How do I use my validator in the plugin?

[Dev_Work (Aleksandr)]

@Dev_Work

key as ‘validator’ there is

and even such an example works

plugins:
  my_custom_username_validation:
    default: 'system'
    validator: 'UsernameSettingValidator'

Beginner's Guide to Creating Discourse Plugins Part 3: Custom Settings

I was looking how to create a site setting that validates a username, but found there’s a username type to do this. Here the list of site setting types we have today: email username integer regex string list enum Also, you can do custom validations for your plugin settings, it accepts a validator field that expects a Ruby class. You use it like this. plugins: my_custom_username_validation: default: 'system' validator: 'UsernameSettingValidator' You can check the UsernameSettingVal…

discourse/discourse/blob/main/lib/validators/username_setting_validator.rb