Populate Gravity Forms dropdown field with Advanced Custom Fields repeater values.

Advanced Custom Fields repeater values to a Gravity Forms dropdown field.md

Add Advanced Custom Fields repeater values to a Gravity Forms dropdown field

The code should be added in a separate file and then included in your functions.php using require.

Replace 1 from the code with the ID of the form that you want to dinamically populate with field values from ACF. You can find more info about the filters in the Gravity Forms documentation.

add_filter( 'gform_pre_render_1', 'populate_dropdown' );
add_filter( 'gform_pre_validation_1', 'populate_dropdown' );
add_filter( 'gform_admin_pre_render_1', 'populate_dropdown' );
add_filter( 'gform_pre_submission_filter_1', 'populate_dropdown' );

if ( $form['id'] != 1 ) {
   return $form;
}

if ( $field->id == 1 ) {
    $field->choices = $dropdownitems;
}

gravity-forms-dropdown-acf-values.php

<?php

if ( !is_admin() ) {
  add_filter( 'gform_pre_render_1', 'populate_dropdown' );
  add_filter( 'gform_pre_validation_1', 'populate_dropdown' );
  add_filter( 'gform_admin_pre_render_1', 'populate_dropdown' );
  add_filter( 'gform_pre_submission_filter_1', 'populate_dropdown' );

  function populate_dropdown( $form ) {
    if ( $form['id'] != 1 ) {
       return $form;
    }

    $acf_repeater = get_field( 'repeater_field' );

    // declare the array
    $dropdownitems = array();

    // add first & default value of the dropdown
    $dropdownitems[] = array(
      'text' => 'Default value of dropdown',
      'value' => ''
    );

    foreach ($acf_repeater as $acf_repeater_subfield) {
      $dropdownitems[] = array(
        'value' => $acf_repeater_subfield['subfield_name'],
        'text' => $acf_repeater_subfield['subfield_name']
      );
    }

    //Add repeater values as dropdown options
    foreach ( $form['fields'] as &$field ) {
      if ( $field->id == 1 ) {
        $field->choices = $dropdownitems;
      }
    }

    return $form;
    wp_reset_postdata();
  }
}

Hello @cristacheda , thanks for your reply
yes yes this is work , but need to add this line before the modified code

$terms = get_the_terms( $post->ID, 'taxonomy_name' );

// Loop through objects
   foreach ($terms as $term) {
     $dropdownitems[] = array(
       'value' => $term->id,
       'text' => $term->name
     );
   }

Thanks again for your reply boss :)

hey, @cristacheda a very useful code!

// add first & default value of the dropdown
$dropdownitems[] = array(
  'text' => 'Default value of dropdown',
  'value' => ''
);

These lines are safe to remove if you don't want to add any initial default value.