Help creating bootstrap3 child theme for OJS3.1.2

Software Support
1

I’m trying to learn how to create a child theme with the Bootstrap 3 theme as its parent, but my study of the documentation doesn’t seem to be helping me to understand some of the basics. My understanding was that a basic, minimal child theme should behave exactly like its parent, but when I try to use a child theme that merely sets bootstrapthreethemeplugin as its parent I end up with pages that are badly mangled.

Starting with a bare minimum bootstrap 3 child seemed like a good way to get started learning and building new themes with the potential for incorporating bootstrap’s design elements. Can anyone offer help or advice with this first step?

2

To put this more directly:

The theming guide’s discussion of child theme’s for Bootstrap 3 says that you only need to create a LESS file with variables you choose to override in the parent theme and this code:

/**
 * Load the custom styles for our theme
 * @return null
 */
public function init() {
    $this->setParent('bootstrapthreethemeplugin');
    $this->modifyStyle('bootstrap', array('addLess' => array('styles/variables.less')));

That’s exactly what I’ve done in the code posted in the previous comment, but the theme is thoroughly broken. Is the theming guide leaving out a crucial step, or have I missed something?