Add NodeAction: an append-only log of who did what to a nodeHEADmaster

node_id/page_id/user_id are lookup and ordering only -- all three
nullify on delete, so an entry outlives its actor and its subject.
Everything that must survive those deletions lives in a mandatory
metadata jsonb written once at creation: the actor's username, the
node's human-readable name (pinned to the default locale), and
action-specific extras such as publish's title from/to.

NodeAction.record! is the single constructor, so every entry gets
the same baseline metadata without each call site re-implementing
it. occurred_at is one field for live and backfilled entries alike;
inferred_from distinguishes them -- nil means witnessed at the
moment it happened, populated names how a backfilled entry was
estimated.

Instrumented so far: publish (crediting the actual publisher,
threaded through from the controller -- previously nobody had the
act of publishing recorded anywhere), revert's discard_autosave and
destroy_draft branches, and translation destroy. publish_draft! now
runs in a transaction so the promotion and its log entry land
together. The remaining verbs follow once this mechanism has proven
itself.

2 files changed, 4 insertions, 1 deletions

diff --git a/app/controllers/nodes_controller.rb b/app/controllers/nodes_controller.rb
index bff1733..9c5d228 100644
--- a/app/controllers/nodes_controller.rb
+++ b/app/controllers/nodes_controller.rb
@@ -147,7 +147,7 @@ class NodesController < ApplicationController
   end
 
   def publish
-    @node.publish_draft!
+    @node.publish_draft!(current_user)
     flash[:notice] = "Draft has been published"
     redirect_to node_path(@node)
   end
diff --git a/app/controllers/page_translations_controller.rb b/app/controllers/page_translations_controller.rb
index 38a7c4f..be4f488 100644
--- a/app/controllers/page_translations_controller.rb
+++ b/app/controllers/page_translations_controller.rb
@@ -63,6 +63,9 @@ class PageTranslationsController < ApplicationController
     draft.translations.where(:locale => @locale).delete_all
     draft.reload
 
+    NodeAction.record!(:node => @node, :page => draft, :user => current_user,
+                        :action => "translation_destroy", :locale => @locale)
+
     flash[:notice] = "#{@locale.upcase} translation removed from the draft. Publish to make this permanent."
     redirect_to node_path(@node)
   rescue LockedByAnotherUser => e