I have two similar DOMs for different pages. Both have nested FileDataObjectManagers. In one of them the "Save" button is disabled in the popup once a file has been added. The other works fine, file or no file.

In the broken Popup, form data can be saved by putting one's cursor in a textfield and pressing return.

As far as I can tell, the problem is that the "</form>" tag is being inserted before the "Save" button div in the broken Popup, and after the "Save" button div in the working Popup.

Any ideas?

Can you post your code and/or a screenshot?

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I don't see a way to add an image, but here is the code.

CourseAdvertisement class - this is the main class for the DOM popup that has the "Save" button that doesn't work.

class CourseAdvertisement extends DataObject {
    public static $db = array (
        'CourseName' => 'Text',
        'CourseDescription'=> 'HTMLText',
        'CourseVideo' => 'HTMLText',
        'CourseImageAltText' => 'Text',
        'CourseAdditionalDescription' => 'HTMLText'
        
    );
    
    static $has_one = array (
        'CourseImage' => 'Image',
        'CourseSalesPage' => 'CourseSalesPage'
    );
    
    static $has_many = array (        
        'CourseOptions' => 'CourseAdvertisementItem',
        'Files' =>'CourseAdvertisementFile'
    );
    
    
    public function getCMSFields() {
        $files = new FileDataObjectManager (
                $this,
                'Files',
                'CourseAdvertisementFile',
                'File',
                array(
                    'FileName' => 'Name',
                    'FileDescription' => 'Description'
                )
            );
		$files->allowUploadFolderSelection = false;
		$files->setUploadFolder('Uploads/CourseSalesFiles');
                $files->setAddTitle('File');
        
        $buynowButtons = new DataObjectManager (
                $this,
                'CourseOptions',
                'CourseAdvertisementItem',
                array (
                    'ItemDescription' => 'Description',
                    'ItemPrice' => 'Price',
                    'ItemButtonCode' => 'Buy Now Button Code'
                )
            );
        $buynowButtons->setAddTitle('Sales Option');
        
        return new FieldSet(
            new TextField('CourseName', 'Name'),
            new SimpleHTMLEditorField('CourseDescription', 'Description'),
            new TextField('CourseVideo', 'Video Embed Code (Format: [Vimeo id= width=360 height=210]Description[/Vimeo])', '[Vimeo id= width=360 height=210]Description[/Vimeo]'),
            new ImageField('CourseImage', 'Image', Null, Null, Null, 'Uploads/CourseSalesImages'),
            new TextField('CourseImageAltText', 'Alternate Text for Image'),
            new SimpleHTMLEditorField('CourseAdditionalDescription', 'Additional Description (below small image on right)'),
            $buynowButtons,
            $files
        );
        
    }
}

CourseAdvertisementItem class - nested DOM

class CourseAdvertisementItem extends SalesItem {
    public static $db = array (
    );
    
    static $has_one = array (
        "CourseAdvertisement" => "CourseAdvertisement"
    );
    
}

SalesItem class - nested DOM.

class SalesItem extends DataObject {
    public static $db = array (
        'ItemDescription' => 'HTMLText',
        'ItemPrice' => 'Text',
        'ItemButtonCode' => 'HTMLText'
    );
    
    static $has_one = array (
    );
    
    public function getCMSFields() {
        return new FieldSet(
            new TextareaField('ItemDescription', 'Description'),
            new TextField('ItemPrice', 'Price'),
            new TextField('ItemButtonCode', 'ButtonCode')
        );
    }
}

CourseAdvertisementFile class - Another nested DOM. Save button stops functioning once a file has been added.

class CourseAdvertisementFile extends PageFile {
    public static $db = array (
    );
    
    static $has_one = array (
        'CourseAdvertisement' => 'CourseAdvertisement'
    );

}

PageFile class

class PageFile extends DataObject {
    public static $db = array (
        'FileName' => 'Text',
        'FileDescription' => "Text"
    );
    
    static $has_one = array (
        'File' => 'File'
    );
    
    public function getCMSFields() {
        return new FieldSet(
            new TextField('FileName', 'File Name'),
            new FileIFrameField('File'),
            new TextareaField('FileDescription', 'File Description')
        );
    }
}