Collection filter dropdowns in Minimal

[A_Kuciks]

Hello! 
I added collection filter dropdown menus following this tutorial. The problem is that when I use a filter in a collection the rest of the posible filter values dissapear. Here are some snippets to see what I mean: 

I was wondering would it be possible that all of the available tags within this collection stays in this dropdown e.g. in second snippet the "SV650" product tag still would be visible? It just seems a bit weird that I need to select "All" and then the "SV650" tag to filter only products with this tag. Hope you understood my problem! 
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Thanks in advance!
Regards,
Kuciks

[A_Kuciks]

Hello again! So is this doable by myself or I should be considering hiring a Shopify professional to do this? 

[A_Kuciks · Accepted solution]

Okay so I managed to fix this problem. If anyone else has this problem and you follow the tutorial I mentioned above. In coll-filter class:

      <div class="four-columns">
        <p>Category:</p>
        <select class="coll-filter">
          <option value="">All</option>
          {% for tag in collection.tags %}
            {% if tag contains 'category-' %}
             {% assign tagName = tag | remove: 'category-' %}         
              {% if current_tags contains tag %}
              <option value="{{ tag | handle }}" selected>{{ tagName }}</option>
              {% else %}
              <option value="{{ tag | handle }}">{{ tagName }}</option>
              {% endif %}                     
            {% endif %}
          {% endfor %}
        </select>
      </div>

In line where is the for loop: "{% for tag in collection.tags %}" you should use attribute .all_tags and it fixes this problem

[evavava]

I have three filter shown at the header, but when I use the filter, it turns out there is no product in this collection. Do you know why?

Thank you in advanced.