Lesson 6: Task Manager API Part 2

Learning Materials

This week begins at 1:29 of this video, and continues until the end of the task manager project, at 3:07:18 of the video.

In this lesson you will continue to develop the Task Manager API, testing with Postman as you go. You will add:

• Input Validation
• Error Handling
• Additional CRUD Operations

Assignments

Coding Assignment

Create a new git branch called week6. This should be created when the week5 branch is active, so that it adds to week 5’s work. If you’ve made any changes to the week5 branch due to reviews on your PR, make sure to update your week6 branch by following the instructions from Lesson 4 Continue to work in the node-express-course/03-task-manager/starter directory. You duplicate the work of the instructor in the video.

Additional Assignment

Create a file in the starter directory called QuizAnswers2.txt. Put answers to the following questions in it.

1. In this lesson, you created a middleware function called asyncWrapper. Why?
2. Suppose that you want to make sure that both a status code and an error message are sent back to the user when they request the URL for a task that does not exist. Assume that you’ve created a CustomAPIError class and an error handler that references that class. Complete the code:

   const getTask = asyncWrapper(async (req, res, next) => {
     const { id: taskID } = req.params;
     const task = await Task.findOne({ _id: taskID });
     if (!task) {
       // your code here
     }
     res.status(200).json({ task });
   });

As you will see in the lessons that follow, you do not have to always create the asyncWrapper middleware, because you can instead use an NPM package called express-async-errors that provides the same capability.

Mindset Assignment

Your mindset assignment for this week can be found here: Debugging

Submitting Your Work

When you’ve completed your Coding Assignment and Mindset Assignment this week, submit all of your work using:

Homework Assignment Submission Form