Reply To: Validate value

• Steve

• August 20, 2019 at 2:20 am

First of all John, thank you so much for your time! I really appreciate it.

To demonstrate my issue I created a simple, to the point single file plugin that demonstrates my issue. With this, when I enter the term ‘testing’ into the ACF field on the ‘ACF ValidationTest’ plugin setting page it will failed validation and I’ll get a separate page that will display the validation message “testing is not allowed”.

Hope this helps.

<?php

/**
 * @wordpress-plugin
 * Plugin Name:       ACF Validation Test
 * Description:       ACF Test
 * Version:           1.0.0
 * Author:            Steve
 * License:           GPL-2.0+
 * License URI:       http://www.gnu.org/licenses/gpl-2.0.txt
 */

// define ACF group
setup_options();

// Add ACF form head
add_action( 'admin_init', 'add_acf_variables' );

// Create plugin setting page
add_action( 'admin_menu', 'sitepoint_settings_page' );

// Listen for 'input_test' form submit
add_filter('acf/validate_value/name=input_test', 'test_validate_function', 10, 4);

function sitepoint_settings_page() {
    add_menu_page( 'ACF Validation Test', 'ACF Validation Test', 'manage_options', 'acf-validation', 'plugin_settings_page_content' );
}

function test_validate_function( $valid, $value, $field, $input ) {
	
	// bail early if value is already invalid
	if ( !$valid ) return $valid;

	if ($value == 'testing') {
		$valid = "testing is not allowed";
	}

	return $valid;
}

function add_acf_variables() {
    acf_form_head();
}

function plugin_settings_page_content() {
	do_action('acf/input/admin_head'); // Add ACF admin head hooks
    do_action('acf/input/admin_enqueue_scripts'); // Add ACF scripts

	echo "<h1>ACF Validation Test</h1>";

    $options = array(
        'id' => 'acf-form',
        'post_id' => 'options',
        'new_post' => false,
        'field_groups' => array( 'group_5d5ac7f764f02' ),
        'return' => admin_url('admin.php?page=acf-validation'),
        'submit_value' => 'Update',
    );
    acf_form( $options );
}

function setup_options() {
    if( function_exists('acf_add_local_field_group') ):

	acf_add_local_field_group(array(
		'key' => 'group_5d5ac7f764f02',
		'title' => 'acf test',
		'fields' => array(
			array(
				'key' => 'field_5d5ac7fd07396',
				'label' => 'input_test',
				'name' => 'input_test',
				'type' => 'text',
				'instructions' => "if defined as 'testing' then validation will fail.",
				'required' => 0,
				'conditional_logic' => 0,
				'wrapper' => array(
					'width' => '',
					'class' => '',
					'id' => '',
				),
				'default_value' => "",
				'placeholder' => '',
				'prepend' => '',
				'append' => '',
				'maxlength' => '',
			),
		),
		'location' => array(
			array(
				array(
					'param' => 'post_type',
					'operator' => '==',
					'value' => 'post',
				),
			),
		),
		'menu_order' => 0,
		'position' => 'normal',
		'style' => 'default',
		'label_placement' => 'top',
		'instruction_placement' => 'label',
		'hide_on_screen' => '',
		'active' => true,
		'description' => '',
	));

	endif;
}