オカズリンクの上限を2000文字に拡張 (#16)

* マイグレーションのために依存関係を追加
* Ejaculations.linkのデータ型をTEXTに変更
* オカズリンクに2000文字の上限値を設定

database/migrations/2019_01_13_224305_change_link_on_ejaculations.php

@@ -0,0 +1,32 @@
+<?php
+
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+class ChangeLinkOnEjaculations extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('ejaculations', function (Blueprint $table) {
+            $table->text('link')->default('')->change();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::table('ejaculations', function (Blueprint $table) {
+            $table->string('link')->default('')->change();
+        });
+    }
+}