acf-dynamic-flexible-content-filter.php

<?php
add_filter('acf/load_field/type=flexible_content', 'hwk_acf_flexible_filter');
function hwk_acf_flexible_filter($field){
    
    if(!is_admin() || wp_doing_ajax() || get_post_type() == 'acf-field-group')
		return $field;
    
    $parent = _acf_get_field_group_by_key($field['parent']);
    if(!isset($parent['hwk_flexible_dynamique']) || empty($parent['hwk_flexible_dynamique']))
        return $field;
    
    $parent_name = str_replace('-', '_', sanitize_title($parent['title']));
    
    $match = array();
    foreach(hwk_acf_get_layouts($field['name']) as $group_key){
        $group = _acf_get_field_group_by_key($group_key);
        $name = str_replace('-', '_', sanitize_title($group['title']));
        $match['layouts'][] = 'field_hwk_layout_' . $name . '_' . $parent_name;
        $match['groups'][]  = $group;
    }
    
    if(!empty($match['layouts'])){
        foreach($field['layouts'] as $k => $layout){
            if(!in_array($layout['key'], $match['layouts']))
                unset($field['layouts'][$k]);
        }
    }
    
    if(empty($match['layouts']))
        $field['layouts'] = array();
    
    if(!empty($match['groups'])){
        
        global $post, $pagenow, $typenow, $plugin_page;
        $filters = array();
        
        if(($pagenow === 'post.php' || $pagenow === 'post-new.php') && $typenow !== 'acf'){
            $filters['post_id'] = $post->ID;
            $filters['post_type'] = $typenow;
        
        }elseif($pagenow === 'admin.php' && isset($plugin_page) && acf_get_options_page($plugin_page)){
            $filters['post_id'] = acf_get_valid_post_id('options');
        
        }elseif(($pagenow === 'edit-tags.php' || $pagenow === 'term.php') && isset($_GET['taxonomy'])){
            $filters['taxonomy'] = filter_var($_GET['taxonomy'], FILTER_SANITIZE_STRING);
        
        }elseif($pagenow === 'profile.php'){
            $filters['user_id'] = get_current_user_id();
            $filters['user_form'] = 'edit';
        
        }elseif($pagenow === 'user-edit.php' && isset($_GET['user_id'])){
            $filters['user_id'] = filter_var($_GET['user_id'], FILTER_SANITIZE_NUMBER_INT);
            $filters['user_form'] = 'edit';
        
        }elseif($pagenow === 'user-new.php'){
            $filters['user_id'] = 'new';
            $filters['user_form'] = 'edit';
        
        }elseif($pagenow === 'media.php' || $pagenow === 'upload.php'){
            $filters['attachment'] = 'All';
        
        }elseif(acf_is_screen('widgets') || acf_is_screen('customize')){
            $filters['widget'] = 'all';
        }
        
        foreach($match['groups'] as $group){
            $name = str_replace('-', '_', sanitize_title($group['title']));
            
            $screen = acf_get_location_screen($filters, $group);
            $match_or = array();
            foreach($group['location'] as $location => $rule){
                if(empty($rule))
                    continue;
                
                $match_and = true;
                foreach($rule as $rule_id => $val){
                    if( !acf_match_location_rule($val, $screen) || ($val['param'] == 'hwk_flexible_content_rule' && $val['value'] != $field['name']) ){
                        $match_and = false;
                        break;
                    }
                }
                $match_or[] = $match_and;
            }
            
            $cancel = false;
            foreach($match_or as $and){
                if($and === true){
                    $cancel = true;
                    break;
                }
            }
            
            if(!$cancel){
                foreach($field['layouts'] as $k => $layout){
                    if($layout['key'] == 'field_hwk_layout_' . $name . '_' . $parent_name)
                        unset($field['layouts'][$k]);
                }
                
            }
        }
    }
    
    if(empty($field['layouts']))
        $field = array(
            'key'       => '',
            'ID'        => '',
            'type'      => '',
            'value'     => '',
            'name'      => 'hwk_hidden_parent',
            '_name'     => '',
            'class'     => 'acf-hidden',
            'wrapper'   => array(
                'class' => 'acf-hidden'
            )
        );

    return $field;
}