店舗評価機能を作成

Author: ren807

app/Http/Controllers/PostController.php

@@ -16,7 +16,7 @@ public function __construct(PostService $post_service)
 
  public function index()
  {
- $data = $this->post->get_posts_data();
+ $data = $this->post->getAverageRating();
  dd($data);
  }
 }

app/Services/PostService.php

@@ -5,11 +5,33 @@
 
 class PostService
 {
- public function get_posts_data(): array
+ /**
+ * 店舗ごとの平均評価値を取得する
+ * @return array<int, object>
+ */
+ public function getAverageRating(): array
  {
- $sql = 'SELECT *'.PHP_EOL;
+ $sql = 'SELECT shopname, AVG(rating) AS 平均値'.PHP_EOL;
  $sql .= 'FROM posts'.PHP_EOL;
+ $sql .= ' INNER JOIN ratings'.PHP_EOL;
+ $sql .= ' ON posts.id = ratings.post_id'.PHP_EOL;
+ $sql .= 'GROUP BY posts.id, posts.shopname'.PHP_EOL;
+ $sql .= 'ORDER BY 平均値 DESC'.PHP_EOL;
 
- return DB::select($sql);
+ return $this->formatAverageRatings(DB::select($sql));
+ }
+
+ /**
+ * 平均評価の値を小数第1位に丸める
+ * @param array<int, object>
+ * @return array<int, object>
+ */
+ private function formatAverageRatings(array $results): array
+ {
+ foreach ($results as $result) {
+ $result->平均値 = round($result->平均値, 1);
+ }
+ 
+ return $results;
  }
 }

database/seeds/DatabaseSeeder.php

@@ -3,6 +3,7 @@
 use Illuminate\Database\Seeder;
 use Database\Seeders\PostSeeder;
 use Database\Seeders\TagSeeder;
+use Database\Seeders\UserSeeder;
 
 class DatabaseSeeder extends Seeder
 {
@@ -15,5 +16,6 @@ public function run()
  {
  $this->call(PostSeeder::class);
  $this->call(TagSeeder::class);
+ $this->call(UserSeeder::class);
  }
 }

database/seeds/RatingSeeder.php

@@ -0,0 +1,96 @@
+<?php
+
+namespace Database\Seeders;
+
+use Illuminate\Database\Console\Seeds\WithoutModelEvents;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Database\Seeder;
+
+class RatingSeeder extends Seeder
+{
+ /**
+ * Run the database seeds.
+ */
+ public function run(): void
+ {
+ DB::table('ratings')->insert([
+ [
+ 'user_id' => 1,
+ 'post_id' => 2,
+ 'rating' => 3.0,
+ 'created_at' => now(),
+ 'updated_at' => now(),
+ ],
+ [
+ 'user_id' => 1,
+ 'post_id' => 3,
+ 'rating' => 4.0,
+ 'created_at' => now(),
+ 'updated_at' => now(),
+ ],
+ [
+ 'user_id' => 1,
+ 'post_id' => 4,
+ 'rating' => 5.0,
+ 'created_at' => now(),
+ 'updated_at' => now(),
+ ],
+ [
+ 'user_id' => 1,
+ 'post_id' => 5,
+ 'rating' => 1.0,
+ 'created_at' => now(),
+ 'updated_at' => now(),
+ ],
+ [
+ 'user_id' => 1,
+ 'post_id' => 6,
+ 'rating' => 1.0,
+ 'created_at' => now(),
+ 'updated_at' => now(),
+ ],
+ [
+ 'user_id' => 2,
+ 'post_id' => 7,
+ 'rating' => 1.5,
+ 'created_at' => now(),
+ 'updated_at' => now(),
+ ],
+ [
+ 'user_id' => 2,
+ 'post_id' => 6,
+ 'rating' => 3.6,
+ 'created_at' => now(),
+ 'updated_at' => now(),
+ ],
+ [
+ 'user_id' => 2,
+ 'post_id' => 5,
+ 'rating' => 2.5,
+ 'created_at' => now(),
+ 'updated_at' => now(),
+ ],
+ [
+ 'user_id' => 3,
+ 'post_id' => 4,
+ 'rating' => 5.0,
+ 'created_at' => now(),
+ 'updated_at' => now(),
+ ],
+ [
+ 'user_id' => 3,
+ 'post_id' => 3,
+ 'rating' => 2.1,
+ 'created_at' => now(),
+ 'updated_at' => now(),
+ ],
+ [
+ 'user_id' => 3,
+ 'post_id' => 2,
+ 'rating' => 3.4,
+ 'created_at' => now(),
+ 'updated_at' => now(),
+ ],
+ ]);
+ }
+}

database/seeds/UserSeeder.php

@@ -0,0 +1,41 @@
+<?php
+
+namespace Database\Seeders;
+
+use Illuminate\Database\Console\Seeds\WithoutModelEvents;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Database\Seeder;
+use Illuminate\Support\Facades\Hash;
+
+class UserSeeder extends Seeder
+{
+ /**
+ * Run the database seeds.
+ */
+ public function run(): void
+ {
+ DB::table('users')->insert([
+ [
+ 'name' => '最初のユーザ',
+ 'email' => 'aaa@aaa.com',
+ 'password' => Hash::make('password123'),
+ 'created_at' => now(),
+ 'updated_at' => now(),
+ ],
+ [
+ 'name' => '二番目のユーザ',
+ 'email' => 'bbb@bbb.com',
+ 'password' => Hash::make('password456'),
+ 'created_at' => now(),
+ 'updated_at' => now(),
+ ],
+ [
+ 'name' => '三番目のユーザ',
+ 'email' => 'ccc@ccc.com',
+ 'password' => Hash::make('password789'),
+ 'created_at' => now(),
+ 'updated_at' => now(),
+ ],
+ ]);
+ }
+}