Update

Author: stevenjoezhang

layout/_macro/post-collapse.swig

@@ -1,4 +1,17 @@
-{% macro render(post) %}
+{% macro render(posts) %}
+{%- for post in posts %}
+
+  {# Show year #}
+  {%- set year %}
+  {%- set post.year = date(post.date, 'YYYY') %}
+
+  {%- if post.year !== year %}
+    {%- set year = post.year %}
+    <div class="collection-title">
+      <{%- if theme.seo %}h2{% else %}h1{%- endif %} class="archive-year" id="archive-year-{{ year }}">{{ year }}</{%- if theme.seo %}h2{% else %}h1{%- endif %}>
+    </div>
+  {%- endif %}
+  {# endshow #}
 
   <article class="post post-type-{{ post.type | default('normal') }}" itemscope itemtype="http://schema.org/Article">
     <header class="post-header">
@@ -30,4 +43,5 @@
     </header>
   </article>
 
+{%- endfor %}
 {% endmacro %}

layout/archive.swig

@@ -31,23 +31,7 @@
       </span>
       {%- endif %}
 
-      {%- for post in page.posts %}
-
-        {# Show year #}
-        {%- set year %}
-        {%- set post.year = date(post.date, 'YYYY') %}
-
-        {%- if post.year !== year %}
-          {%- set year = post.year %}
-          <div class="collection-title">
-            <{%- if theme.seo %}h2{% else %}h1{%- endif %} class="archive-year" id="archive-year-{{ year }}">{{ year }}</{%- if theme.seo %}h2{% else %}h1{%- endif %}>
-          </div>
-        {%- endif %}
-        {# endshow #}
-
-        {{ post_template.render(post) }}
-
-      {%- endfor %}
+      {{ post_template.render(page.posts) }}
 
     </div>
   </div>

layout/category.swig

@@ -19,23 +19,7 @@
         </{%- if theme.seo %}h2{% else %}h1{%- endif %}>
       </div>
 
-      {%- for post in page.posts %}
-
-        {# Show year #}
-        {%- set year %}
-        {%- set post.year = date(post.date, 'YYYY') %}
-
-        {%- if post.year !== year %}
-          {%- set year = post.year %}
-          <div class="collection-title">
-            <{%- if theme.seo %}h2{% else %}h1{%- endif %} class="archive-year" id="archive-year-{{ year }}">{{ year }}</{%- if theme.seo %}h2{% else %}h1{%- endif %}>
-          </div>
-        {%- endif %}
-        {# endshow #}
-
-        {{ post_template.render(post) }}
-
-      {%- endfor %}
+      {{ post_template.render(page.posts) }}
     </div>
 
   </div>

layout/tag.swig

@@ -19,23 +19,7 @@
         </{%- if theme.seo %}h2{% else %}h1{%- endif %}>
       </div>
 
-      {%- for post in page.posts %}
-
-        {# Show year #}
-        {%- set year %}
-        {%- set post.year = date(post.date, 'YYYY') %}
-
-        {%- if post.year !== year %}
-          {%- set year = post.year %}
-          <div class="collection-title">
-            <{%- if theme.seo %}h2{% else %}h1{%- endif %} class="archive-year" id="archive-year-{{ year }}">{{ year }}</{%- if theme.seo %}h2{% else %}h1{%- endif %}>
-          </div>
-        {%- endif %}
-        {# endshow #}
-
-        {{ post_template.render(post) }}
-
-      {%- endfor %}
+      {{ post_template.render(page.posts) }}
     </div>
 
   </div>