Delve into creating, optimizing, and securing a Rails API from scratch. Gain insights into building a full-fledged, efficient Rails API, ready for immediate use.

rails.tar.gz

Routes changes

validating_the_user_model

unit_tests

show_user

migration_file

create_tokens

feed_the_database

presentation_of_JSON_API

validating_the_order_model

list_orders

decrementing_product_quantity

extending_the_placement_model

feed_the_database-2

feed_the_database-3

Setting Up the Authentication Token

validating_the_product_model

unit_tests_for_order_model

the_placement_model

decrementing_product_quantity-2

activation_of_CORS

This course is a comprehensive tutorial that will teach you the best way to build your next API with Rails. You’ll learn to create a Rails API from scratch and to optimize and secure a Rails API. By the end of this course, you’ll have a full-fledged Rails API ready to be used.

Building your own API with Rails

# Add cache store
There is currently an implementation to cache with the gem `jsonapi-serializer`, which is easy to handle. Older versions of this gem work slightly differently, but can still be used for caching.

Let's request the product list using the  `curl` command to check the current response time of the app.

import React from 'react';
import { shallow, configure } from 'enzyme';
import Adapter from 'enzyme-adapter-react-16';

configure({ adapter: new Adapter() });

import HelloWorld from './app';

var TestResult = function() {
    this.succeeded = false;
    this.reason = "";
    this.input = "";
    this.expected_output = "";
    this.actual_output = "";
}

export const executeTests = function() {

  var results = [];

  result = new TestResult();
  result.input = 'HelloWorld Component';
  result.expected_output = "span containing text 'Hello World'"

  let wrapper = shallow(<HelloWorld />);

  // Call your Challenge function here.

  let type = wrapper.type();
  let testSuccessful = true;
  let failureReason;

  if (type !== 'span') {
    testSuccessful = false;
    failureReason = "You need to render exactly one span HTML element";
  } else if (wrapper.props().children != "Hello World") {
     testSuccessful = false;
     failureReason = "You have rendered wrong message in your span element";
  }

  result.actual_output = wrapper.html();

  if (testSuccessful) {
    result.succeeded = true;
    result.reason = "Succeeded"
  } else {
    result.succeeded = false;
    result.reason = failureReason;
  }

  results.push(result);

  return results;
}


React

Dart

GoJS React

Typescript React

Vue.js

Click on the "Run" button to open a terminal. Then, open a new terminal by clicking the "$+$" button next to the "Terminal" tab. Initialize the `rails` server on the new terminal using the following: 

```
$ cd usercode/workspace/market_place_api && rails s
```
Then, switch back to the first terminal and run this command:

```text
$ curl -w 'Total: %{time_total}\n' -o /dev/null -s http://localhost:3000/api/v1/products
```
It will give us the response time of our app. The `-w` option allows us to retrieve the time of the request, `-o` redirects the response to a file, and `-s` hides the `curl` display.

By adding only one line to the serializer classes, we will see a
significant improvement in response time!

Learn how caching reduces the response time of the app.

API Caching

Getting Started

The API

User Model

Authenticating the Users

User's Products

Building JSON

Placing Orders

Improving Orders

Optimizations

Wrap up

Appendix

API Caching

Add cache store