Have input name field to accept only alaphabets

Hi @vijalesh

I hope you’re well today!

Out of the box those fields would accept also digits and special characters but you can use this custom code to restrict them to letters only:

<?php
add_filter(
	'forminator_custom_form_submit_errors',
	function( $submit_errors, $form_id, $field_data_array ) {
		$field_name = 'name-1';
		$submitted_fields = wp_list_pluck( $field_data_array, 'value', 'name' );

		if( !preg_match( '/^[a-z]+$/i', $submitted_fields[ $field_name ] ) ) {
			$submit_errors[][ $field_name ] = __( 'There is something wrong ' );
		}

		return $submit_errors;
	},
	10, 
	3
);

In this line you would need to replace the “name-1” with the ID of the fiedl you want to check (if different than “name-1”) and then:

– create an empty file with a .php extension (e.g. “forminator-field-characters-only.php”)

– paste code into it

– save the file and upload it to the “/wp-content/mu-plugins” folder of your site’s WordPress installation.

Best regards,
Adam

Hi thanks for this .. and if there is more than one field on the same form, i will have to copy this functions that many number of times ? and change the name-1 to name-2 name-3 etc ? right ?

Hi @vijalesh

Thanks for response!

I have modified the code slightly so it should now work with multiple fields. Here is a new version of the code:

<?php
add_filter(
	'forminator_custom_form_submit_errors',
	function( $submit_errors, $form_id, $field_data_array ) {
				
		$fields_names = array( 'name-1', 'name-2' ); // comma separated list of fields
		
		$submitted_fields = wp_list_pluck( $field_data_array, 'value', 'name' );
		
		foreach ( $fields_names as $key=>$field_name ) {

			if( !preg_match( '/^[a-z]+$/i', $submitted_fields[ $field_name ] ) ) {
				$submit_errors[][ $field_name ] = __( 'There is something wrong ' );
			}
			
		}		
		

		return $submit_errors;
	},
	10, 
	3
);

You just need to list your fields in this line (following example):

$fields_names = array( 'name-1', 'name-2' ); // comma separated list of fields

Best regards,
Adam

This is good thanks or the solutions