slugifier | Returns a slug given a string | Build Tool library

I have the following situation:

• A database stores information about houses (address, number of rooms, date built, last selling price, etc.)
• This database is being manipulated through an app (let's call that app the "backend house app") that cannot be directly integrated in a Sulu-driven app. I can access the stored data through an API that gives me JSON-representations of House-objects. I can also have the app launch some sort of call to a Sulu-driven app when a house is created, updated or deleted.
• The Sulu-driven app (let's call that the "frontend house app") with templates for "house", "room", etc., is connected to a different database on a different server. This Sulu-driven app's website-environment shows house-pages with room-pages where some content is pre-filled through a connection to the "backend house app". Other content only exists on the database of the "frontend house app", like user comments, appraisals of interior design, etc., according to configured aspects of the Sulu-templates.

What I want to achieve, is a way to automate the creation, updating and deletion of "frontend house app"-pages based on activity in the "backend house app".

For instance, when a new house is added in the "backend house app", I want it to notify the "frontend house app" so that the "frontend house app" will automatically create the entire node-tree for the newly added house. Meaning: a "house"-page with the required data filled in, "room"-pages for each room, etc., so that the content manager of the "frontend house app" can see the entire tree of the newly added house in the workspace and can start manipulating content in the already available templates. In addition to automatically creating these pages, I also want to pre-set the rights to update and create, since the content manager of the "frontend house app" must not be able to create new rooms or change the name of the house, for instance.

I did not manage to get it working, I'll just add what I already done to show where I got stuck.

I started out with the following code, in a controller that extends Sulu's own WebsiteController: