apply words limit to profile fields on signup form and profile edit form

xprofile-field-words-limit.php

<?php


/**
 * Retrieves words threshold value based on field id.
 *
 * @param int $field_id Field id.
 *
 * @return int|null
 */
function buddydev_get_words_threshold_value( int $field_id ) {

	// Field id with no. of words limit. Replace with yours.
	$field_thresholds = array(
		//	1 => 10,
		//	2 => 20,
		6 => 30,
	);

	return isset( $field_thresholds[ $field_id ] ) ? $field_thresholds[ $field_id ] : null;
}

/**
 * Checks if field's data reached their words limit or not.
 *
 * @param int $field_id      Field id.
 * @param string $field_data Field data.
 *
 * @return bool
 */
function buddydev_has_reached_words_threshold_value( int $field_id, string $field_data, int $field_threshold_value ) {

	if ( strlen( trim( $field_data ) ) > $field_threshold_value ) {
		return true;
	}

	return false;
}

add_action( 'bp_signup_validate', function () {
	if ( ! bp_is_post_request() || ! bp_is_active( 'xprofile' ) || empty( $_POST['signup_profile_field_ids'] ) ) {
		return;
	}

	$profile_field_ids = explode( ',', $_POST['signup_profile_field_ids'] );

	foreach ( (array) $profile_field_ids as $field_id ) {
		$field = xprofile_get_field( $field_id );

		if ( ! $field || empty( $_POST[ 'field_' . $field_id ] ) ) {
			continue;
		}

		$threshold_value = buddydev_get_words_threshold_value( $field_id );
		$field_data      = $threshold_value ? trim( (string) $_POST[ 'field_' . $field_id ] ) : '';

		if ( $field_data && buddydev_has_reached_words_threshold_value( $field_id, $field_data, $threshold_value ) ) {
			buddypress()->signup->errors[ 'field_' . $field_id ] = sprintf( 'Number of words limit exceeded then field allowed limit which is %d words.', $threshold_value );
		}
	}
} );

add_action( 'bp_actions', function () {

	if ( ! bp_is_post_request() || ! bp_is_my_profile() || ! bp_is_profile_component() ) {
		return;
	}

	// Make sure a group is set.
	if ( ! bp_action_variable( 1 ) || ! isset( $_POST['field_ids'] ) ) {
		return;
	}

	// Check the field group exists.
	if ( ! bp_is_action_variable( 'group' ) || ! xprofile_get_field_group( bp_action_variable( 1 ) ) ) {
		return;
	}

	check_admin_referer( 'bp_xprofile_edit' );

	// No errors.
	$field_ids   = wp_parse_id_list( $_POST['field_ids'] );

	// Check to see if any new information has been submitted.
	$error       = false;
	$field_names = array();
	foreach ( $field_ids as $field_id ) {
		$field = xprofile_get_field( $field_id );

		if ( ! $field || empty( $_POST[ 'field_' . $field_id ] ) ) {
			continue;
		}

		$threshold_value = buddydev_get_words_threshold_value( $field_id );
		$field_data      = $threshold_value ? trim( (string) $_POST[ 'field_' . $field_id ] ) : '';

		if ( $field_data && buddydev_has_reached_words_threshold_value( $field_id, $field_data, $threshold_value ) ) {
			$error         = true;
			$field_names[] = apply_filters( 'bp_get_the_profile_field_name', $field->name );
		}
	}

	if ( $error ) {
		$field_names = join( ',', $field_names );
		$message = sprintf( 'Words limit exceeded for %s.', $field_names );

		bp_core_add_message( $message, 'error' );

		if ( function_exists( 'bp_displayed_user_url' ) ) {
			$path_chunks = array( bp_get_profile_slug(), 'edit' );
			$path_chunks[] = array( 'group', bp_action_variable( 1 ) );

			$redirect_url = bp_displayed_user_url( bp_members_get_path_chunks( $path_chunks ) );
		} else {
			$redirect_url = bp_core_get_user_domain( bp_displayed_user_id() );
			$profile_slug = bp_get_profile_slug();
			$group_id     = bp_action_variable( 1 );
			$redirect_url = trailingslashit( $redirect_url . "{$profile_slug}/edit/group/{$group_id}/" );
		}

		bp_core_redirect( $redirect_url );
	}
}, 5 );

add_filter( 'bp_get_the_profile_field_description', function ( $description ) {
	$threshold_value = buddydev_get_words_threshold_value( bp_get_the_profile_field_id() );

	if ( $threshold_value ) {
		$description .= '&nbsp;' . sprintf( 'This Field words limit is: %s', $threshold_value );
	}

	return $description;
} );