discourse/spec/lib/plugin
Sam 795e6d72a4
FEATURE: modifier API for plugins (#20887)
Introduces a new API for plugin data modification without class-based extension overhead.

This commit introduces a new API that allows plugins to modify data in cases where they return different data rather than additional data, as is common with filtered_registers in DiscoursePluginRegistry. This API removes the need for defining class-based extension points.

When a plugin registers a modifier, it will automatically be called if the plugin is enabled. The core will then modify the parameter sent to it using the block registered by the plugin:
 
```ruby
DiscoursePluginRegistry.register_modifier(plugin_instance, :magic_sum_modifier) { |a, b| a + b }
sum = DiscoursePluginRegistry.apply_modifier(:magic_sum_filter, 1, 2)
expect(sum).to eq(3)
```

Key features of these modifiers:

- Operate in a stack (first registered, first called)
- Automatically disabled when the plugin is disabled
- Pass the cumulative result of all block invocations to the caller
2023-03-30 14:39:55 +11:00
..
filter_manager_spec.rb DEV: Apply syntax_tree formatting to `spec/*` 2023-01-09 11:49:28 +00:00
instance_spec.rb FEATURE: modifier API for plugins (#20887) 2023-03-30 14:39:55 +11:00
metadata_spec.rb DEV: Use proper wording for contexts in specs 2022-08-04 11:05:02 +02:00