From 6e4f9c92f3c568729b6bd767015b18c0f9eb5431 Mon Sep 17 00:00:00 2001
From: Denis Tereshkin <denis@kasan.ws>
Date: Fri, 5 May 2017 17:46:39 +0700
Subject: [PATCH] Trades: pagination

---
 templates/dashboard/trades.html |  7 +++++++
 views.py                        | 17 ++++++++++++++++-
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/templates/dashboard/trades.html b/templates/dashboard/trades.html
index 2ff476b..4e41019 100644
--- a/templates/dashboard/trades.html
+++ b/templates/dashboard/trades.html
@@ -40,4 +40,11 @@
     </tr>
 {% endfor %}
 </table>
+<nav aria-label="Page navigation">
+    <ul class="pagination">
+        {% for p in page_range %}
+        <li{% if p == page_num %} class="active"{% endif %}><a href="{% url 'trades_index'%}?page={{p}}">{{ p }}</a></li>
+        {% endfor %}
+    </ul>
+</nav>
 {% endblock %}
diff --git a/views.py b/views.py
index 2e00461..e91d9a8 100644
--- a/views.py
+++ b/views.py
@@ -7,6 +7,7 @@ from django.contrib import messages
 from django.contrib.auth.decorators import login_required
 from django.db import transaction
 from django.contrib.auth import authenticate, login, logout
+from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger
 
 from .models import RobotInstance, Trade, ClosedTrade
 from .forms import NewTradeForm, ClosedTradeFilterForm, LoginForm
@@ -123,11 +124,25 @@ def trades_index(request):
     now = datetime.datetime.utcnow()
     new_trade_form = NewTradeForm(initial={'timestamp' : now})
     trades = Trade.objects.all().order_by('-timestamp')
+    paginator = Paginator(trades, 25)
+    try:
+        page_num = int(request.GET.get('page'))
+    except:
+        page_num = 1
+    try:
+        trades = paginator.page(page_num)
+    except PageNotAnInteger:
+        trades = paginator.page(1)
+    except EmptyPage:
+        trades = paginator.page(1)
+
     template = loader.get_template('dashboard/trades.html')
     context = {
             'trades' : trades,
             'new_trade_form' : new_trade_form,
-            'user' : request.user
+            'user' : request.user,
+            'page_num' : page_num,
+            'page_range' : paginator.page_range
             }
     return HttpResponse(template.render(context, request))