OnContentBeforeSave usage example

Here is an example of how to use the `onContentBeforeSave` event:

php
function onContentBeforeSave($context, $article, $isNew) {
    // Perform any necessary checks or modifications to the $article data
    // Return true to allow the item to be saved, or false to abort the save
    return true;
}

In this example, the `$context` parameter specifies the context of the content being saved, the `$article` parameter is the data being saved, and the `$isNew` parameter is a boolean indicating whether the content is being created or updated.

Parameters

- $context: The context of the content being saved, which includes the component name and view or the name of the module (e.g., `com_content.article`).
- $article: A reference to the `JTableContent` object that holds the article data.
- $isNew: A boolean indicating whether the content is being created (`true`) or updated (`false`).

Return Value

The `onContentBeforeSave` event should return a boolean value. If `true`, the item will be saved; if `false`, the saving process will be aborted.

Example Usage

Here is a more detailed example of how to use the `onContentBeforeSave` event:

php
function onContentBeforeSave($context, $article, $isNew) {
    // Check if the article is being created
    if ($isNew) {
        // Perform any necessary actions for new articles
        // For example, set a default category
        $article->catid = 1;
    }
    
    // Return true to allow the item to be saved
    return true;
}

This example demonstrates how to modify the article data before it is saved, specifically setting a default category for new articles.