add select

migrations/PostMigration.php

@@ -18,7 +18,7 @@ class PostMigration extends Migration
     {
         Manager::schema()->create('post', function (Blueprint $table) {
             $table->increments('id');
-            $table->string('content', 3000)->nullable(false);
+            $table->text('content')->nullable(false);
             $table->integer('user_id');
             $table->timestamps();
         });