Description: In this article, we will discuss about how Rest API is used to develop websites and mobile apps and the plugins required to install on the website to make the website work effectively.
Rest API has already created a lot of hype in the technology world and in fact, this has become a powerful tool to develop mobile apps, catchy and appealing websites, and highly customized themes. In fact, this has made WordPress as a biggest application framework. Also, many companies are evincing interest in using Rest API for their WordPress websites. This helps the developers to create a user-friendly website that helps the organizations get high traffic and sales. The below WordPress rest API tutorial will help the audience understand how to use Rest API for their WordPress website.
Basically, the success and mars of a business totally relies on their website. So, the website that is easy to use, has a high retention rate while the website that is difficult to access and confusing will have high bounce rates.
Ideally, the Rest API enables the developers to decouple the front end of the underlying WordPress package, thus helping to develop sensational mobile apps, customized themes and best implementation that was never seen before. Basically, implementing with this package allows the developers to keep the bugs at bay. In fact, the companies who have successfully used Rest API is developing apps and dynamic website as this is believed as a boon and a breakthrough in application framework. However, it is important for a person to have a wealth of experience and extensive knowledge on WordPress and PHP to understand Rest API and use it.
Basically, to use Rest API, the developer should download Rest API plugin and have the latest version of WordPress. It is important for you as a developer to have at least superficial knowledge on WordPress HTTP API to make calls. First, you need to create a local WordPress installation to extract the posts from the website that is live with the help of Rest API. You need to make sure that the Rest API plugin is installed on the live website and try to build an empty widget plugin on the local website. Ideally, the code is power-packed with a test widget folder in the plugin directory. You can rename the widget folder. This folder has a plugin header and also other plugins used for creating a widget. Ideally, as a developer, you would be familiarized in creating a widget. So, you need to create the widget successfully.
In order to make requests using Rest API and receive the responses, there are a few things to consider. And, there include route used, an endpoint that has been used, required headers, base path of the API and parameters. When the API’s base path is /wp-json/wp/v2/, then the base URL would be <http://howtocreatewebsite.com/wp-json/wp/v2/>. To receive the posts, the route would be /posts and the URL to receive post would become <http://howtocreatewebsite.com/wp-json/wp/v2/posts/>.
Ideally, each route has umpteen end points and each end point is identified using HTTP method. The route to an article would be /posts/777. For this route, there are three end points associated. There include GET, which will recover the posts, PUT, this command will update the post, Delete, this command will delete the posts on the website. Using HTTP API, developers can retrieve all the posts with just a single line of code. Using this Rest API, you can build mobile apps for your ecommerce stores that are compatible to work on both iOS and android supporting mobile devices and is easy to interact with the WordPress website. To be precise the apps developed should allow the customers to shop, add items to the cart, and track order while allowing the website owners to manage the payments and shipments with ease. Ideally, this Rest API will turn the WordPress platform into an app platform, thus allowing your site work on desktop computers as well as on the mobile devices.
What can you do more with Rest API as per the WordPress rest API tutorial?
There are three important points that one has to know while using Rest API. And, there include caching responses, authentication, and discover.
This cache response will not flood the server with too many calls when not in need. Basically, the posts that are listed on the website, will not change in a jiffy. And, caching the posts for a day or at least an hour would be perfect. In case, if you are not able to open the posts on the website that you have opened two days ago, you can open in cache to view the same post. There are many approaches to increase the cache responses. Developers can use JP REST API CACHE, which is packed with composer library, native transients, and plugins. The best part of the transient is that, it retains the data until the expiry date. Though, after the expiry date, the data goes into the database, but still you can use a few setups to store the data in the memory more swiftly like never before. So, when the posts are recovered, they are put in transient by setting the expiry time for an hour. You can retrieve the posts until the expiry time from the database. However, after the expiry time, the posts are recovered from the other sources and are again put into transient.
It is important for you to authenticate while handing the requests, especially the external requests. Basically, there are two options available for authentication. There include basic authentication and OAuth.
- Basic authentication: This should be used in the production, as it is highly vulnerable, since you need to send your credentials (username and password) whenever you make a request. However, this is the best method for testing, but not for real-time use. Many people have no clue of how to enable an authentication. To enable basic authentication, you need to install plugin onto your website. Once, the plugin is installed successfully, you can go ahead and make authentic calls. Ideally, it is quite easy to make changes to the data using Rest API.
- OAuth authentication: Even to use this method, you need to install the plugin on the website. When the API is merged completely, then this plugin is integrated and you do not need to install separate plugins. You can use WP-CLI and WP Client CLI command extensions to install and by following the instructions.
It is important for the developer to gain extensive knowledge about the discovery page by going through the WordPress rest API tutorial. This page has various methods that help you to interact with the types, media, Meta data, users and other options available on this page. As a developer, it is important for you to explore and gain knowledge on Rest API. Though, there are a few drawbacks with Rest API such as difficult to delete the users and other glitches, but this is very helpful for the developer to make your WordPress websites work effectively.