I'm needing help creating a form for the frontend where the user can edit a DataObject.

The website is basically a planner, so the user has a project (or projects) assigned to them. The projects are made up of 9 steps which the user works through gradually. Where I'm stuck is giving the user the ability to edit the Project dataobjects "Title" and "Description".

Here's what I have so far:

Edit project form

public function EditProjectForm() {
			
        $projectID = (int) $this->request->param('ID');
	$project = Project::get()->byID($projectID);
	
	$project->ProjectID = $project->ID;
	
	$fields = new FieldList(
		TextField::create('Title', 'Project Title'),
		TextareaField::create('Description', 'Project Description'),
		FileField::create('ProjectImage', 'ProjectImage'),
		TextField::create('Category', 'Category'),
        	TextField::create('ProjectID')
	);
		
	$actions = new FieldList(
		FormAction::create("doEdit", 'Submit changes')
	);
		
	$form = new Form($this, 'EditProjectForm', $fields, $actions); 
	$form->loadDataFrom($project);
		
	return $form;
}

doEdit Action

public function doEdit($data, Form $form) {
		
        $projectID = $data['ProjectID'];
		$project = Project::get()->byID($projectID);

        $form->saveInto($project);

        $project->Title = $data['Title'];
        $project->Description = $data['Description'];

        $project->write();

        $this->redirectBack();

}

This creates the form fine, and populates the form with the projects information. But when I click doEdit it just goes to a blank white page at www.mypage.com/EditProjectForm

I'm really stuck on this, and given I'm very much a beginner to PHP this is a major headache...

The "offical" method for 2.4 is genericviews - https://github.com/chillu/silverstripe-genericviews
I Think this is mostly going to work on 3.x too.