Shopify Sidebar Tag Filter

collection-sidebar.liquid

<aside id="collection-filters">
	<h2>Narrow Results</h2>
  {% comment %}Exceptions{% endcomment %}
	{% if collection.handle contains 'x' %}{% assign handle = 'y' %}
	{% else %}{% assign handle = collection.handle %}{% endif %}
	{% for i in (1..5) %}
	{% capture include_filter %}{{ handle }}_filter_no_{{ i }}_enable{% endcapture %}
	<!-- {{ include_filter }} -->
	{% if settings[include_filter] %}
		{% capture include_filter %}include_{{ handle }}_filter_no_{{ i }}{% endcapture %}
		{% capture filter_label %}{{ handle }}_filter_no_{{ i }}_label{% endcapture %}
		{% capture filter_linklist %}{{ handle }}_filter_no_{{ i }}_linklist{% endcapture %}
		{% if settings[filter_label] != '' %}
			<h3 class="narrow_title">{{ settings[filter_label] }}</h3>
		{% endif %}
		<ul>
			{% include 'filter-by-tag' with settings[filter_linklist] %}
		</ul>
	{% endif %}
	{% endfor %}
	<a href="{{ collection.url }}"><i>Remove all filters</i></a>
</aside>

filter-by-tag.liquid

{% assign all_filter_tags = '' %}
{% for link in linklists[filter-by-tag].links %}
  {% if collection.all_tags contains link.title %}
    {% capture all_filter_tags %}{{ all_filter_tags }},{{ link.title }}{% endcapture %}
  {% endif %}
{% endfor %} 
{% assign new_tags = '' %}
{% for tag in current_tags %}
    {% capture new_tags %}{{ new_tags }}+{{ tag | handle }}{% endcapture %}
{% endfor %}
{% capture new_tags %}{{ new_tags | remove_first: '+' }}{% endcapture %}
{% for link in linklists[filter-by-tag].links %}
  {% if collection.tags contains link.title %}
    {% if current_tags contains link.title %}
      <li>{{ link.title | link_to_remove_tag: link.title }}</li>
    {% else %}
      {% if collection.url != '' %}
        {% capture url %}{{ collection.url }}/{% if new_tags != '' %}{{ new_tags }}+{% endif %}{{ link.title | handle }}{% endcapture %}
      {% else %}
        {% capture url %}/collections/all/{% if new_tags != '' %}{{ new_tags }}+{% endif %}{{ link.title | handle }}{% endcapture %}
      {% endif %}
      <li>{{ link.title | link_to: url }}</li>
    {% endif %}
  {% endif %}
{% endfor %}

{% if collection.url != '' %}
  {% capture url %}{{ collection.url }}{% if new_tags != '' %}/{{ new_tags }}{% endif %}{% endcapture %}
{% else %}
  {% capture url %}/collections/all{% if new_tags != '' %}/{{ new_tags }}{% endif %}{% endcapture %}
{% endif %}

settings_schema.json

  {
    "name": "Collection Filters",
    "settings": [
      {
        "type": "paragraph",
        "content": "Seasonal Collection Filters"
      },
      {
        "type": "checkbox",
        "id": "seasonal_filter_no_1_enable",
        "label": "Use filter 1?"
      },
      {
        "type": "text",
        "id": "seasonal_filter_no_1_label",
        "label": "Filter 1 Label"
      },
      {
        "type": "link_list",
        "id": "seasonal_filter_no_1_linklist",
        "label": "Filter 1 Linklist"
      },
      {
        "type": "checkbox",
        "id": "seasonal_filter_no_2_enable",
        "label": "Use filter 2?"
      },
      {
        "type": "text",
        "id": "seasonal_filter_no_2_label",
        "label": "Filter 2 Label"
      },
      {
        "type": "link_list",
        "id": "seasonal_filter_no_2_linklist",
        "label": "Filter 2 Linklist"
      },
      {
        "type": "checkbox",
        "id": "seasonal_filter_no_3_enable",
        "label": "Use filter 3?"
      },
      {
        "type": "text",
        "id": "seasonal_filter_no_3_label",
        "label": "Filter 3 Label"
      },
      {
        "type": "link_list",
        "id": "seasonal_filter_no_3_linklist",
        "label": "Filter 3 Linklist"
      },
      {
        "type": "checkbox",
        "id": "seasonal_filter_no_4_enable",
        "label": "Use filter 4?"
      },
      {
        "type": "text",
        "id": "seasonal_filter_no_4_label",
        "label": "Filter 4 Label"
      },
      {
        "type": "link_list",
        "id": "seasonal_filter_no_4_linklist",
        "label": "Filter 4 Linklist"
      }
    ]
  }