Examples of how to dynamically populate an ACF select list

wp_acf_dynamicallyPopulateSelect_1of2.php

<?php
/*
 * In this example, we will load a textarea field from the options page (textarea field is called my_select_values) 
 * and use the text on each line as a option for the select field’s choices. The select field in this example has a name of “color”.
 * Note: This is example 1 of 2
 *
 * Source: http://www.advancedcustomfields.com/resources/dynamically-populate-a-select-fields-choices/
 *
 * Add to your functions.php
 */

function acf_load_color_field_choices( $field ) {
    
    // reset choices
    $field['choices'] = array();
    
    
    // get the textarea value from options page without any formatting
    $choices = get_field('my_select_values', 'option', false);

    
    // explode the value so that each line is a new array piece
    $choices = explode("\n", $choices);

    
    // remove any unwanted white space
    $choices = array_map('trim', $choices);

    
    // loop through array and add to field 'choices'
    if( is_array($choices) ) {
        
        foreach( $choices as $choice ) {
            
            $field['choices'][ $choice ] = $choice;
            
        }
        
    }
    

    // return the field
    return $field;
    
}

add_filter('acf/load_field/name=color', 'acf_load_color_field_choices');

?>

wp_acf_dynamicallyPopulateSelect_2of2.php

<?php 
/*
 * In this example, we will load a repeater field from the options page (repeater field is called my_select_values) 
 * and use the sub fields value and label as the options for the select field’s choices. The select field in this 
 * example has a name of “color”.
 *
 * Note: This is example 2 of 2
 *
 * Source: http://www.advancedcustomfields.com/resources/dynamically-populate-a-select-fields-choices/
 *
 * Add to your functions.php
 */

function acf_load_color_field_choices( $field ) {
    
    // reset choices
    $field['choices'] = array();


    // if has rows
    if( have_rows('my_select_values', 'option') ) {
        
        // while has rows
        while( have_rows('my_select_values', 'option') ) {
            
            // instantiate row
            the_row();
            
            
            // vars
            $value = get_sub_field('value');
            $label = get_sub_field('label');

            
            // append to choices
            $field['choices'][ $value ] = $label;
            
        }
        
    }


    // return the field
    return $field;
    
}

add_filter('acf/load_field/name=color', 'acf_load_color_field_choices');

?>

wp_acf_populateSelectWithPostType.php

<?php 
/*
 * In this example, we populate an acf field (sample_field) with post types (sample_post_type)
 *
 * Source: https://www.weareconvoy.com/2014/01/populating-acf-select-fields-with-post-type-values/
 *
 * Add to your functions.php
 */

// populate acf field (sample_field) with post types (sample_post_type)

function acf_load_sample_field( $field ) {
   $field['choices'] = get_post_type_values( 'sample_post_type' );
    return $field;
}
add_filter( 'acf/load_field/name=sample_field', 'acf_load_sample_field' );

function get_post_type_values( $post_type ) {
    $values = array();
    $defaults = array(
                        'post_type' => $post_type,
                        'post_status' => 'publish',
                        'posts_per_page' => -1,
                        'orderby' => 'title',
                        'order' => 'ASC'
                    );
    $query = new WP_Query( $defaults );
    if ( $query->found_posts > 0 ) {
        foreach ( $query->posts as $post ) {
          $values[get_the_title( $post->ID )] = get_the_title( $post->ID );
        }
    }
    return $values;
}

?>

How do you do this is a standard template? I don't want to do this from the functions.php or plugin.

Any help would be greatly appreciated.

add_filter is not working

offers_menu is a repeater text field and offers_submenu is radio button. values in the text field are not showing in the radio button choice field.

``function submenu_choices( $field ) {

// reset choices
$field['choices'] = array();

// $field->add_setting(  array(
//     'default'   => '',
//     'transport' => 'refresh',
// ) );
// if has rows
if( have_rows('offers_menu', 'option') ) {
    
    // while has rows
    while( have_rows('offers_menu', 'option') ) {
        
        // instantiate row
        the_row();
        
        
        // vars
        $value = get_sub_field('menu');
        // $label = get_sub_field('label');

        
        // append to choices
     
        $field['choices'][ $value ] = $value;
        
    }
    
}


// return the field
return $field;

}

add_filter('acf/load_field/key=field_5d9c5ebdf4383', 'submenu_choices');

Hello this is a nice example but I have a question.
How will you make it if you have a repeater and within it a select and another repeater each ?