Prevent template render errors when data is missing. Fixes #44.

README.md

@@ -98,6 +98,12 @@ for more info.
 Releases
 --------
 
+### 0.5.3: 2016-12-22
+
+- Prevent template render errors when data is missing. Fixes
+  [#44](https://github.com/oddbird/sassdoc-theme-herman/issues/44).
+
+
 ### 0.5.2: 2016-12-15
 
 - Change absolute `@see` links to relative paths,

package.json

@@ -1,7 +1,7 @@
 {
   "name": "sassdoc-theme-herman",
   "description": "An Odd SassDoc theme.",
-  "version": "0.5.2",
+  "version": "0.5.3",
   "keywords": [
     "sassdoc-theme"
   ],

templates/item/macros.j2

@@ -2,10 +2,10 @@
 
 
 {% macro code_block(language=none, content=none) %}
-  {% set content = content if (content != none) else caller() %}
+  {% set content = caller() if caller else content %}
   {% if content %}
     {% set language = 'jinja' if language == 'njk' else language %}
-    {% set language = ['lang', language]|join('-') if language != none %}
+    {% set language = ['lang', language]|join('-') if language !== none %}
     <pre data-sassdoc="hljs"><code{% if language %} class="{{ language }}"{% endif %}>{{ content }}</code></pre>
   {% endif %}
 {% endmacro %}

templates/utility.macros.j2

@@ -16,7 +16,7 @@
 
 
 {% macro link_if(content=none, url=none, attrs={}) -%}
-  {%- set content = content if (content != none) else caller() -%}
+  {%- set content = caller() if caller else content -%}
 
   {%- if url -%}
     <a href="{{ url }}" {{ show_attrs(attrs) }}>{{ content }}</a>
@@ -42,14 +42,14 @@
 
 {# Tabbed elements (see `static/js/app/base.js`) #}
 {% macro tab(id, group, content=none, active=false) %}
-  {% set content = content if (content != none) else caller() %}
+  {%- set content = caller() if caller else content -%}
   <a href="#panel-{{ id }}" data-sassdoc="example-tab" id="tab-{{ id }}" role="tab" data-tab-group="{{ group }}" data-contents="{{ id }}" aria-controls="panel-{{ id }}"{% if active %} aria-selected="true" tabindex="0"{% else %} tabindex="-1"{% endif %}>
     {{ content }}
   </a>
 {% endmacro %}
 
 {% macro tab_panel(id, group, content=none, active=false, class=none) %}
-  {% set content = content if (content != none) else caller() %}
+  {%- set content = caller() if caller else content -%}
   <div data-sassdoc="example-panel" id="panel-{{ id }}" role="tabpanel" data-tab-group="{{ group }}" aria-labelledby="tab-{{ id }}" aria-hidden="{{ 'false' if active else 'true' }}" {{ attr_if('data-sassdoc-example-panel', class) }}>
     {{ content }}
   </div>