Lesson 6: Validation & Error Handling

Overview

Introduction

Welcome to lesson six! During this lesson you will continue work on the project you started in the previous lesson. You will learn how to add validation to your routes, and how to handle errors in your routes.

Topics for this lesson:

Validation
Error Handling

Have Feedback?

Learning Material

Resources for this lesson are accessible to you in this repository

The following learning material may be helpful but is not required. Please reference the syllabus for more details.

Team Assignment

Overview

Purpose: Gain exposure to Mongoose, which is widely used in industry in association with MongoDB.
Task: Complete the assignment.

Your team assigment this lesson will give you experience working with a complete RESTful API that uses MongoDB and Mongoose.

You may use the code from your completed lesson 04 project, or from this repository.
Have a member of your team set up the MongoDB connection.
Discuss as a group what validation and what types of error handling could be added to the API.
Add error handling and validation to each route (either divide and conquer, or do pair programming).
Use a REST client to test your routes as you work.
Once completed, review the sample solution below and compare or contrast your findings.
Use the I-Learn quiz to report your participation in this activity.

Personal Assignment

Overview

Purpose: Gain experience performing CRUD operations
Task: Complete the assignment

Learning Objectives

By the end of this assignment the student will be able to do the following:

Create PUT and DELETE API endpoints
Incorporate data validation into Node.js application
Incorporate error handling into Node.js application
Document API routes throughout project development

Assignment Description

For this assignment, you will build on the project you started in the previous lesson. Your tasks are as follows:

Add PUT and DELETE routes to your API. Verify in MongoDB that these work as intended.
Add validation to your routes
Add error handling to your routes
Be sure to update your API documentation to include these news routes
Push to GitHub.
Publish to Render.
Create a brief video demonstrating the functionality of your assignment. Upload it to YouTube (public or unlisted).
Submit GitHub, Render, and YouTube links in I-Learn.
Be sure to review the rubric below to see how you will be graded on this assignment.

Rubric

Criteria	Weight	Mastery	Proficient	Developing	Beginning	Missing/Incomplete
		100%	90%	78%	65%	0%
API Endpoints (Graded via YouTube)	30%	Meets Proficient criteria. The PUT returns 204 status and the DELETE returns a 200 status	Meets Developing criteria and performs at least one PUT request. MongoDB is modified	Meets Beginning criteria and performs at least one DELETE request. MongoDB is modified	Video shows PUT and DELETE API endpoints being tested on Render	Render link or YouTube link not submitted; or no evidence of API endpoints or Render connection
Data Validation (Graded via YouTube)	25%	Meets Proficient criteria and each route has data validation, and returns some type of 400 or 500 error if data requirements aren't met	Meets Developing criteria and data validation is being used in each route in project (from previous lesson: GET and POST)	Meets Beginning criteria and data validation is being used in each route for this assignment (PUT and DELETE)	Node project has evidence of data validation (for example: checks for at least one variable's existence, or for a specific data type/rule before continuing)	GitHub link or YouTube link not submitted; or no evidence of data validation
Error Handling (Graded via YouTube)	25%	Meets Proficient criteria and each route has error handling, and it returns some type of 400 or 500 status if error is caught	Meets Developing criteria and error handling is being used in each route in project (from previous lesson: GET and POST)	Meets Beginning criteria and error handling is being used in each route for this assignment (PUT and DELETE)	Node project has evidence of error handling (for example: at least one try/catch)	GitHub link or YouTube link not submitted; or no evidence of error handling
Update API Documentation (Graded via YouTube)	20%	Meets Proficient criteria and contains documentation for each route in the application	Meets Developing criteria and the API documentation can test the endpoints on Render	Meets Beginning criteria and at least one of the following HTTP request types are present in the documentation: GET all, GET by id, PUT, POST, and DELETE	The swagger.json file is present (or Apollo server link for GraphQL)	Render, or YouTube links not submitted; or no evidence of API documentation

Lesson 6: Validation & Error Handling

Overview

Introduction

Topics for this lesson:

Learning Material

The following learning material may be helpful but is not required. Please reference the syllabus for more details.

Validation

Error Handling

Team Assignment

Overview

Personal Assignment

Overview

Learning Objectives

Assignment Description

Rubric

API Endpoints

Data Validation

Error Handling

Update API Documentation