SilverStripe ArticlesPage.php for use with Article.php

ArticlesPage.php

<?php

class ArticlesPage extends Page {

	private static $has_many = array (

		'Articles' => 'Article'
	);


	public function getCMSFields() {
		$fields = parent::getCMSFields();

		$fields->removeByName("Banner");
        $fields->removeByName("Documents");
        $fields->removeByName("Teaser");

		$fields->addFieldToTab('Root.Articles', GridField::create(
			'Articles',
			'Articles on this page',
			$this->Articles(),
			GridFieldConfig_RecordEditor::create()
		));

		return $fields;
	}
    
}

class ArticlesPage_Controller extends Page_Controller {

	private static $allowed_actions = array (

		'article'
	);


	public function article(SS_HTTPRequest $request) {
		$article = Article::get()->byID($request->param('ID'));

		if(!$article) {
			return $this->httpError(404, 'That article could not be found');
		}

		return array (
			'Article' => $article,
			'Title' => $article->Title
		);
	}
    
	protected $articleList;

	public function init () {
		parent::init();

		$this->articleList = Article::get()->sort('Date DESC');
	}


	// Pagination
	public function PaginatedArticles ($num = 5) {		
		return PaginatedList::create(
			$this->articleList,
			$this->getRequest()
		)->setPageLength($num);
	}

	
	// Lists
	public function AllArticles() {
		return Article::get()
            ->sort('Created', 'DESC');
	}


    public function LatestArticles() {
		return Article::get()
				->sort('Created', 'ASC');
	}

	public function Types() {
		return Type::get()
				->sort('Created', 'ASC');
	}

	public function Industries() {
		return Industry::get()
				->sort('Created', 'ASC');
	}

	public function Approaches() {
		return Approach::get()
				->sort('Created', 'ASC');
	}

	public function Services() {
		return Service::get()
				->sort('Created', 'ASC');
	}

}