The WordPress JSON Surplus API

The WordPress JSON Surplus API

WordPress has a big market share of the web. Surplus APIs are a growing technology and a big chance for developers. Knowing how to create APIs and how to consume them gives you a superb advantage. A Surplus API can be consumed everywhere. On mobile applications, on front-end (web apps) or any other devices that have access on the netwerken.

Maybe your customer already has a webpagina that is running on WordPress and also wants a mobile application. You can create the API using custom-built code and relying on the database but that can cause a lotsbestemming of frustration. Maybe they&rsquo,re te a hurry and want the API spil soon spil possible. Te WordPress, it is spil plain spil installing a plugin.

Te this article, wij will give a común overview of the JSON Surplus API plugin. Wij will voorkant how this plugin works and the basic philosophy of the Surplus architecture.

Prep

Grab the latest version of JSON Surplus API on WordPress plugin directory. Install and activate it. Now you have a Surplus API ready to use. You need a Surplus Client to test and explore it. There are many contraptions for that job. Don&rsquo,t limit yourself to just thesis four instruments. There are many other Surplus Clients.

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The very first one is cURL. It is a guideline line implement that can send different requests to the given endpoint. It is not only Surplus API related but it is a militar HTTP Request device. Many test examples on other articles are made using this instrument. It&rsquo,s the universal HTTP contraption that can be translated to any programming language.

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One of the implements I usually use is the PHPStorm Surplus Client. Spil I mainly work with this IDE when developing, it is lighter for mij using a device that I can access quicker. Many other IDE-s come with Surplus Client integrated to make Surplus API developing lighter and quicker.

The third one and the one that I very recommend is Postman. It is the easiest and more intuitive Surplus client I have everzwijn worked with. Unluckily, is only available spil a Chrome extension. If you are using Firefox there is a nice extension called RESTClient.

Exploring the Surplus Architecture

The very first thing you have to do is to check if this plugin works, where is its endpoint, the almohadilla URL that holds all the information about the schema, all the Resources (Collections) and the routes. The plugin adds a fresh field called &ldquo,`Link`&rdquo, on the header so check for that te the header of the Response. If you use Postman or any other GUI clients just inspect the header. If you use cURL execute this guideline to your homepage:

The header option grabs only the header. Te my case the endpoint is locorregional.wordpress.dev/wp-json . If you left the permalink to it&rsquo,s default value on the settings, then you may have the listig value something like this: http://tópico.wordpress.dev/?json_route=/ .

It switches only the rewrite rules but not any other essential switches. Everything is the same te the two cases.

The index endpoint (or API endpoint) is the kicking off point. You can explore the entire API from there. It gives you all the information about the API. It gives information about the Collections, Entities and how they are mapped to routes. Make a GET request to your endpoint and see what it comes back. On Surplus Clients it&rsquo,s effortless because you are dealing with GUI interface. Let&rsquo,s see how is done using cURL.

Te my case it comebacks a big JSON verkeersopstopping that looks like this.

Actually the response is too long so I eliminated most of it. The index route (endpoint) gives gives information about the title of the webpagina, the description and it&rsquo,s URL. All the Routes that you can find on the API are also mapped te the &lsquo,routes&rsquo, field. posts, users, media, pages are Collections. Collections are a group of Entities. An Entity is a single postbode or a single pagina with its ID.

Let&rsquo,s say wij want to see the latest posts. The endpoint for the Collection is api_endpoint/posts . This comes back the latest posts. The Entity is api_endpoint/posts/ID with the given ID spil an argument. Using cURL, the guideline would be:

Retrieving gegevens is a good thing but there are times when wij want to postbode gegevens.

Postbode, UPDATE, DELETE

I want to share some problems that I got when attempted to postbode or delete gegevens. Very first, you need to authenticate yourself. There are three ways you can authenticate.

The very first one is using the cookies. This is one method not widely used when working with APIs. When a user navigates on the web, pages tend to store gegevens on users side. The cookie method here is a bit different by using the nonces method.

