader { display: none }

src/acf_5/acf.php

@@ -29,6 +29,7 @@ public function __construct($plugin) {
 	public function include_fields() {
 		require_once ACF_QTRANSLATE_PLUGIN_DIR . 'src/acf_5/fields/file.php';
 		require_once ACF_QTRANSLATE_PLUGIN_DIR . 'src/acf_5/fields/image.php';
+		require_once ACF_QTRANSLATE_PLUGIN_DIR . 'src/acf_5/fields/post_object.php';
 		require_once ACF_QTRANSLATE_PLUGIN_DIR . 'src/acf_5/fields/text.php';
 		require_once ACF_QTRANSLATE_PLUGIN_DIR . 'src/acf_5/fields/textarea.php';
 		require_once ACF_QTRANSLATE_PLUGIN_DIR . 'src/acf_5/fields/wysiwyg.php';
@@ -40,6 +41,7 @@ public function include_fields() {
 		acf()->fields->register_field_type(new acf_qtranslate_acf_5_image($this->plugin));
 		acf()->fields->register_field_type(new acf_qtranslate_acf_5_file($this->plugin));
 		acf()->fields->register_field_type(new acf_qtranslate_acf_5_url($this->plugin));
+		acf()->fields->register_field_type(new acf_qtranslate_acf_5_post_object($this->plugin));
 	}
 
 	/**

src/acf_5/fields/post_object.php

@@ -0,0 +1,226 @@
+<?php
+
+class acf_qtranslate_acf_5_post_object extends acf_field_post_object {
+	/**
+	 * The plugin instance.
+	 * @var \acf_qtranslate_plugin
+	 */
+	protected $plugin;
+
+	function __construct($plugin) {
+		$this->plugin = $plugin;
+
+		if (version_compare($plugin->acf_version(), '5.6.0') < 0) {
+			$this->initialize();
+		}
+
+		acf_field::__construct();
+	}
+
+	function initialize() {
+		parent::initialize();
+		$this->name = 'qtranslate_post_object';
+		$this->category = 'qTranslate';
+	}
+
+	/*
+	 *  render_field()
+	 *
+	 *  Create the HTML interface for your field
+	 *
+	 *  @param	$field - an array holding all the field's data
+	 *
+	 *  @type	action
+	 *  @since	3.6
+	 *  @date	10/07/18
+	 */
+	function render_field($field) {
+		global $q_config;
+		$languages = qtrans_getSortedLanguages(true);
+		$values = $this->get_values($field['value']);
+		$currentLanguage = $this->plugin->get_active_language();
+
+		// vars
+		$o = array( 'type', 'id', 'class', 'name', 'value' );
+		$s = array( 'readonly', 'disabled' );
+		$e = '';
+
+		// populate atts
+		$atts = array();
+		foreach( $o as $k ) {
+			$atts[ $k ] = $field[ $k ];
+		}
+
+		// special atts
+		foreach( $s as $k ) {
+			if( isset($field[ $k ]) && $field[ $k ] ) {
+				$atts[ $k ] = $k;
+			}
+		}
+
+		echo '<div class="multi-language-field multi-language-field-post-object">';
+
+		foreach ($languages as $language) {
+			$class = 'wp-switch-editor';
+			if ($language === $currentLanguage) {
+				$class .= ' current-language';
+			}
+			echo '<a class="' . $class . '" data-language="' . $language . '">' . $q_config['language_name'][$language] . '</a>';
+		}
+
+		foreach ($languages as $language) {
+			// Change Field into a select
+			$field['type'] = 'select';
+			$field['ui'] = 1;
+			$field['ajax'] = 1;
+			$field['choices'] = array();
+			$field['name'] = $atts['name'] . "[$language]";
+			$field['value'] = @$values[$language];
+
+			$div = array(
+				'class' => 'acf-post-object acf-cf',
+				'data-language' => $language
+			);
+
+			if ($language === $currentLanguage) {
+				$div['class'] .= ' current-language';
+			} ?>
+
+			<div <?php acf_esc_attr_e( $div ); ?>><?php
+				// load posts
+				$posts = $this->get_posts( $values[$language], $field );
+
+				if( $posts ) {
+
+					foreach( array_keys($posts) as $i ) {
+
+						// vars
+						$post = acf_extract_var( $posts, $i );
+
+
+						// append to choices
+						$field['choices'][ $post->ID ] = $this->get_post_title( $post, $field );
+
+					}
+
+				}
+
+    			acf_render_field( $field ); ?>
+			</div><?php
+		}
+
+		echo '</div>';
+	}
+
+	function get_values($value) {
+		$languages = qtrans_getSortedLanguages(true);
+
+		// Protection for field type change
+		if (is_numeric($value)) {
+			$value = array_reduce($languages, function($acc, $language) use ($value) {
+				$acc[$language] = $value;
+				return $acc;
+			});
+		}
+
+		return $value;
+	}
+
+	function get_posts( $value, $field ) {
+
+		// bail early if no value
+		if( empty($value) ) return false;
+
+
+		if (!is_array($value)) {
+		    $value = [$value];
+        }
+
+		// get posts
+		$posts = acf_get_posts(array(
+			'post__in'	=> $value,
+			'post_type'	=> $field['post_type']
+		));
+
+
+		// return
+		return $posts;
+
+	}
+
+
+	function format_value( $value, $post_id, $field ) {
+		$currentLanguage = $this->plugin->get_active_language();
+
+		$value = $this->get_values($value);
+
+		// bail early if no value
+		if( empty($value) ) return false;
+
+
+		// load posts if needed
+		if( $field['return_format'] == 'object' ) {
+
+			$value = $this->get_posts( $value[$currentLanguage], $field );
+
+		}
+
+
+		// convert back from array if neccessary
+		if( !$field['multiple'] && acf_is_array($value) ) {
+
+			$value = current($value);
+
+		}
+
+
+		// return value
+		return $value;
+
+	}
+
+	function update_value( $value, $post_id, $field ) {
+
+		// validate
+		if( empty($value) ) {
+
+			return $value;
+
+		}
+
+		$languages = qtrans_getSortedLanguages(true);
+
+		foreach ($languages as $language) {
+			// format
+			if ( is_array( $value[$language] ) ) {
+
+				// array
+				foreach ( $value[$language] as $k => $v ) {
+
+					// object?
+					if ( is_object( $v ) && isset( $v->ID ) ) {
+
+						$value[$language][ $k ] = $v->ID;
+
+					}
+
+				}
+
+
+				// save value as strings, so we can clearly search for them in SQL LIKE statements
+				$value[$language] = array_map( 'strval', $value[$language] );
+
+			} elseif ( is_object( $value[$language] ) && isset( $value[$language]->ID ) ) {
+
+				// object
+				$value[$language] = $value[$language]->ID;
+
+			}
+		}
+
+
+		// return
+		return $value;
+
+	}
+}