Display System Categories in TYPO3-FE
<p>I am trying to build my first own extension with the Extension Builder. Up to now everything worked really well, but now I've got a problem and am not able to find a solution:</p>

<p>My extension looks like this: You can add new Entries in the backend under <code>List</code> (the entry on the right panel). These entries are then shown in the frontend.
While adding new entries there is the possibility in the horizontal navigation bar to link this entry to specific categories. I've already done this with every entry.
But how can I display this category in the fronted. It should be just one <code>&lt;div&gt;</code> like <code>Linked Categories: CATEGORY</code>.
It seems like there is no ViewHelper which can display all linked categories.</p>

<p>I've already googled a lot, but this just confused me more: It seems like its not possible with a simple ViewHelper. There was a solution, where one had to edit the controller. But I did not like this because then I can not continue working with the Extension Builder or it becomes overwritten.
I also looked in the code of tx_news. It seems like all categories are in a variable there, which can be looped. But in my extension <code>&lt;f:debug&gt;{categories}</code> was always <code>NULL</code>.</p>

<p>Is there no ViewHelper which can display the categories, or anything else? Maybe a good tutorial (I am good in PHP, but new to TYPO3).</p>

<p>Thank you very much in advance,
Felix</p>

<p>P.S: I am using TYPO3 CMS 7.6.9 </p>