silverstripe-reports/code/Newsletter/Unsubscribe.php

179 lines
6.2 KiB
PHP
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<?php
/**
* Create a form that a user can use to unsubscribe from a mailing list
*/
class Unsubscribe_Controller extends Page_Controller {
function __construct($data = null) {
}
function RelativeLink($action = null) {
return "unsubscribe/$action";
}
function index() {
Session::clear("loggedInAs");
Requirements::css(project()."/css/form.css");
// if the email address is given
$emailAddress = addslashes( $this->urlParams['Email'] );
$mailingListID = addslashes( $this->urlParams['MailingList'] );
if(is_numeric($mailingListID)) {
$mailingList = DataObject::get_by_id("NewsletterType", $mailingListID);
}
// try to find the user
if($emailAddress)
$member = DataObject::get_one( 'Member', "`Email`='$emailAddress'" );
// if the email address and mailing list is given in the URL and both are valid,
// then unsubscribe the user
if( $member && $mailingList && $member->inGroup( $mailingList->GroupID ) ) {
$this->unsubscribeFromList( $member, $mailingList );
$url = "unsubscribe"."/done/".$member->Email."/".$mailingList->Title;
Director::redirect($url);
} elseif( $member ) {
$listForm = $this->MailingListForm( $member );
} else {
$listForm = $this->EmailAddressForm();
}
if($this->urlParams['Email'] == "done")
$listForm->sessionMessage("Thank you. You have been removed from the selected groups", "good");
return $this->customise( array( 'Content' => $listForm->forTemplate() ) )->renderWith('Page');
}
/**
* Display a form with all the mailing lists that the user is subscribed to
*/
function MailingListForm( $member = null ) {
$email = $this->urlParams['Email'];
return new Unsubscribe_MailingListForm($this, 'MailingListForm', $member, $email);
}
/**
* Display a form allowing the user to input their email address
*/
function EmailAddressForm() {
return new Unsubscribe_EmailAddressForm( $this, 'EmailAddressForm' );
}
/**
* Show the lists for the user with the given email address
*/
function showlists( $data, $form ) {
$member = DataObject::get_one( 'Member', "`Email`='{$data['Email']}'" );
$mailingListForm = new Unsubscribe_MailingListForm( $this, 'MailingListForm', $member, $data['Email']);
return $this->customise( array( 'Content' => $mailingListForm->forTemplate() ) )->renderWith('Page');
}
/**
* Unsubscribe the user from the given lists.
*/
function unsubscribe($data, $form) {
$email = $this->urlParams['Email'];
$member = DataObject::get_one( 'Member', "`Email`='$email'" );
if(!$member){
$member = DataObject::get_one('Member', "`EmailAddress` = '$email'");
}
if( $data['MailingLists'] ) {
foreach( array_keys( $data['MailingLists'] ) as $listID ){
$nlType = DataObject::get_by_id( 'NewsletterType', $listID );
$nlTypeTitles[]= $nlType->Title;
$this->unsubscribeFromList( $member, DataObject::get_by_id( 'NewsletterType', $listID ) );
}
$sORp = (sizeof($nlTypeTitles)>1)?"newsletters ":"newsletter ";
//means single or plural
$nlTypeTitles = $sORp.implode(", ", $nlTypeTitles);
$url = "unsubscribe/done/".$member->Email."/".$nlTypeTitles;
Director::redirect($url);
} else {
$form->addErrorMessage('MailingLists', 'You need to select at least one mailing list to unsubscribe from.', 'bad');
Director::redirectBack();
}
}
protected function unsubscribeFromList( $member, $list ) {
// track unsubscriptions
$member->Groups()->remove( $list->GroupID );
}
}
class Unsubscribe_MailingListForm extends Form {
protected $memberEmail;
function __construct( $controller, $name, $member, $email ) {
$this->memberEmail = $member->Email;
$fields = new FieldSet();
$actions = new FieldSet();
// get all the mailing lists for this user
$lists = $this->getMailingLists( $member );
if( $lists ) {
$fields->push( new LabelField( 'You are subscribed to the following lists:' ) );
foreach( $lists as $list ) {
$fields->push( new CheckboxField( "MailingLists[{$list->ID}]", $list->Title ) );
}
$actions->push( new FormAction('unsubscribe', 'Unsubscribe' ) );
} else {
$fields->push( new LabelField( "I'm sorry, but $email doesn't appear to be in any of our mailing lists." ) );
}
parent::__construct( $controller, $name, $fields, $actions );
}
function FormAction() {
return $this->controller->Link() . "{$this->memberEmail}?executeForm=" . $this->name;
}
protected function getMailingLists( $member ) {
// get all the newsletter types that the member is subscribed to
return DataObject::get( 'NewsletterType', "`MemberID`='{$member->ID}'", null, "LEFT JOIN `Group_Members` USING(`GroupID`)" );
}
}
class Unsubscribe_EmailAddressForm extends Form {
function __construct( $controller, $name ) {
$fields = new FieldSet(
new EmailField( 'Email', 'Email address' )
);
$actions = new FieldSet(
new FormAction( 'showlists', 'Show lists' )
);
parent::__construct( $controller, $name, $fields, $actions );
}
function FormAction() {
return parent::FormAction() . ( $_REQUEST['showqueries'] ? '&showqueries=1' : '' );
}
}
class Unsubscribe_Successful extends Form {
function __construct($controller, $name){
$fields = new FieldSet();
$actions = new FieldSet();
parent::__construct($controller, $name, $fields, $actions);
}
function setSuccessfulMessage($email, $newsletterTypes) {
Requirements::css(project() . "/css/form.css");
$this->setMessage("Thank you. $email will no longer receive the $newsletterTypes.", "good");
}
}
?>