Building APIs with Node.js by Caio Ribeiro Pereira

By Caio Ribeiro Pereira

At present, we are living in a interval within which nearly all of clients use types of units to connect with the net. the most well-liked units are smartphones, pills and notebooks. constructing structures for various forms of units calls for the paintings of creating net companies, additionally recognized via the identify of API (Application application Interface).

Basically, the APIs are back-end platforms which are designed to paintings purely with info in a centralized demeanour, permitting client-side purposes to be constructed individually, to have a special interfaces to the ultimate consumer. those client-side purposes tend to be cellular apps, computing device purposes or net apps.

Since 2010 Node.js more and more proved to be a very good platform to resolve many difficulties, particularly for development leisure APIs. The single-thread structure that plays non-blocking I/O operating on best of JavaScript - that's a really current language in all present browsers - confirmed reliable functionality within the processing of many type of applications.

There are a few instances of enormous businesses, similar to LinkedIn and PayPal, which considerably kept expenditures with servers migrating a few of their initiatives to Node.js.

In addition, one other good thing about utilizing the Node.js, which captivated many builders, is the low studying curve. in any case, who has labored with internet improvement have already got at the least a easy realizing of the JavaScript language.

In this publication, you will research in perform tips to construct scalable APIs in Node.js platform via writing based codes utilizing ECMAScript 2015 (aka ES6) and a few well known frameworks like convey, Passport, ApiDoc, Mocha, Helmet and more.

The venture should be built-in with a SQL database via Sequelize.js and, in any case, you will construct a unmarried web page software utilizing basically Vanilla JavaScript to consumes the API's facts.

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Extra resources for Building APIs with Node.js

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To test them, you can follow this simple list: • • • • • Method GET, route http://localhost:3000/tasks¹¹; Method GET, route http://localhost:3000/tasks/1¹²; Method GET, route http://localhost:3000/tasks/2¹³; Method PUT, route http://localhost:3000/tasks/1¹⁴ using the body: {"title": "Work"}; Method DELETE, route http://localhost:3000/tasks/2¹⁵; You can also test the user’s endpoints, if you like. ¹¹http://localhost:3000/tasks ¹²http://localhost:3000/tasks/1 ¹³http://localhost:3000/tasks/2 ¹⁴http://localhost:3000/tasks/1 ¹⁵http://localhost:3000/tasks/2 CRUDify API resources 49 Conclusion Congratulations!

Doing this, we finish this authentication step, making our application reliable and safer. The encryption of user passwords will be performed by the module bcrypt. 5 --save Now, let’s edit the Users model including the function hooks, which executes functions before or after a database operation. In our case, will be included a function to be executed before registering a new user, via the function beforeCreate() to use the bcrypt to encrypt the user’s password before save it. A new function inside the classMethods will be included as well.

This sync function performs, if necessary, alterations on database tables, according to what is going to be setup on the models. sync() function, to ensure this action will be executed before the server starts. get("port")}`); }); }); }; To test those modifications, restart the server. If everything is ok, your application must work as it was working before, after all, no visible modification was made, only some adjustments were made to establish a connection between the API and SQLite3. In the next section, we’ll create all necessary models for our application, and this is gonna be a huge impact for our project.

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