Add helper method to paginator for determining if we're on the last page

paginator/paginator.go

@@ -82,11 +82,19 @@ func (m *Model) PrevPage() {
 // NextPage is a helper function for navigating one page forward. It will not
 // page beyond the last page (i.e. totalPages - 1).
 func (m *Model) NextPage() {
-	if m.Page < m.TotalPages-1 {
+	if !m.OnLastPage() {
 		m.Page++
 	}
 }
 
+// LastPage returns whether or not we're on the last page
+func (m Model) OnLastPage() bool {
+	if m.Page == m.TotalPages-1 {
+		return true
+	}
+	return false
+}
+
 // NewModel creates a new model with defaults
 func NewModel() Model {
 	return Model{