Attachment file update

database/migrations/2017_12_30_000000_create_mediable_tables.php

@@ -0,0 +1,59 @@
+<?php
+
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+class CreateMediableTables extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('media', function (Blueprint $table) {
+            $table->increments('id');
+            $table->string('disk', 32);
+            $table->string('directory');
+            $table->string('filename');
+            $table->string('extension', 32);
+            $table->string('mime_type', 128);
+            $table->string('aggregate_type', 32);
+            $table->integer('size')->unsigned();
+            $table->timestamps();
+            $table->softDeletes();
+
+            $table->index(['disk', 'directory']);
+            $table->unique(['disk', 'directory', 'filename', 'extension']);
+            $table->index('aggregate_type');
+        });
+
+        Schema::create('mediables', function (Blueprint $table) {
+            $table->integer('media_id')->unsigned();
+            $table->string('mediable_type');
+            $table->integer('mediable_id')->unsigned();
+            $table->string('tag');
+            $table->integer('order')->unsigned();
+
+            $table->primary(['media_id', 'mediable_type', 'mediable_id', 'tag']);
+            $table->index(['mediable_id', 'mediable_type']);
+            $table->index('tag');
+            $table->index('order');
+            $table->foreign('media_id')->references('id')->on('media')
+                ->onDelete('cascade');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::drop('mediables');
+        Schema::drop('media');
+    }
+}