Handle None in UI

Signed-off-by: Tushar Goel <tushar.goel.dav@gmail.com>

Author: TG1999

vulnerabilities/templates/advisory_detail.html

@@ -214,9 +214,20 @@
                     {% for severity in severities %}
                     <tr>
                         <td class="wrap-strings">{{ severity.scoring_system }}</td>
-                        <td class="wrap-strings">{{ severity.value }}</td>
-                        <td class="wrap-strings"><a href="{{ severity.url }}" target="_blank">
+                        <td class="wrap-strings">
+                            {% if severity.value is not None %}
+                            {{ severity.value }}
+                            {% else %}
+                            {{ "" }}
+                            {% endif %}
+                        </td>
+                        <td class="wrap-strings">
+                            {% if severity.url is not None %}
+                            <a href="{{ severity.url }}" target="_blank">
                                 {{ severity.url }}<i class="fa fa-external-link fa_link_custom"></i></a>
+                            {% else %}
+                            {{ "" }}
+                            {% endif %}
                         </td>
                     </tr>
                     {% empty %}
@@ -483,7 +494,11 @@
             <div class="tab-div content" data-content="severities-vectors">
                 {% for severity_vector in severity_vectors %}
                     {% if severity_vector.vector.version == '2.0'  %}
-                        Vector: {{ severity_vector.vector.vectorString }} Found at <a href="{{ severity_vector.origin }}" target="_blank">{{ severity_vector.origin }}</a>
+                        Vector: {{ severity_vector.vector.vectorString }} 
+                        {% if severity_vector.origin %}
+                        Found at 
+                        <a href="{{ severity_vector.origin }}" target="_blank">{{ severity_vector.origin }}</a>
+                        {% endif %}
                         <table class="table is-bordered is-striped is-narrow is-hoverable is-fullwidth gray-header-border">
                           <tr>
                             <th>Exploitability (E)</th>

vulnerabilities/templates/package_details_v2.html

@@ -118,7 +118,11 @@
                                         Risk score
                                     </td>
                                     <td class="two-col-right">
+                                        {% if package.risk_score is not None %}
                                         {{package.risk_score}}
+                                        {% else %}
+                                        {{""}}
+                                        {% endif %}
                                     </td>
                                 </tr>
                             </tbody>

vulnerabilities/templates/packages_v2.html

@@ -62,7 +62,13 @@
                                     target="_self">{{ package.purl }}</a>
                             </td>
                             <td>{{ package.is_vulnerable|yesno:"Yes,No" }}</td>
-                            <td>{{ package.risk_score }}</td>
+                            <td>
+                                {% if package.risk_score is not None %}
+                                {{ package.risk_score }}
+                                {% else %}
+                                {{ "" }}
+                                {% endif %}
+                            </td>
                         </tr>
                     {% empty %}
                         <tr>