タグ “廃止” 追加 (#378) (#379)

Reviewed-on: #379
Co-authored-by: miteruzo <miteruzo@naver.com>
Co-committed-by: miteruzo <miteruzo@naver.com>

backend/app/controllers/gekanator_posts_controller.rb

@@ -7,13 +7,24 @@ class GekanatorPostsController < ApplicationController
         .order(Arel.sql(
             'COALESCE(posts.original_created_before - INTERVAL 1 MINUTE, ' \
             'posts.original_created_from, posts.created_at) DESC, posts.id DESC'))
+        .to_a
 
-    render json: { posts: posts.map { |post| post_json(post) } }
+    active_tags_by_post_id =
+        posts.each_with_object({ }) do |post, h|
+          h[post.id] = post.tags.reject(&:deprecated?)
+        end
+
+    render json: {
+      posts: posts.map { |post|
+        post_json(post,
+                  active_tags_by_post_id:)
+      }
+    }
   end
 
   private
 
-  def post_json post
+  def post_json post, active_tags_by_post_id:
     {
       id: post.id,
       url: post.url,
@@ -22,16 +33,26 @@ class GekanatorPostsController < ApplicationController
       thumbnail_base: post.thumbnail_base,
       original_created_from: post.original_created_from,
       original_created_before: post.original_created_before,
-      post_similarity_edges: post.post_similarities.map { |similarity|
-        {
-          target_post_id: similarity.target_post_id,
-          cos: similarity.cos.to_f
-        }
-      },
-      tags: post.tags.map { |tag| tag_json(tag) }
+      post_similarity_edges: post_similarity_edges_json(
+          post,
+          active_tags_by_post_id:),
+      tags: active_tags_by_post_id.fetch(post.id, []).map { |tag| tag_json(tag) }
     }
   end
 
+  def post_similarity_edges_json post, active_tags_by_post_id:
+    post
+        .post_similarities
+        .filter_map do |similarity|
+          next unless active_tags_by_post_id.key?(similarity.target_post_id)
+
+          {
+            target_post_id: similarity.target_post_id,
+            cos: similarity.cos.to_f
+          }
+        end
+  end
+
   def tag_json tag
     {
       id: tag.id,