pundit: convert posts to pundit.

app/policies/post_policy.rb

@@ -0,0 +1,68 @@
+class PostPolicy < ApplicationPolicy
+  def show_seq?
+    true
+  end
+
+  def random?
+    true
+  end
+
+  def update?
+    unbanned? && record.visible?
+  end
+
+  def revert?
+    update?
+  end
+
+  def copy_notes?
+    update?
+  end
+
+  def mark_as_translated?
+    update?
+  end
+
+  def visible?
+    record.visible?
+  end
+
+  def can_view_uploader?
+    user.is_moderator?
+  end
+
+  def can_lock_rating?
+    user.is_builder?
+  end
+
+  def can_lock_notes?
+    user.is_builder?
+  end
+
+  def can_lock_status?
+    user.is_admin?
+  end
+
+  def can_use_mode_menu?
+    user.is_gold?
+  end
+
+  def can_view_favlist?
+    user.is_gold?
+  end
+
+  # whether to show the + - links in the tag list.
+  def show_extra_links?
+    user.is_gold?
+  end
+
+  def permitted_attributes
+    [
+      :tag_string, :old_tag_string, :parent_id, :old_parent_id,
+      :source, :old_source, :rating, :old_rating, :has_embedded_notes,
+      (:is_rating_locked if can_lock_rating?),
+      (:is_noted_locked if can_lock_notes?),
+      (:is_status_locked if can_lock_status?),
+    ].compact
+  end
+end