Fix Navbar Hidden Pages Bug

The navbar contained hidden pages like: 404.html and index.html, this
commit filters the site.html_pages with a better algorithm; any page
having a path in site.nav_exclude won't be included in the navbar. Also
adds a more dynamic way to configure/update the excluded pages.

_config.yml

@@ -10,6 +10,20 @@ baseurl             : "/portfolYOU"                    # subpath of your site (e
 repository          : YoussefRaafatNasry/portfolYOU    # repository metadata on GitHub Pages [know more at https://help.github.com/en/articles/repository-metadata-on-github-pages]
 #remote_theme       : YoussefRaafatNasry/portfolYOU    # uncomment this if you are using it as a remote theme
 
+
+### Build Settings ###
+plugins:
+  - jemoji
+
+
+### Navbar Settings ###
+nav_exclude:                        # Pages with the following paths will be excluded from navbar
+  - 404.html
+  - index.html
+  - articles/tags.html
+  - articles/page-:num/index.html
+
+
 ### Author Info ###
 author:
   name              : John Doe
@@ -57,8 +71,6 @@ defaults:
     values:
       layout: "page"
 
-plugins:
-  - jemoji
 
 ### Exclude from processing ###
 exclude:

_includes/navbar.html

@@ -9,25 +9,55 @@
   <div class="collapse navbar-collapse" id="navbarNavAltMarkup">
     <div class="navbar-nav ml-auto">
 
-      {% assign pages = site.html_pages | sort: 'weight' %}
-
-      {% for nav_page in pages %}  
+      {% assign html_pages = site.html_pages | sort: 'weight' %}
+      {% assign filtered_pages = "" | split: "" %}
 
-        {% if page.url contains nav_page.url %}
+      {% for html_page in html_pages %} 
+
+        {% assign exclude = false %}
+
+        {% for exclude_path in site.nav_exclude %}
+
+          {% if html_page.path == exclude_path %}
+            {% assign exclude = true %}
+            {% break %}
+          {% else if exclude_path contains ':num' %}
+            {% assign temp = html_page.path %}
+            {% assign parts = exclude_path | split: ':num' %}
+            {% for part in parts %}
+              {% assign temp = temp | remove: part %}
+            {% endfor %}
+            {% assign test_num = temp | plus: 0 | downcase %}
+            {% if temp == test_num %}
+              {% assign exclude = true %}
+              {% break %}
+            {% endif %}
+          {% endif %}
+
+        {% endfor %}
+
+        {% unless exclude %}
+          {% assign filtered_pages = filtered_pages | push: html_page %}
+        {% endunless %}
+
+      {% endfor %}
+
+
+      {% for html_page in filtered_pages %}  
+
+        {% if page.url contains html_page.url %}
           {% assign active_status = "active" %}
         {% else %}
           {% assign active_status = "" %}
         {% endif %}
 
-        {% if nav_page.external_url %}
-          {% assign url = nav_page.external_url %}
+        {% if html_page.external_url %}
+          {% assign url = html_page.external_url %}
         {% else %}
-          {% assign url = nav_page.url | relative_url %}
+          {% assign url = html_page.url | relative_url %}
         {% endif %}
 
-        {% unless nav_page.url contains 'page' or nav_page.url contains 'tags' %}
-          <a class="nav-item nav-link {{ active_status }}" href="{{ url }}">{{ nav_page.title }}</a>
-        {% endunless %}
+        <a class="nav-item nav-link {{ active_status }}" href="{{ url }}">{{ html_page.title }}</a>
 
       {% endfor %}