FIX: Support multiple moderation groups on category (#307)

See relevant core PR: https://github.com/discourse/discourse/pull/28655.

.discourse-compatibility

@@ -1,3 +1,4 @@
+< 3.4.0.beta2-dev: 1bbdfd8f5681171dc3f0e9ea93cd56997dc7938a
 < 3.4.0.beta1-dev: dc1ef92be23332a54854751a23b9029463584845
 < 3.3.0.beta2-dev: a18ce6d712fafed286bcc99543dd173110c6dfb8
 < 3.3.0.beta1-dev: 526a44644a7b3f0c2a3ba4fc16e72f364e9fce6d

spec/integration/solved_spec.rb

@@ -414,12 +414,13 @@ RSpec.describe "Managing Posts solved status" do
 
   context "with group moderators" do
     fab!(:group_user)
+    let!(:category_moderation_group) do
+      Fabricate(:category_moderation_group, category: p1.topic.category, group: group_user.group)
+    end
     let(:user_gm) { group_user.user }
-    let(:group) { group_user.group }
 
     before do
       SiteSetting.enable_category_group_moderation = true
-      p1.topic.category.update!(reviewable_by_group_id: group.id)
       sign_in(user_gm)
     end
 

spec/lib/guardian_extensions_spec.rb

@@ -46,7 +46,8 @@ describe DiscourseSolved::GuardianExtensions do
     it "returns true if the user is a category group moderator for the topic" do
       group = Fabricate(:group)
       group.add(user)
-      category = Fabricate(:category, reviewable_by_group_id: group.id)
+      category = Fabricate(:category)
+      Fabricate(:category_moderation_group, category:, group:)
       topic.update!(category: category)
       SiteSetting.enable_category_group_moderation = true
       expect(guardian.can_accept_answer?(topic, post)).to eq(true)