Building your own API with Rails

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1.Getting Started

Introduction to the Course The Marketplace Application Initializing the App

2.The API

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

3.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

4.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

5.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

6.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

7.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

8.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

9.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

10.Wrap up

Test the Application Conclusion

11.Appendix

Setting Up a Development Environment

Building your own API with Rails/

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Validating the Order Model

Validating the Order Model

Add validation rules for the Order model in the application.

We'll cover the following...

We want to validate two things for the Order model:

The value of total must be greater than zero.
The parameter total cannot be empty.

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