Initial working extension

extensions/nicknames/migrations/2020_11_23_000000_add_nickname_column.php

@@ -0,0 +1,19 @@
+<?php
+
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Schema\Builder;
+
+return [
+    'up' => function(Builder $schema) {
+        if (!$schema->hasColumn('users', 'nickname')) {
+            $schema->table('users', function (Blueprint $table) use ($schema) {
+                $table->string('nickname', 150)->after('username')->index();
+            });
+        }
+    },
+    'down' => function(Builder $schema) {
+        $schema->table('users', function (Blueprint $table) use ($schema) {
+            $table->dropColumn('nickname');
+        });
+    }
+];