タグ一覧画面を追加

app/Http/Controllers/TagController.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Tag;
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\DB;
+
+class TagController extends Controller
+{
+    public function index()
+    {
+        $tags = Tag::select(DB::raw(
+            <<<'SQL'
+tags.name,
+count(*) AS "checkins_count"
+SQL
+            ))
+            ->join('ejaculation_tag', 'tags.id', '=', 'ejaculation_tag.tag_id')
+            ->join('ejaculations', 'ejaculations.id', '=', 'ejaculation_tag.ejaculation_id')
+            ->where('ejaculations.is_private', false)
+            ->groupBy('tags.name')
+            ->orderByDesc('checkins_count')
+            ->orderBy('tags.name')
+            ->paginate(100);
+
+        return view('tag.index', compact('tags'));
+    }
+}