Back To Course Home

Building your own API with Rails

0% completed

Getting Started

Introduction to the Course The Marketplace Application Initializing the App

The API

API Structure Routes Constraints and Namespaces Versioning the API Quiz Yourself: The API

User Model

Generating the User Model Migration File Validating the User Model Unit Tests Password Hash Build Endpoints Show Users Create Users Update Users Destroy Users Test Our Resources with curl Quiz Yourself: User Model

Authenticating the Users

Stateless Session JWT Presentation Setting Up the Authentication Token Token’s Controller Create Tokens Logged User Authentication with the Token Quiz Yourself: Authenticating the Users

User's Products

Generating the Product Model Migration File Validating the Product Model Unit Tests Product's Endpoints Show Products List Products Create Products Update Products Destroy Products Feed the Database Quiz Yourself: Product Model

Building JSON

API Output Presentation of JSON:API Serialize User Serialize Product Serialize Associations Theory of the Injection of Relationships Application of the Injection of Relationships Retrieve User’s Products Search for Products Search Engine Quiz Yourself: Building JSON

Placing Orders

The Order Model Validating the Order Model The Placement Model Build Endpoints List Orders Show Orders Create Orders Send an Order Confirmation Email Quiz Yourself: Order and Placement Model

Improving Orders

Decrementing Product Quantity

Add quantity to the Placement Model

Extending the Placement Model

Validate Quantity of Products

Updating the Total

Quiz Yourself: Improve Order Placement

Optimizations

Pagination Paginate Products List Paginate Orders List Refactoring Pagination API Caching N+1 Queries Prevention of N + 1 Requests Activation of CORS Quiz Yourself: Optimization Techniques

Wrap up

Test the Application Conclusion

Appendix

Setting Up a Development Environment

Decrementing Product Quantity

Learn how to keep a record of products' stock.

This chapter will take care of some validations on the Order model that make sure it is placeable. We will think about the following concerns:

How to decrement the current product quantity when an order is placed.
What happens when products are not available?

We’ll probably need to update the JSON output for the orders a little, but we can save that for now. Let’s dive in and get coding.

Add `quantity` attribute to products

Define and run migration

Add quantity attribute to the Product model

We will update the product quantity on this first stop to ensure every order will deliver the actual product. Currently, the Product model ...

Get hands-on with 1400+ tech skills courses.