{%- liquid
assign previous_product = collection.previous_product
assign next_product = collection.next_product
if previous_product or next_product
else
assign collectionList = product.collections[0].handle
assign previous_product = nil
assign next_product = nil
assign last = collections[collectionList].products_count
for p in collections[collectionList].products
if p.handle == product.handle
assign prev = forloop.index | minus: 2
assign next = forloop.index
if prev >= 0
assign previous_product = collections[collectionList].products[prev].handle
endif
if last >= next
assign next_product = collections[collectionList].products[next].handle
endif
break
endif
endfor
endif
-%}
<div id="nextpre">
{%- if previous_product -%}
<a class="next-prev-icon prev-icon" href="{{ previous_product }}">
<---------
</a>
{%- endif -%}
{%- if next_product -%}
<a class="next-prev-icon next-icon" href="{{ next_product }}">
--------->
</a>
{%- endif -%}
</div>