feat: WikiPagesController#index と WikiPagesController#search を統合（#222） (#240)

#222

Co-authored-by: miteruzo <miteruzo@naver.com>
Reviewed-on: https://git.miteruzo.com/miteruzo/btrc-hub/pulls/240

backend/app/controllers/wiki_pages_controller.rb

@@ -2,8 +2,12 @@ class WikiPagesController < ApplicationController
   rescue_from Wiki::Commit::Conflict, with: :render_wiki_conflict
 
   def index
-    pages = WikiPage.all
-    render json: pages.as_json(methods: [:title])
+    title = params[:title].to_s.strip
+    return render json: WikiPage.all.as_json(methods: [:title]) if title.blank?
+
+    q = WikiPage.joins(:tag_name).includes(:tag_name)
+        .where('tag_names.name LIKE ?', "%#{ WikiPage.sanitize_sql_like(title) }%")
+    render json: q.limit(20).as_json(methods: [:title])
   end
 
   def show
@@ -122,14 +126,7 @@ class WikiPagesController < ApplicationController
   end
 
   def search
-    title = params[:title].to_s.strip
-
-    q = WikiPage.joins(:tag_name).includes(:tag_name)
-    if title.present?
-      q = q.where('tag_names.name LIKE ?', "%#{ WikiPage.sanitize_sql_like(title) }%")
-    end
-
-    render json: q.limit(20).as_json(methods: [:title])
+    index
   end
 
   def changes