MRF: create MRF.Policy behaviour separate from MRF module

[akkoma] / docs / configuration / mrf.md

diff --git a/docs/configuration/mrf.md b/docs/configuration/mrf.md
index 31c66e098a33e14f05455474936424232f252910..5618634a20d4a2ffedb7866de0c5be8981038b91 100644 (file)
--- a/docs/configuration/mrf.md
+++ b/docs/configuration/mrf.md
@@ -82,7 +82,7 @@ For example, here is a sample policy module which rewrites all messages to "new
 ```elixir
 defmodule Pleroma.Web.ActivityPub.MRF.RewritePolicy do
   @moduledoc "MRF policy which rewrites all Notes to have 'new message content'."
-  @behaviour Pleroma.Web.ActivityPub.MRF
+  @behaviour Pleroma.Web.ActivityPub.MRF.Policy
 
   # Catch messages which contain Note objects with actual data to filter.
   # Capture the object as `object`, the message content as `content` and the
@@ -133,3 +133,26 @@ config :pleroma, :mrf,
 ```
 
 Please note that the Pleroma developers consider custom MRF policy modules to fall under the purview of the AGPL. As such, you are obligated to release the sources to your custom MRF policy modules upon request.
+
+### MRF policies descriptions
+
+If MRF policy depends on config, it can be added into MRF tab to adminFE by adding `config_description/0` method, which returns a map with a specific structure. See existing MRF's like `lib/pleroma/web/activity_pub/mrf/activity_expiration_policy.ex` for examples. Note that more complex inputs, like tuples or maps, may need extra changes in the adminFE and just adding it to `config_description/0` may not be enough to get these inputs working from the adminFE.
+
+Example:
+
+```elixir
+%{
+      key: :mrf_activity_expiration,
+      related_policy: "Pleroma.Web.ActivityPub.MRF.ActivityExpirationPolicy",
+      label: "MRF Activity Expiration Policy",
+      description: "Adds automatic expiration to all local activities",
+      children: [
+        %{
+          key: :days,
+          type: :integer,
+          description: "Default global expiration time for all local activities (in days)",
+          suggestions: [90, 365]
+        }
+      ]
+    }
+```