投稿検索ページ（#206） (#274)

#206 エラー修正

#206 updated_at の並び順修正

Merge remote-tracking branch 'origin/main' into feature/206

Merge branch 'main' into feature/206

Merge branch 'main' into feature/206

Merge branch 'main' into feature/206

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#206 タグ補完追加

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#206

Merge remote-tracking branch 'origin/main' into feature/206

#206

Co-authored-by: miteruzo <miteruzo@naver.com>
Reviewed-on: #274

backend/app/controllers/posts_controller.rb

@@ -2,41 +2,88 @@ class PostsController < ApplicationController
   Event = Struct.new(:post, :tag, :user, :change_type, :timestamp, keyword_init: true)
 
   def index
+    url = params[:url].presence
+    title = params[:title].presence
+    original_created_from = params[:original_created_from].presence
+    original_created_to = params[:original_created_to].presence
+    created_between = params[:created_from].presence, params[:created_to].presence
+    updated_between = params[:updated_from].presence, params[:updated_to].presence
+
+    order = params[:order].to_s.split(':', 2).map(&:strip)
+    unless order[0].in?(['title', 'url', 'original_created_at', 'created_at', 'updated_at'])
+      order[0] = 'original_created_at'
+    end
+    unless order[1].in?(['asc', 'desc'])
+      order[1] =
+          if order[0].in?(['title', 'url'])
+            'asc'
+          else
+            'desc'
+          end
+    end
+
     page = (params[:page].presence || 1).to_i
     limit = (params[:limit].presence || 20).to_i
-    cursor = params[:cursor].presence
 
     page = 1 if page < 1
     limit = 1 if limit < 1
 
     offset = (page - 1) * limit
 
-    sort_sql =
-        'COALESCE(posts.original_created_before - INTERVAL 1 SECOND,' +
-        'posts.original_created_from,' +
-        'posts.created_at)'
+    pt_max_sql =
+        PostTag
+        .select('post_id, MAX(updated_at) AS max_updated_at')
+        .group('post_id')
+        .to_sql
+
+    updated_at_all_sql =
+        'GREATEST(posts.updated_at,' +
+        'COALESCE(pt_max.max_updated_at, posts.updated_at))'
+
     q =
         filtered_posts
+        .joins("LEFT JOIN (#{ pt_max_sql }) pt_max ON pt_max.post_id = posts.id")
+        .reselect('posts.*', Arel.sql("#{ updated_at_all_sql } AS updated_at_all"))
         .preload(tags: { tag_name: :wiki_page })
         .with_attached_thumbnail
-        .select("posts.*, #{ sort_sql } AS sort_ts")
-        .order(Arel.sql("#{ sort_sql } DESC"))
-    posts =
-        if cursor
-          q.where("#{ sort_sql } < ?", Time.iso8601(cursor)).limit(limit + 1)
-        else
-          q.limit(limit).offset(offset)
-        end
-        .to_a
 
-    next_cursor = nil
-    if cursor && posts.length > limit
-      next_cursor = posts.last.read_attribute('sort_ts').iso8601(6)
-      posts = posts.first(limit)
+    q = q.where('posts.url LIKE ?', "%#{ url }%") if url
+    q = q.where('posts.title LIKE ?', "%#{ title }%") if title
+    if original_created_from
+      q = q.where('posts.original_created_before > ?', original_created_from)
+    end
+    if original_created_to
+      q = q.where('posts.original_created_from <= ?', original_created_to)
+    end
+    q = q.where('posts.created_at >= ?', created_between[0]) if created_between[0]
+    q = q.where('posts.created_at <= ?', created_between[1]) if created_between[1]
+    if updated_between[0]
+      q = q.where("#{ updated_at_all_sql } >= ?", updated_between[0])
+    end
+    if updated_between[1]
+      q = q.where("#{ updated_at_all_sql } <= ?", updated_between[1])
     end
 
+    sort_sql =
+        case order[0]
+        when 'original_created_at'
+          'COALESCE(posts.original_created_before - INTERVAL 1 MINUTE,' +
+          'posts.original_created_from,' +
+          'posts.created_at) '
+        when 'updated_at'
+          updated_at_all_sql
+        else
+          "posts.#{ order[0] }"
+        end
+    posts = q.order(Arel.sql("#{ sort_sql } #{ order[1] }, id #{ order[1] }"))
+             .limit(limit)
+             .offset(offset)
+             .to_a
+
+    q = q.except(:select, :order)
+
     render json: { posts: posts.map { |post|
-      PostRepr.base(post).tap do |json|
+      PostRepr.base(post).merge(updated_at: post.updated_at_all).tap do |json|
         json['thumbnail'] =
             if post.thumbnail.attached?
               rails_storage_proxy_url(post.thumbnail, only_path: false)
@@ -44,11 +91,7 @@ class PostsController < ApplicationController
               nil
             end
       end
-    }, count: if filtered_posts.group_values.present?
-      filtered_posts.count.size
-    else
-      filtered_posts.count
-    end, next_cursor: }
+    }, count: q.group_values.present? ? q.count.size : q.count }
   end
 
   def random
@@ -63,7 +106,7 @@ class PostsController < ApplicationController
   end
 
   def show
-    post = Post.includes(tags: { tag_name: :wiki_page }).find(params[:id])
+    post = Post.includes(tags: { tag_name: :wiki_page }).find_by(id: params[:id])
     return head :not_found unless post
 
     viewed = current_user&.viewed?(post) || false
@@ -84,7 +127,7 @@ class PostsController < ApplicationController
     title = params[:title].presence
     url = params[:url]
     thumbnail = params[:thumbnail]
-    tag_names = params[:tags].to_s.split(' ')
+    tag_names = params[:tags].to_s.split
     original_created_from = params[:original_created_from]
     original_created_before = params[:original_created_before]
 
@@ -125,7 +168,7 @@ class PostsController < ApplicationController
     return head :forbidden unless current_user.gte_member?
 
     title = params[:title].presence
-    tag_names = params[:tags].to_s.split(' ')
+    tag_names = params[:tags].to_s.split
     original_created_from = params[:original_created_from]
     original_created_before = params[:original_created_before]
 
@@ -192,7 +235,7 @@ class PostsController < ApplicationController
   private
 
   def filtered_posts
-    tag_names = params[:tags].to_s.split(' ')
+    tag_names = params[:tags].to_s.split
     match_type = params[:match]
     if tag_names.present?
       filter_posts_by_tags(tag_names, match_type)