Add support for last-modified at plugin

Gemfile

@@ -4,5 +4,6 @@ gem 'jekyll-feed'
 gem 'redcarpet'
 
 group :jekyll_plugins do
-    gem 'jekyll-livereload'
+  gem 'jekyll-livereload'
+  gem 'jekyll-last-modified-at'
 end

README.md

@@ -173,6 +173,11 @@ nav_ext_links:
   - name: Link 2
     url: http://wallabag.org/
 ```
+#### Plugins
+
+Academic is compatible with the `jekyll-last-modified-at` plugin ([repo](https://github.com/gjtorikian/jekyll-last-modified-at)). If installed, the last modified date will be (discretely) displayed in the posts lists and in the post layout.
+
+If you specified a Github `repo`, the last modified date will point to the revision history of the file.
 
 ### Layouts
 

_includes/last_modified_at.html

@@ -0,0 +1,27 @@
+{% assign object = include.object %}
+
+{% if object.last_modified_at %}
+
+
+  {% assign last = object.last_modified_at | date: '%Y%m%d' %}
+  {% assign created = object.date | date: '%Y%m%d' %}
+
+  {% if last != created %}
+    <span class="last-update">·
+
+    {% if site.repo %}
+    <a title="Voir l'historique des révisions de ce billet"
+       href="{{site.repo}}/commits/master/{{object.path}}">
+    {% endif %}
+
+    mis à jour le {% include date.html date=object.last_modified_at %}
+
+    {% if site.repo %}
+    </a>
+    {% endif %}
+
+    </span>
+  {% endif %}
+
+
+{% endif %}

_includes/post-li.html

@@ -6,6 +6,7 @@ <h2>
     <span class="post-meta">
       <span class="date">
       {% include date.html date=post.date %}
+      {% include last_modified_at.html object=post %}
       </span>
     </span>
 

_layouts/post.html

@@ -17,6 +17,7 @@ <h1 class="post-title" itemprop="name headline">{{ page.title | escape }}</h1>
         <time datetime="{{ page.date | date_to_xmlschema }}" itemprop="datePublished">
           {% include date.html date=page.date %}
         </time>
+        {% include last_modified_at.html object=page %}
         {% if page.author %} • 
           <span itemprop="author" itemscope itemtype="http://schema.org/Person"><span itemprop="name">{{ page.author }}</span></span>
         {% endif %}

_sass/academic/_layout.scss

@@ -333,8 +333,20 @@
   margin-left: 0;
   list-style: none;
 
+  .last-update {
+    display: none;
+    color: $grey-color-light;
+    a {
+      color: $grey-color-light;
+    }
+  }
+
   > li {
     margin-bottom: $spacing-unit;
+
+    &:hover .last-update {
+      display: inline-block;
+    }
   }
 
   .post-link {
@@ -380,6 +392,11 @@
     }
   }
 
+  .last-update {
+    color: $grey-color;
+    a { color: inherit }
+  }
+
   .post-thumbnail {
     position: absolute;
     z-index: -1;

academic.gemspec

@@ -2,7 +2,7 @@
 
 Gem::Specification.new do |spec|
   spec.name          = "academic"
-  spec.version       = "0.2.0"
+  spec.version       = "0.4.0"
   spec.authors       = ["gaalcaras"]
   spec.email         = ["gaby.alcaras@gmail.com"]