search: add comment:<text>, note:<text> metatags.

app/logical/post_query_builder.rb

@@ -34,6 +34,8 @@ class PostQueryBuilder
     -ordfav ordfav
     -favgroup favgroup ordfavgroup
     -pool pool ordpool
+    -note note
+    -comment comment
     -commentary commentary
     -id id
     -rating rating
@@ -195,6 +197,14 @@ class PostQueryBuilder
       commentary_matches(value, quoted)
     when "-commentary"
       commentary_matches(value, quoted).negate
+    when "note"
+      note_matches(value)
+    when "-note"
+      note_matches(value).negate
+    when "comment"
+      comment_matches(value)
+    when "-comment"
+      comment_matches(value).negate
     when "search"
       saved_search_matches(value)
     when "-search"
@@ -470,6 +480,14 @@ class PostQueryBuilder
     favorites_include(username).joins(:favorites).merge(Favorite.for_user(user.id)).order("favorites.id DESC")
   end
 
+  def note_matches(query)
+    Post.where(notes: Note.search(body_matches: query).reorder(nil))
+  end
+
+  def comment_matches(query)
+    Post.where(comments: Comment.search(body_matches: query).reorder(nil))
+  end
+
   def commentary_matches(query, quoted = false)
     case query.downcase
     in "none" | "false" unless quoted

test/unit/post_query_builder_test.rb

@@ -450,6 +450,50 @@ class PostQueryBuilderTest < ActiveSupport::TestCase
       assert_tag_match([], "commentary:'untranslated'")
     end
 
+    should "return posts for the comment:<query> metatag" do
+      post1 = create(:post)
+      post2 = create(:post)
+
+      comment1 = create(:comment, post: post1, body: "petting cats")
+      comment2 = create(:comment, post: post2, body: "walking dogs")
+
+      assert_tag_match([post1], "comment:petting")
+      assert_tag_match([post1], "comment:pet")
+      assert_tag_match([post1], "comment:cats")
+      assert_tag_match([post1], "comment:cat")
+      assert_tag_match([post1], "comment:*at*")
+
+      assert_tag_match([post2], "comment:walk")
+      assert_tag_match([post2], "comment:dog")
+
+      assert_tag_match([post2], "-comment:cat")
+      assert_tag_match([post1], "-comment:dog")
+
+      assert_tag_match([post2, post1], "comment:*ing*")
+    end
+
+    should "return posts for the note:<query> metatag" do
+      post1 = create(:post)
+      post2 = create(:post)
+
+      note1 = create(:note, post: post1, body: "petting cats")
+      note2 = create(:note, post: post2, body: "walking dogs")
+
+      assert_tag_match([post1], "note:petting")
+      assert_tag_match([post1], "note:pet")
+      assert_tag_match([post1], "note:cats")
+      assert_tag_match([post1], "note:cat")
+      assert_tag_match([post1], "note:*at*")
+
+      assert_tag_match([post2], "note:walk")
+      assert_tag_match([post2], "note:dog")
+
+      assert_tag_match([post2], "-note:cat")
+      assert_tag_match([post1], "-note:dog")
+
+      assert_tag_match([post2, post1], "note:*ing*")
+    end
+
     should "return posts for the date:<d> metatag" do
       post = create(:post, created_at: Time.parse("2017-01-01 12:00"))