How to use format_for_editor filter in WordPress

format_for_editor filter

Filters the text after it is formatted for the editor.

To use the `format_for_editor` filter, first, you have to register it using `add_filter`. You can write this code into the `functions.php` of your activated theme or in a custom WordPress Plugin.

We at *WePlugins* always prefer to create a custom WordPress Plugin while using hooks so nothing breaks when you update your WordPress Theme in the future.

In the below live example, we have defined a function `weplugins_modify_format_for_editor_defaults` which takes 2 parameters and we registered using `add_filter`. The first parameter `format_for_editor` is the name of the hook, The second parameter `weplugins_modify_format_for_editor_defaults` is the name of the function which needs to be called, the third parameter is the priority of calling the hook if the same hook is used multiple times and the last parameter is the number of arguments (if any) to be passed in the registered function.

Sometimes, you have to remove a registered hook so you can use `remove_filter` to remove the `format_for_editor` filter.

Parameters

Below are the 2 parameters required to use this hook.

• $text: (string) The formatted text.
• $default_editor: (string) The default editor for the current user. It is usually either ‘html’ or ‘tinymce’.

Live Examples

Example 1: Basic Modification

This example demonstrates how to modify the formatted text for the editor.

  function weplugins_modify_format_for_editor_defaults($text, $default_editor) { 
      // Update the $text variable according to your website requirements and return this variable. You can modify the $text variable conditionally too if you want.
      return $text; 
  }
  // add the filter
  add_filter("format_for_editor", "weplugins_modify_format_for_editor_defaults", 10, 2);
  

Example 2: Conditional Modification Based on Editor

This example shows how you can modify the text conditionally based on the default editor.

  function weplugins_modify_format_for_editor_based_on_editor($text, $default_editor) { 
      if ($default_editor == 'tinymce') {
          $text .= ' Additional content for TinyMCE editor.';
      } else {
          $text .= ' Additional content for HTML editor.';
      }
      return $text; 
  }
  // add the filter
  add_filter("format_for_editor", "weplugins_modify_format_for_editor_based_on_editor", 10, 2);
  

Example 3: Advanced Text Formatting

This example applies advanced text formatting before displaying it in the editor.

  function weplugins_advanced_text_formatting($text, $default_editor) { 
      // Apply advanced formatting rules
      $text = strtoupper($text); // Convert text to uppercase as an example
      return $text; 
  }
  // add the filter
  add_filter("format_for_editor", "weplugins_advanced_text_formatting", 10, 2);
  

To remove a hook callback, use the example below.

  remove_filter("format_for_editor", "weplugins_modify_format_for_editor_defaults", 10, 2);
  

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

Contact Us

If you need any customization or have trouble using this hook, please contact us and we’d be happy to assist you.