How to use render_block_data filter in WordPress

Example 1: Modifying Block Defaults

Imagine you want to tweak the default block data to fit your website’s needs. This example shows how you can modify the block data using the render_block_data filter.

    function weplugins_modify_render_block_data_defaults($parsed_block, $source_block, $parent_block) { 
        // Update the $parsed_block variable according to your website requirements.
        return $parsed_block; 
    }
    // Add the filter
    add_filter("render_block_data", "weplugins_modify_render_block_data_defaults", 10, 3);
    

Example 2: Removing a Hook Callback

Sometimes, you might need to remove a hook callback. Here’s how to use remove_filter to achieve this.

    // Remove the filter
    remove_filter("render_block_data", "weplugins_modify_render_block_data_defaults", 10, 3);
    

Make sure to provide the same callback function name, priority, and number of arguments while removing the hook callback.

Example 3: Conditional Block Modification

Let’s say you want to change block data based on certain conditions. This example illustrates how you can conditionally modify the block data.

    function weplugins_conditional_render_block_data($parsed_block, $source_block, $parent_block) { 
        if (some_condition) {
            // Modify $parsed_block conditionally
        }
        return $parsed_block; 
    }
    // Add the filter
    add_filter("render_block_data", "weplugins_conditional_render_block_data", 10, 3);
    

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