Add select by action id

models/action.go

@@ -20,3 +20,8 @@ type Action struct {
 func (m *Model) Actions() ([]*Action, error) {
 	return m.SelectActions()
 }
+
+// Action returns a single action from its ID
+func (m *Model) Action(id int) (*Action, error) {
+	return m.SelectActionByID(id)
+}