RCP: custom number field

rcp-custom-field-number.php

<?php
/**
 * Example for adding a custom number field to the
 * Restrict Content Pro registration form and profile editors.
 */

/**
 * Adds a custom number field to the registration form and profile editor.
 */
function ag_rcp_add_number_field() {

    $age = get_user_meta( get_current_user_id(), 'rcp_age', true );
    ?>
    <p>
        <label for="rcp_age"><?php _e( 'Your Age', 'rcp' ); ?></label>
        <input type="number" id="rcp_age" name="rcp_age" value="<?php echo esc_attr( $age ); ?>"/>
    </p>

    <?php
}

add_action( 'rcp_after_password_registration_field', 'ag_rcp_add_number_field' );
add_action( 'rcp_profile_editor_after', 'ag_rcp_add_number_field' );

/**
 * Adds the custom number field to the member edit screen.
 */
function ag_rcp_add_number_member_edit_field( $user_id = 0 ) {

    $age = get_user_meta( $user_id, 'rcp_age', true );
    ?>
    <tr valign="top">
        <th scope="row" valign="top">
            <label for="rcp_age"><?php _e( 'Age', 'rcp' ); ?></label>
        </th>
        <td>
            <input type="number" id="rcp_age" name="rcp_age" value="<?php echo esc_attr( $age ); ?>"/>
        </td>
    </tr>
    <?php
}

add_action( 'rcp_edit_member_after', 'ag_rcp_add_number_member_edit_field' );

/**
 * Determines if there are problems with the registration data submitted.
 */
function ag_rcp_validate_number_on_register( $posted ) {

    if ( is_user_logged_in() ) {
        return;
    }

    // Remove this segment if you don't want the number field to be required.
    if ( empty( $posted['rcp_age'] ) ) {
        rcp_errors()->add( 'missing_age', __( 'Please enter your age', 'rcp' ), 'register' );
        
        return;
    }
    
    // This throws an error if the value is not an number.
    if ( ! is_numeric( $posted['rcp_age'] ) ) {
        rcp_errors()->add( 'invalid_age', __( 'Please enter a valid age', 'rcp' ), 'register' );
    }

}

add_action( 'rcp_form_errors', 'ag_rcp_validate_number_on_register', 10 );

/**
 * Stores the information submitted during registration.
 * We're using `absint()` to make sure the number is a positive integer. If you want
 * to allow for negative numbers too, you can use `intval()` instead.
 */
function ag_rcp_save_number_field_on_register( $posted, $user_id ) {

    if ( ! empty( $posted['rcp_age'] ) ) {
        update_user_meta( $user_id, 'rcp_age', absint( $posted['rcp_age'] ) );
    }

}

add_action( 'rcp_form_processing', 'ag_rcp_save_number_field_on_register', 10, 2 );

/**
 * Stores the information submitted during profile update.
 * We're using `absint()` to make sure the number is a positive integer. If you want
 * to allow for negative numbers too, you can use `intval()` instead.
 */
function ag_rcp_save_number_field_on_profile_save( $user_id ) {

    if ( ! empty( $_POST['rcp_age'] ) ) {
        update_user_meta( $user_id, 'rcp_age', absint( $_POST['rcp_age'] ) );
    }

}

add_action( 'rcp_user_profile_updated', 'ag_rcp_save_number_field_on_profile_save', 10 );
add_action( 'rcp_edit_member', 'ag_rcp_save_number_field_on_profile_save', 10 );