Issue #19: Add paging to article lists

ThetaTauMiami · Mar 4, 2014 · 5061a33 · 5061a33
1 parent 9f3b739
commit 5061a33
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Showing 2 changed files with 59 additions and 6 deletions.
diff --git a/articles/templates/article_list.html b/articles/templates/article_list.html
@@ -46,11 +46,39 @@ <h3><a href="{{ article.id }}">{{ article.title }}</a></h3>
       <hr>
 
       <div class="row">
-
-        <ul class="pager">
-          <li class="previous"><a href="?page=0">&larr; Older</a></li>
-          <li class="next"><a href="?page=2">Newer &rarr;</a></li>
-        </ul>
+        <div class="col-lg-12">
+          <ul class="pagination">
+          	{% if prev_page == 0 %}
+
+          	{% else %}
+	           	{% if brothers_count %}
+	           		<li><a href="?page={{ prev_page }}&count={{ brothers_count }}">&laquo;</a></li>
+	           	{% else %}
+	           		<li><a href="?page={{ prev_page }}">&laquo;</a></li>
+	           	{% endif %}
+           	{% endif %}
+            {% for i in page_numbers %}
+            	{% if page_number == i %}
+            		<li class="active"><a href="#">{{ page_number }}</a></li>
+            	{% else %}
+	            	{% if brothers_count %}
+	            		<li><a href="?page={{ i }}&count={{ brothers_count }}">{{ i }}</a></li>
+	            	{% else %}
+	            		<li><a href="?page={{ i }}">{{ i }}</a></li>
+	            	{% endif %}
+	            {% endif %}
+            {% endfor %}
+            {% if next_page == 0 %}
+
+            {% else %}
+	           	{% if brothers_count %}
+	           		<li><a href="?page={{ next_page }}&count={{ brothers_count }}">&raquo;</a></li>
+	           	{% else %}
+	           		<li><a href="?page={{ next_page }}">&raquo;</a></li>
+	           	{% endif %}
+           	{% endif %}
+          </ul>        
+        </div>
 
       </div>
 

diff --git a/articles/views.py b/articles/views.py
@@ -2,8 +2,15 @@
 
 from django.http import HttpResponse
 from django.template import Context, loader
+import math
 
 from articles.models import Article, ArticleCategory, ArticleEntity, Gallery, InGallery, Picture
+from listing.pages import PageHelper
+
+default_count_per_page = 5
+max_count_per_page = 25
+max_pages_listed_on_screen = 5
+
 
 def index(request):
     t = loader.get_template('article_list.html')
@@ -17,7 +24,25 @@ def general_listing(request, eventType, category):
     type_id = ArticleCategory.objects.filter(name=category)[0].id
     t = loader.get_template('article_list.html')
     article_list = Article.objects.filter(category=type_id)
-    c = Context({'eventType': eventType, 'article_list': article_list})
+    article_count = PageHelper.get_request_count(request, default_count_per_page, max_count_per_page)
+    page_number = PageHelper.get_page_number(request)
+    articles_range_min = (page_number - 1) * article_count
+    articles_range_max = (page_number) * article_count    
+    number_of_articles = len(article_list)
+    total_pages = int(math.ceil(number_of_articles / float(article_count)))
+    article_list = article_list[articles_range_min:articles_range_max]
+    page_numbers_list = PageHelper.calculate_page_range(total_pages, page_number, max_pages_listed_on_screen)    
+    next_page = page_number + 1 if number_of_articles > articles_range_max else 0
+    prev_page = page_number - 1
+    context_dict = {
+                    'eventType': eventType,
+                    'article_list' : article_list, 
+                    'page_number' : page_number, 
+                    'prev_page': prev_page, 
+                    'next_page' : next_page, 
+                    'page_numbers' : page_numbers_list
+                    }
+    c = Context(context_dict)
     return HttpResponse(t.render(c))