Posts: prune disapprovals on new appeal or flag

app/models/post_appeal.rb

@@ -8,6 +8,7 @@ class PostAppeal < ApplicationRecord
   validate :validate_post_is_appealable, on: :create
   validate :validate_creator_is_not_limited, on: :create
   validates :creator, uniqueness: { scope: :post, message: "have already appealed this post" }, on: :create
+  after_create :prune_disapprovals
 
   enum status: {
     pending: 0,
@@ -17,6 +18,10 @@ class PostAppeal < ApplicationRecord
 
   scope :expired, -> { pending.where("post_appeals.created_at < ?", Danbooru.config.moderation_period.ago) }
 
+  def prune_disapprovals
+    PostDisapproval.where(post: post).delete_all
+  end
+
   module SearchMethods
     def search(params)
       q = search_attributes(params, :id, :created_at, :updated_at, :reason, :status, :creator, :post)

app/models/post_flag.rb

@@ -15,6 +15,7 @@ class PostFlag < ApplicationRecord
   validate :validate_post, on: :create
   validates :creator_id, uniqueness: { scope: :post_id, on: :create, unless: :is_deletion, message: "have already flagged this post" }
   before_save :update_post
+  after_create :prune_disapprovals
   attr_accessor :is_deletion
 
   enum status: {
@@ -90,6 +91,11 @@ class PostFlag < ApplicationRecord
     end
   end
 
+  def prune_disapprovals
+    return if is_deletion
+    PostDisapproval.where(post: post).delete_all
+  end
+
   def update_post
     post.update_column(:is_flagged, true) unless post.is_flagged?
   end

test/unit/post_disapproval_test.rb

@@ -1,4 +1,4 @@
-require 'test_helper'
+require "test_helper"
 
 class PostDisapprovalTest < ActiveSupport::TestCase
   context "In all cases" do
@@ -13,7 +13,7 @@ class PostDisapprovalTest < ActiveSupport::TestCase
       CurrentUser.ip_addr = nil
     end
 
-    context "A post disapproval" do
+    context "a post disapproval" do
       setup do
         @post_1 = FactoryBot.create(:post, :is_pending => true)
         @post_2 = FactoryBot.create(:post, :is_pending => true)
@@ -35,7 +35,7 @@ class PostDisapprovalTest < ActiveSupport::TestCase
           end
 
           should "remove the associated post from alice's moderation queue" do
-            assert(!Post.available_for_moderation(CurrentUser.user, hidden: false).map(&:id).include?(@post_1.id))
+            assert_not(Post.available_for_moderation(CurrentUser.user, hidden: false).map(&:id).include?(@post_1.id))
             assert(Post.available_for_moderation(CurrentUser.user, hidden: false).map(&:id).include?(@post_2.id))
           end
         end
@@ -53,15 +53,21 @@ class PostDisapprovalTest < ActiveSupport::TestCase
         end
       end
 
-      context "for a post that has been approved" do
+      context "when pruning" do
-        setup do
+        should "prune old disapprovals" do
-          @post = FactoryBot.create(:post, is_pending: true)
           @user = FactoryBot.create(:user)
-          @disapproval = create(:post_disapproval, user: @user, post: @post, created_at: 2.months.ago)
+          @post = FactoryBot.create(:post, is_pending: true)
+          create(:post_disapproval, user: @user, post: @post, created_at: 2.months.ago)
+          assert_difference("PostDisapproval.count", -1) do
+            PostDisapproval.prune!
+          end
         end
 
-        should "be pruned" do
+        should "not prune recent disapprovals" do
-          assert_difference("PostDisapproval.count", -1) do
+          @user = FactoryBot.create(:user)
+          @post = FactoryBot.create(:post, is_pending: true)
+          @disapproval = create(:post_disapproval, user: @user, post: @post, created_at: 7.days.ago)
+          assert_no_difference("PostDisapproval.count") do
             PostDisapproval.prune!
           end
         end
@@ -69,14 +75,56 @@ class PostDisapprovalTest < ActiveSupport::TestCase
 
       context "#search" do
         should "work" do
-          disapproval1 = FactoryBot.create(:post_disapproval, user: @alice, post: @post_1, reason: "breaks_rules")
+          @approver = create(:approver)
-          disapproval2 = FactoryBot.create(:post_disapproval, user: @alice, post: @post_2, reason: "poor_quality", message: "bad anatomy")
+          @post1 = create(:post, is_pending: true)
+          @post2 = create(:post, is_pending: true)
+          disapproval1 = FactoryBot.create(:post_disapproval, user: @approver, post: @post1, reason: "breaks_rules")
+          disapproval2 = FactoryBot.create(:post_disapproval, user: @approver, post: @post2, reason: "poor_quality", message: "bad anatomy")
 
           assert_equal([disapproval1.id], PostDisapproval.search(reason: "breaks_rules").pluck(:id))
           assert_equal([disapproval2.id], PostDisapproval.search(message: "bad anatomy").pluck(:id))
-          assert_equal([disapproval2.id, disapproval1.id], PostDisapproval.search(creator_name: "alice").pluck(:id))
+          assert_equal([disapproval1.id, disapproval2.id], PostDisapproval.where(user: @approver).pluck(:id))
         end
       end
     end
+
+    context "post deletions" do
+      should "not prune disapprovals" do
+        @post = create(:post, is_pending: true)
+        @user = create(:moderator_user)
+        create(:post_disapproval, user: @user, post: @post, message: "test")
+        assert_equal(1, PostDisapproval.where(post: @post).size)
+        @post.delete!("blah", user: @user)
+        assert_equal(1, PostDisapproval.where(post: @post).size)
+      end
+    end
+
+    context "post appeals" do
+      should "prune disapprovals" do
+        @post = create(:post, is_pending: true)
+        @user = create(:moderator_user)
+        create(:post_disapproval, user: @user, post: @post, message: "test")
+        assert_equal(1, PostDisapproval.where(post: @post).size)
+        @post.delete!("blah", user: @user)
+
+        create(:post_appeal, post: @post, creator: @user)
+
+        assert_equal(0, PostDisapproval.where(post: @post).size)
+      end
+    end
+
+    context "post flags" do
+      should "prune disapprovals" do
+        @post = create(:post, is_pending: true)
+        @user = create(:moderator_user)
+        create(:post_disapproval, user: @user, post: @post, message: "test")
+        assert_equal(1, PostDisapproval.where(post: @post).size)
+
+        create(:post_approval, post: @post, user: @user)
+        create(:post_flag, post: @post, creator: @user)
+
+        assert_equal(0, PostDisapproval.where(post: @post).size)
+      end
+    end
   end
 end