How to add online voting functionality to WordPress plugin

How to add online voting functionality to WordPress plugin

As one of the most popular content management systems, WordPress provides a rich plugin ecosystem that can easily extend your website function. In this article, we will explore how to add online voting functionality to a WordPress plugin. To achieve this goal, we will use WordPress core functionality and an open source plugin called "WP-Polls".

1. Download and install the "WP-Polls" plug-in
First, we need to download and install the "WP-Polls" plug-in on the WordPress website. Log in to your WordPress backend, click "Plugins" -> "Add New Plugin", and then enter "WP-Polls" in the search box. Click the "Install" button and wait for the plug-in installation to complete. After the installation is complete, click the "Activate" button to activate the plug-in.

2. Create a poll
After installing and activating the plug-in, we can find the settings menu of "WP-Polls" in the WordPress background. Click "Plugins" -> "WP-Polls" and you will see an interface that can be used to create and manage polls. Click the "Add New Poll" button, enter your poll questions and options, and save your poll.

3. Display the voting form
To display the voting form on the website, we need to insert the voting shortcode into the page or article. In the text editor of the edit page or post, insert the following shortcode:

[poll id="Poll ID"]

where "Poll ID" is assigned when the poll is created Unique identifier.

4. Style customization
The "WP-Polls" plug-in provides some default styles, but you can customize the style according to your own needs. The default style files of the plug-in can be found in the plug-in directory. You can override the default styles by creating a custom style file and calling it in your theme's functions.php file.

For example, you can create a CSS file called "custom-polls.css" and save it in the root directory of your theme. Then, add the following code in your theme’s functions.php file:

function custom_polls_styles() {

wp_enqueue_style( 'custom-polls', get_template_directory_uri() . '/custom-polls.css' );

}

add_action( 'wp_enqueue_scripts', 'custom_polls_styles' );

5. Add voting result statistics
By default, the "WP-Polls" plug-in only displays the voting form and does not display the voting results. If you want to display statistical results after voting, you can add the "result_type" parameter to the shortcode. For example:

[poll id="Poll ID" result_type="result_percentage"]

In the above example, we use the "result_percentage" parameter to display the percentage of voting results.

Code example:

/**

• Plugin Name: WP Polls Vote API
• Description: Custom API endpoint to vote for WP Polls.
• Version: 1.0.0
• Author: Your Name
• Author URI: https://www.example.com/
  */

add_action( 'rest_api_init', function () {

register_rest_route( 'polls/v1', '/vote', array(
    'methods' => 'POST',
    'callback' => 'wp_polls_custom_vote',
    'permission_callback' => 'wp_polls_vote_permissions_check',
) );

});

function wp_polls_custom_vote( $request ) {

$poll_id = $request->get_param( 'poll_id' );
$option_id = $request->get_param( 'option_id' );

// Perform the voting logic here
// ...

return array(
    'success' => true,
    'message' => 'Vote submitted successfully.',
);

}

function wp_polls_vote_permissions_check( $request ) {

// Perform any permission check here
// ...

return true;

}
?>

The above code is a custom API endpoint used to receive voting requests and execute voting logic. You can add this code snippet to your theme’s functions.php file and modify it according to your actual needs.

Summary:
Through the above steps, we can easily add online voting functionality to the WordPress plugin. By installing the "WP-Polls" plug-in, creating polls, inserting voting forms, style customization and adding voting result statistics, we can customize and implement a powerful voting system. At the same time, it is also possible to integrate voting with other systems by using custom API endpoints. I hope this article has been helpful for you to add online voting functionality to your WordPress website.

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