Contact Form 7 Text Field Validation

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3 years ago

Contact Form 7 text field validation filter hooks details. We can modify the validation function by wpcf7_validate_text filter.

The wpcs_custom_validation_filter hook will run during submission time. The $result is WPCF7_Validation object. It has invalidate method. The invalidate method will store invalid fields when we call invalidate method.

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The wpcf7_validate_text Filter

The Contact Form 7 text field validation filter hook example. This example will check exists number in text fields. This code returns an error message Sorry… Number exists.. if a number exists in text fields.

add_filter( 'wpcf7_validate_text', 'wpcs_custom_validation_filter', 10, 2 );
add_filter( 'wpcf7_validate_text*', 'wpcs_custom_validation_filter', 10, 2 );

function wpcs_custom_validation_filter( $result, $tag ) {
	$name = $tag->name;

	$value = isset( $_POST[$name] )
		? trim( wp_unslash( strtr( (string) $_POST[$name], "\n", " " ) ) )
		: '';

	if ( 'text' == $tag->basetype ) {
		if ( preg_match('/\d/', $value ) ) {
			$result->invalidate( $tag, 'Sorry... Number exists..' );
//$result->invalidate( $tag, wpcf7_get_message( 'invalid_wpcs_custom_error' ) );
		}
	}
    return $result;
}

add_filter( 'wpcf7_validate_text', 'wpcs_custom_validation_filter', 10, 2 );

add_filter( 'wpcf7_validate_text*', 'wpcs_custom_validation_filter', 10, 2 );

function wpcs_custom_validation_filter( $result, $tag ) {

$name = $tag->name;

$value = isset( $_POST[$name] )

? trim( wp_unslash( strtr( (string) $_POST[$name], "\n", " " ) ) )

: '';

if ( 'text' == $tag->basetype ) {

if ( preg_match('/\d/', $value ) ) {

$result->invalidate( $tag, 'Sorry... Number exists..' );

//$result->invalidate( $tag, wpcf7_get_message( 'invalid_wpcs_custom_error' ) );

}

return $result;

}

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How to Change Custom Error Message From WP-Admin?

We need to hook wpcf7_messages by filter hooks.

add_filter( 'wpcf7_messages', 'wpcf7_telephone_messages' );

function wpcf7_telephone_messages( $messages ) {
	return array_merge( $messages, array(
		'invalid_wpcs_custom_error' => array(
			'description' => __( "Text field contain number", 'wpcs-plugin' ),
			'default' => __( "Sorry... Number exists..", 'wpcs-plugin' )
		)
	) );
    return $messages;
}

add_filter( 'wpcf7_messages', 'wpcf7_telephone_messages' );

function wpcf7_telephone_messages( $messages ) {

return array_merge( $messages, array(

'invalid_wpcs_custom_error' => array(

'description' => __( "Text field contain number", 'wpcs-plugin' ),

'default' => __( "Sorry... Number exists..", 'wpcs-plugin' )

)

) );

return $messages;

}

Add $result->invalidate( $tag, wpcf7_get_message( 'invalid_wpcs_custom_error' ) ); in wpcs_custom_validation_filter function. Then go to wp-admin > contact form 7 > messages.

How to Save Data to MySQL Database?

We can save submission data by CFDB7 or CF7ADB plugin.

We can save the submission to a separate table and column automatically by the CF7ADB plugin.

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