Adding extra image field to any DCA say tl_article

[tsarma]

I have added a new field for article teaser Image like below in my custom module-> MyMod/dca/tl_article:

/* article teaser image */
$GLOBALS['TL_DCA']['tl_article']['fields']['atImage'] = array
(
			'label'		=> &$GLOBALS['TL_LANG']['tl_article']['atImage'],
			'exclude'		=> true,
			'inputType'		=> 'fileTree',
			'eval'			=> array('filesOnly'=>true, 'fieldType'=>'radio', 'tl_class'=>'clr'),
			'sql'                    => "varchar(255) NOT NULL default ''"
);

// Augment the pallette
$GLOBALS['TL_DCA']['tl_article']['palettes']['default'] = str_replace('teaser;', 'teaser, atImage;', $GLOBALS['TL_DCA']['tl_article']['palettes']['default']);

In the template mod_artcle I wanted to out put this image. But doing <?php echo $this->atImage; ?> gives only the ID of an Image.
At the moment I am doing like:

	<?php 
		$objFile = \FilesModel::findByPk($this->atImage);
		echo $objFile->path; 
	?>

inside the template (mod_article), which I am not satisfied. I think there is a better way of setting up template variables with real image path. Can some one suggest please.

[qzminski]

That's the correct way to do it. If you would like to resize an image, then you would need to use

<?php \Image::get($objFile->path, 100, 100, 'center_center'); ?>

You would be able to deliver the path to the template only if you override the ModuleArticle class.

[tsarma]

Thank your for the answer, and your blog helped me a lot too.
At the moment the correct answer is not so satisfying because I've to put lots of php code in Template file. So I think overriding the Module class might be a better option. Can you tell me a best practice how to override a core class.