Remove unused MorphToMany relationships from models and add CategoriesTableSeeder for category data population

database/seeders/new/PropertiesTableSeeder.php

@@ -0,0 +1,35 @@
+<?php
+
+namespace Database\Seeders\New;
+
+use Illuminate\Database\Seeder;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\File;
+use Illuminate\Support\Str;
+
+class PropertiesTableSeeder extends Seeder
+{
+    public function run()
+    {
+        $datas = json_decode(File::get('database/data/properties.json'));
+        $table = 'attributes';
+
+        DB::table($table)->truncate();
+
+        foreach ($datas as $data) {
+            DB::table($table)->insertOrIgnore([
+                'id' => $data->id,
+                'slug' => $data->code,
+                'name' => str_replace('"tm"', '"tk"', $data->name),
+                'description' => $data->description,
+                'type' => 'text',
+                'created_at' => $data->created_at,
+                'updated_at' => $data->updated_at,
+            ]);
+        }
+
+        DB::statement("
+            SELECT setval('{$table}_id_seq', (SELECT MAX(id) from {$table}))
+        ");
+    }
+}