✨ Add pagination to package search

Signed-off-by: Shivam Sandbhor <shivam.sandbhor@gmail.com>

Author: sbs2001

vulnerabilities/templates/packages.html

@@ -49,6 +49,16 @@ <h3 class="subtitle">Total Results {{packages|length}}</h3>
       {% endfor %}
     </table>
   </div>
+  
+  <div class="is-field is-horizontal">
+    {% if packages.has_previous %}
+      <a class="button" href="?{{ searched_for }}&page={{ packages.previous_page_number }}">Previous Page</a>
+    {% endif %}
+  
+    {% if packages.has_next %}
+      <a class="button" href="?{{ searched_for }}&page={{ packages.next_page_number}}">Next Page</a>
+    {% endif %}
+  </div>
 </section>
 
 {% endif %}

vulnerabilities/views.py

@@ -20,6 +20,8 @@
 #  VulnerableCode is a free software code scanning tool from nexB Inc. and others.
 #  Visit https://github.com/nexB/vulnerablecode/ for support and download.
 
+from urllib.parse import urlencode
+
 from django.core.paginator import Paginator
 from django.shortcuts import render
 from django.urls import reverse
@@ -42,7 +44,12 @@ def get(self, request):
 
         if request.GET:
             packages = self.request_to_queryset(request)
+            page_no = int(request.GET.get("page", 1))
+            packages = Paginator(packages, 50).get_page(page_no)
             context["packages"] = packages
+            context["searched_for"] = urlencode(
+                {param: request.GET[param] for param in request.GET if param != "page"}
+                )
 
         return render(request, self.template_name, context)
 
@@ -52,9 +59,6 @@ def request_to_queryset(request):
         if len(request.GET["name"]):
             query["name"] = request.GET["name"]
 
-        if request.GET["type"] and request.GET["type"] != "*":
-            query["type"] = request.GET["type"]
-
         if len(request.GET["version"]):
             query["version"] = request.GET["version"]
 
@@ -67,7 +71,6 @@ class VulnerabilitySearchView(View):
 
     def get(self, request):
         context = {"form": forms.VulnerabilitySearchForm()}
-        print(request.GET)
         if request.GET:
             vulnerabilities = self.request_to_queryset(request)
             pages = Paginator(vulnerabilities, 50)