Filter items by category

Hello!

I am trying to do something similar to this post: http://www.interactivetools.com/forum/forum-posts.php?postNum=2217470#post2217470

Unfortunately, I can't seem to make this work and am reaching out for help to save my sanity.  :-)

Essentially, I am trying to arrange FAQ questions and answers underneath their respective category heading.  So, when working, it should appear like this.

Category 1

• Question 1
  Answer 1
• Question 3
  Answer 3

Category 2

• Question 2
  Answer 2
• Question 5
  Answer 5

Category 3

• Question 4
  Answer 4
• Question 6
  Answer 6

For this example, in CMSB, I have a multi editor where the client add questions (faq_questions) and they can select a category radio button which is supplied by a category multi-editor (faq_topics).

My full implementation will include toggles for each question, as seen here: http://dwellingproductions.com/clients/cvrs/faq.php

But, for now, I've pared down the code to try and get it working before I add the toggle code.  You can see my "progress" here: http://dwellingproductions.com/clients/cvrs/faq2.php  Right now, the topic headings display, but no questions and answers display.

The code I currently have is:

<?php $questionsByTopic = array_groupBy($faq_questionsRecords, 'topic', true); ?>

<?php foreach (getListOptions('faq_questions', 'topic') as $value => $label): ?>

  
  <h4><?php echo $label;?></h4>

  <?php $faq_questions['topic'] = @$questionsByTopic[$value]; ?>
  <?php if (!$faq_questions) { $faq_questions = array(); } ?>

  <?php foreach ($faq_questions as $record): ?>

    <p>
        <?php echo $record['question'] ?><br>
        <?php echo $record['answer'] ?><br><br>
    </p>

  <?php endforeach ?>

<?php endforeach ?>


It would also be nice if the category (topic) heading would not display if there were no questions associated with it (as shown in this post: http://www.interactivetools.com/forum/forum-posts.php?postNum=2217490#post2217490).  I left that code out for now because it wouldn't display anything when I added it.  :-)

In case they are needed, the field names I'm working with are:

For Categories: faq_topics: 'title'
For FAQ Items: faq_questions: 'question', 'answer', 'topic' (the list which pulls topic titles from the above 'faq_topics")

Hopefully that all makes sense.  Thanks, in advance, for any assistance!

- Jeremy