Hi guys,

I'm new in SilverStripe and i'm not quite sure i can do this.
Can i access the data from getCMSField?

class ImageDemo extends Page 
{
    static $db = array(
        'Title'             => 'Varchar'
    );

    static $has_one = array(
        'Graphic'           => 'Image'
    );

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

        if ($this->Graphic.exists()) {  <--------------- I wanna check if the data exist in Graphic


            $fields->addFieldToTab("Root.Content.Main", new UploadField('Graphic', "A Feature Image"), "Content");
            
        }
        else
        {
            $fields->addFieldToTab("Root.Content.Main", new TextField('Graphic', "A Feature Image"), "Content");
        }
        return $fields;
    }
}

The answer is sometimes. You can for edit forms but on creation the form values will not be set. You could do something like if($this->Graphic() && $this->Graphic()->exists()) { // ...

Thank you very much, that worked perfectly :)