SilverStripe 3.5 Article.php DataObject, for use with ArticlePages.php, FiltersPage.php

Article.php

<?php

class Article extends DataObject {

	private static $db = array (

		'Title'             => 'Varchar',
		'HideTitle'         => 'Boolean',
		'Date'       		=> 'Date',
		'Teaser'            => 'Text',
		'Author'            => 'Varchar',
        'Content'           => 'HTMLText',
        'ShowOnHome'        => 'Boolean'
	);
    
	private static $has_one = array (

		'ArticlesPage'      => 'ArticlesPage',
		'ArticleImage'      => 'Image',
		'Banner'			=> 'Image',
        'NewsUrl'           => 'Link',
        'NewsLink'          => 'FlexiLink',
        'NewsDoc'           => 'File',
		'Type'    			=> 'Type',
		'Approach'    		=> 'Approach',
		'Service'    		=> 'Service',
		'Industry'    		=> 'Industry'
	);

	private static $summary_fields = array (

		'GridThumbnail'     => '',
		'Title'             => 'Article Title',
		'Author'            => 'Author',
		'ShowOnHome'        => 'Show On Home Page?'
	);

	public function getGridThumbnail() {
		
		if($this->ArticleImage()->exists()) {
			return $this->ArticleImage()->SetWidth(100);
		}
		return '(no image)';
	}

	

    public function getCMSFields() {
        
		$fields = FieldList::create(
            
			TextField::create('Title'),
			CheckboxField::create('HideTitle','Hide Page Title'),
            CheckboxField::create('ShowOnHome','Feature on Home Page'), 
			DateField::create('Date','Article Date')->setConfig('showcalendar', true)->setConfig('dateformat', 'd MMMM yyyy'),
			TextareaField::create('Teaser'),
            TextField::create('Author','Author'),
			 $banner = UploadField::create('Banner', 'Overide Default Banner'),
			 $photo = UploadField::create('ArticleImage'),
            DropdownField::create(
                'TypeID',
                'Type',
                Type::get()->map('ID','Title')
            )->setEmptyString('-- None --'),
            DropdownField::create(
                'IndustryID',
                'Industry',
                Industry::get()->map('ID','Title')
            )->setEmptyString('-- None --'),
            DropdownField::create(
                'ApproachID',
                'Approach',
                Approach::get()->map('ID','Title')
            )->setEmptyString('-- None --'),
            DropdownField::create(
                'ServiceID',
                'Service',
                Service::get()->map('ID','Title')
            )->setEmptyString('-- None --'),
            $document = UploadField::create('NewsDoc','Document, optional (PDF only)'),
            LinkField::create('NewsUrl'), 
            FlexiLinkField::create('NewsLink'),             
            HTMLEditorField::create('Content')
		);
        
        $photo->getValidator()->setAllowedExtensions(array('png','jpg','jpeg'));
		$photo->setFolderName('photos');

		$document->getValidator()->setAllowedExtensions(array('pdf'));
		$document->setFolderName('articles');

		$banner->setFolderName('Banner');
        $banner->getValidator()->setAllowedExtensions(array('png','jpeg','jpg'));

		return $fields;
	}


	public function Link() {
		return $this->ArticlesPage()->Link('article/'.$this->ID);
	}


	public function LinkingMode() {
		return Controller::curr()->getRequest()->param('ID') == $this->ID ? 'current' : 'link';
	}  


	
}