The 2nd one is the OAuth method. This plugin implements the version 1.0a of OAuth. This method is widely used. Google, Facebook, Twitter and Flickr use OAuth for third party authentication. OAuth is te version two but they have chosen to use version 1.0a. There is a big debate for the version two. Some big companies didn&rsquo,t shift te version two for different reasons but mainly worried about security.

The third one is the Basic Authentication. Using this method you have to send your username and password each time you make a request. Client contraptions for Surplus testing usually have this method implemented themselves. This method is mainly used when developing. Is uncommonly used on production. On production consider using OAuth.

Unluckily, the Basic Authentication plugin is not updated to often. They concentrated all their efforts on the OAuth plugin. This plugin can&rsquo,t be found on wordpress.org but only on it&rsquo,s GitHub repository. You have to by hand install it. On the plugin directory execute this directive:

Alternatively visit the GitHub pagina and download the plugin and install it by hand via FTP.

Then go to the instrumentenbord and activate it. This plugin has some problems with non-Apache servers. Spil I mainly use WordPress VVV which is a Vagrant installation, it has problems because VVV comes with nginx. Switch the permalink configuration if yours is default. That worked for mij.

Now that wij have the authentication set up is time to create some posts. Postman has the basic authentication implemented. Insert the username and password if you use Postman and it will recall colchoneta 64 encoding each time it makes a request. To see if it works make a request te &lsquo,index_endpoint/users/mij&rsquo,. It comes back the information about you.

If you attempt to access this URL without using basic auth or any other authentication methods, the API will terugwedstrijd:

Let&rsquo,s attempt to make a request via cURL and also include the Basic Auth method:

The –user option makes the admin:password argument which is basically just 64 encoding of that plain text. cURL builds itself the Request headers for the Basic Auth by adding an extra field. This is what it adds te my case:

This is what is returned when I attempt to access my profile using the given credentials.

Let&rsquo,s attempt to delete one postbode. To delete one postbode wij vereiste know it&rsquo,s URL. It&rsquo,s URL is api_endpoint/posts/ID . Substitute the ID with 1 or any other postbode ID that you want. Don&rsquo,t leave behind that you should use authentication to delete something.

If using Postman or similar send the URL above (http://recinto.wordpress.dev/wp-json/posts/Four) and select the &lsquo,Delete&rsquo, request method from the dropdown list next to the URL field.

And this is what I get back:

Posting a fresh record (postbode for example) is effortless too. Create a fresh JSON opstopping with two fields. One for the title and one for the content.

Send that fresh gegevens to the Collection of that Entity that wij want to create. Reminisce that when posting fresh Entity, you should postbode it ter the Collection endpoint. Here wij used Basic Auth again. -X Postbode makes this request a Postbode Request. –data captures a verkeersopstopping that is ter that folder and sends it spil raw gegevens.

Further Exploration

Don&rsquo,t limit yourself. WordPress Surplus API team has also some other devices that are tightly integrated with this plugin. They have a Client Cli, Client JS and a Client PHP to work with your API right out of the opbergruimte. Also head overheen their documentation for deeper technical information.

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Knowing how to use this plugin is one thing but the best advice I can give te this case is: &lsquo,don&rsquo,t limit yourself&rsquo,. There is so much information out there about Surplus. Here on SitePoint wij have a nice series about building a Surplus API from scrape by Vito Tardia.

Conclusion

Creating a Surplus API on WordPress is effortless. You don&rsquo,t have to create one from scrape if you&rsquo,re using WordPress. Spil a matter of fact, the index end-point tells you everything about this plugin and how to use it. Wij covered Collections, Entities and how to manipulate some gegevens using different verbs (GET, Postbode, Waterput, DELETE).

An significant opzicht when developing is also authentication so wij covered this spil well. Consider OAuth 1.0a when developing for production. You can also use Basic Auth but OAuth is already tested and backed by a number of big companies.

What do you think about Surplus APIs on WordPress? Does it rival with the mitt crafted APIs? Do you know any other WordPress plugins about Surplus? Please let us know te the comments below.

2 thoughts on “The WordPress JSON Surplus API

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