Plurilization and attendees list for events pages

pageregistrations__config.php

<?php

pageregistrations_code_extensions_RegistrationExtension.php

<?php
class RegistrationExtension extends DataExtension {
    private static $db = array(
        'EnableRegistrations' => 'Boolean',
        'MaxRegistrations' => 'Int'
    );
    private static $has_many = array(
        'Registrations' => 'Registration'
    );
    public function updateSettingsFields( FieldList $fields ) {
        $fields->addFieldToTab(
            'Root.Registrations',
            TextField::create('MaxRegistrations', 'Maximum registrations?')
        );
        $fields->addFieldToTab(
            'Root.Registrations',
            FieldGroup::create(
                CheckboxField::create('EnableRegistrations', 'Allow registrations for this event')
            )->setTitle('Enable')
        );
    }
    public function updateCMSFields( FieldList $fields ) {
        if ($this->owner->EnableRegistrations) {
            $fields->addFieldToTab(
                'Root.Registrations',
                GridField::create(
                    'Registrations',
                    'Registrations',
                    $this->owner->Registrations(),
                    GridFieldConfig_RecordEditor::create()
                )
            );
        }
    }
}

class RegistrationControllerExtension extends DataExtension {
    private static $allowed_actions = array('RegistrationForm');

    public function RegistrationForm(){
        $fields = FieldList::create(
            TextField::create('Name'),
            TextField::create('Organisation'),
            EmailField::create('Email')
        );
        $actions = FieldList::create(
            FormAction::create('doRegister', 'Send Registration')
        );
        $validator = RequiredFields::create(array('Name','Email'));
        $form = Form::create($this->owner, 'RegistrationForm', $fields, $actions, $validator);
        return $form;
    }

    public function doRegister($data, Form $form){
        if ($this->SpacesAvailable()) {
            $registration = Registration::create();
            $form->saveInto($registration);
            $registration->PageID = $this->owner->ID;
            $registration->write();
            $form->sessionMessage('Thanks for registering', 'good');
        } else {
            $form->sessionMessage('Registrations are full', 'warning');
        }
        $this->owner->redirectBack();
    }
    public function SpacesAvailable(){
        $registrations = Registration::get()
            ->filter('PageID', $this->owner->ID)
            ->exclude('Status', 'Applied')
            ->count();
        $spacesleft = (int)($this->owner->MaxRegistrations - $registrations);

        return ($spacesleft > 0) ? $spacesleft : 0;
    }
    public function RegisteredPeeps(){
        $registrations = Registration::get()
            ->filter('PageID', $this->owner->ID)
            ->exclude('Status', 'Applied');

        return $registrations;
    }
}

pageregistrations_code_model_Registration.php

<?php
class Registration extends DataObject {
    private static $db = array(
        'Name' => 'Varchar(255)',
        'Organisation' => 'Varchar(255)',
        'Email' => 'Varchar(255)',
        'Status' => 'Enum("Applied, Confirmed", "Applied")'
    );
    private static $has_one = array(
        'Page' => 'Page'
    );
    private static $summary_fields = array(
        'Name',
        'Organisation',
        'Email',
        'Status'
    );
    public function onAfterWrite(){
        if($this->Status == 'Confirmed' && !Member::get()->filter('Email',$this->Email)->exists()){
            $member = Member::create();
            $member->FirstName = $this->FirstName;
            $member->Surname = $this->Surname;
            $member->Email = $this->Email;
            $member->write();
        }
        parent::onAfterWrite();
    }
    public function getFirstName(){
        return $this->splitName(0);
    }
    public function getSurname(){
        return $this->splitName(1);
    }
    public function splitName($id){
        $result = explode(' ', $this->Name);
        return $result[$id];
    }
}

pageregistrations_composer.json

{
  "name": "wgodfrey/pageregistrations",
  "description": "Copied from Cam Findlay's lesson",
  "type": "silverstripe-module",
  "keywords": ["silverstripe", "cwp", "registration"],
  "license": "WTFPL",
  "authors": [{
    "name": "Wilfred Godfrey",
    "email": "wilfred@silverstripe.com"
  }],
  "require": {
    "silverstripe/framework": "~3.1",
    "silverstripe/cms": "~3.1"
  }
}

pageregistrations_README.md

Event Registration Module

By Wilfred Godfrey

Extending Cam Findlay's SilverStripe module for event registration. Adding an attendees list and plurilization support.

Write your perfect readme file here

pageregistrations_templates_Includes_EventAttendees.ss

<% if $RegisteredPeeps.count() %>
    <div class="message info">
        <h5>&nbsp;&nbsp;$RegisteredPeeps.count() <% if $RegisteredPeeps.count() == 1 %>person<% else %>people<% end_if %> going:</h5>
        <ul>
            <% loop $RegisteredPeeps %>
                <li>$Name<% if $Organisation %> - <em>$Organisation</em><% end_if %></li>
            <% end_loop %>
        </ul>
    </div>
<% end_if %>

pageregistrations_templates_Includes_EventRegistration.ss

<% if EnableRegistrations %>
    <% if $SpacesAvailable %>
        <h2>Register</h2>
        <h3>$SpacesAvailable space<% if $SpacesAvailable != 1%>s<% end_if %> left</h3>

        <% include EventAttendees %>

        $RegistrationForm
    <% else %>
        <div class="message warning">No spaces left</div>
        <% include EventAttendees %>
    <% end_if %>
<% end_if %>

pageregistrations_tests_RegistrationTest.php

<?php
class RegistrationTest extends SapphireTest {
    public static $fixture_file = 'pageregistrations/tests/RegistrationTest.yml';
    public function testNameSplit(){
        $registration = $this->objFromFixture('Registration', 'JoeBloggs');
        $this->assertEquals($registration->FirstName, 'Joe');
        $this->assertEquals($registration->Surname,'Bloggs');
    }
}

pageregistrations_tests_RegistrationTest.yml

Registration:
  JoeBloggs:
    Name: 'Joe Bloggs'
    Organisation: 'Example Co Ltd.'
    Email: 'joe@bloggs.com'