WordPress Plugin Creation Tutorial – Simplest way

Today I asked myself how to explain to a junior, how to create a wordpress plugin, the simplest way. Without the inclusion of complex structures with public folder, includes, ….., but something very very simple.

Below I will explain how to create a plugin to manage some date, in this example is a Sport Race:
– Create Sport Race
– Insert members of a Sport Race
– Show table with Sport Race, and manage data (bulk delete)
– Show table with Sport Race, and manage data (bulk delete)
– Upload media using WordPress System (media manager of wordpress)

You can download it on: GITHUB

The structure of the project in the Plugin name directory is:

As you can see, a simple list of file with no directory

My project as two section: Sport Race and Members
Each section is composed by two file: _page.php and _table.php
And a file of system: plugin_activation.php

For example now analyze two file: sportrace_page.php and sportrace_table.php

For the sportrace_table.php will explain in the next article how to create a table, now take a look at file, is very simple.
For now i will explain how to use it in the sportrace_page.php

At top of page we put

For the inclusion of table put:

In the plugin_activation.php you can find the mysql create query and the menu inclusion!

Let’s start to create your wordpress plugin! Simple and Fast!

Ebay OAuth 2 Generate Token and Refresh – PHP

Today i will show to you how to use a OAuth 2 on Ebay, so how you can take your token, and then use it.

At first you must to register on https://developer.ebay.com

Then you must to set your Application on (Sandbox/Test or Production, in this guide i show to you Production procedure) https://developer.ebay.com/my/keys

After you must to have a situation like this:

Now we have:
– Client ID
– Dev ID
– Client Secret

We need:
– Authorization Code
– Access Token
– Refresh Token

Authorization Code

At first we must to generate the Authorization Code, and for this procedure we must to paste an url on the browser and copy the query string “code”.
So click on the “User token link”

Click on “Get a Token from eBay via Your Application”

Then you must to “Add eBay Redirect URL”
So you generate your app details, you can see the
“Your branded eBay Production Sign In (OAuth)” or if sandbox (test)
“Your branded eBay SandboxSign In (OAuth)”

Copy the link, that is like:

https://auth.ebay.com/oauth2/authorize?client_id=App-PRD-hhhhhf72-3hhb&response_type=code&redirect_uri=YourName-App–okllp&scope=https://api.ebay.com/oauth/api_scope https://api.ebay.com/oauth/api_scope/sell.marketing.readonly https://api.ebay.com/oauth/api_scope/sell.marketing https://api.ebay.com/oauth/api_scope/sell.inventory.readonly https://api.ebay.com/oauth/api_scope/sell.inventory https://api.ebay.com/oauth/api_scope/sell.account.readonly https://api.ebay.com/oauth/api_scope/sell.account https://api.ebay.com/oauth/api_scope/sell.fulfillment.readonly

Put this link on your browser, and login with your ebay account, so then you must to redirect on another page that sayd to you that the application has grant, and in the url bar you find your authorization code.


Access Token and Refresh Token

Now with our authorization code, we call this url to take our access and refresh token.
For this call we need the authorization header, and create a base64 encode with clientID and certID.
And then in the parameter set Authorization code and RuName

Why we have access token and refresh token?

We use Access Token for all the api request on eBay service.
We use Refresh Token to regenerate a Access Token.

Access token is valid 2 hour, but Refresh Token is valid 18 months.

How can i refresh my access token?

You must to take a call to this service, passing your refresh code, and the service return to you your new access token

I suggest to save your Access Token and Refresh Token on Database.

At the end my eBay API Simple Class