Implement My Tickets view in public helpdesk

Note: This is a breaking change as it forces pagination on the API endoints.
This should have been done from the start as the API without pagination is
useless when there are large numbers of tickets.

helpdesk/serializers.py

@@ -70,6 +70,46 @@ class DatatablesTicketSerializer(serializers.ModelSerializer):
         return obj.kbitem.title if obj.kbitem else ""
 
 
+class PublicTicketListingSerializer(serializers.ModelSerializer):
+    """
+    A serializer to be used by the public API for listing tickets. Don't expose private fields here!
+    """
+    ticket = serializers.SerializerMethodField()
+    submitter = serializers.SerializerMethodField()
+    created = serializers.SerializerMethodField()
+    due_date = serializers.SerializerMethodField()
+    status = serializers.SerializerMethodField()
+    queue = serializers.SerializerMethodField()
+    kbitem = serializers.SerializerMethodField()
+
+    class Meta:
+        model = Ticket
+        # fields = '__all__'
+        fields = ('ticket', 'id', 'title', 'queue', 'status',
+                  'created', 'due_date', 'submitter', 'kbitem')
+
+    def get_queue(self, obj):
+        return {"title": obj.queue.title, "id": obj.queue.id}
+
+    def get_ticket(self, obj):
+        return str(obj.id) + " " + obj.ticket
+
+    def get_status(self, obj):
+        return obj.get_status
+
+    def get_created(self, obj):
+        return humanize.naturaltime(obj.created)
+
+    def get_due_date(self, obj):
+        return humanize.naturaltime(obj.due_date)
+
+    def get_submitter(self, obj):
+        return obj.submitter_email
+
+    def get_kbitem(self, obj):
+        return obj.kbitem.title if obj.kbitem else ""
+
+
 class FollowUpAttachmentSerializer(serializers.ModelSerializer):
     class Meta:
         model = FollowUpAttachment