FEATURE #2048: add basics of permissions management

database/migrations/2017_08_10_202656_CreatePermissionsTable.php

@@ -0,0 +1,65 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class CreatePermissionsTable extends Migration
+{
+    /**
+     * Run the migrations.
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('permissions', function (Blueprint $table) {
+            $table->increments('id');
+            $table->integer('parent_id')
+                  ->nullable()
+                  ->unsigned();
+            $table->string('string_id')
+                  ->unique();
+            $table->string('name');
+            $table->string('group')
+                  ->nullable(true);
+        });
+
+        Schema::table('permissions', function (Blueprint $table) {
+            $table->foreign('parent_id')
+                  ->references('id')
+                  ->on('permissions')
+                  ->onDelete('set null')
+                  ->onUpdate('cascade');
+        });
+
+        Schema::create('user_has_permissions', function (Blueprint $table) {
+            $table->integer('user_id');
+            $table->integer('permission_id')
+                  ->unsigned();
+        });
+
+        Schema::table('user_has_permissions', function (Blueprint $table) {
+            $table->foreign('user_id')
+                  ->references('id')
+                  ->on('users')
+                  ->onDelete('cascade')
+                  ->onUpdate('cascade');
+
+            $table->foreign('permission_id')
+                  ->references('id')
+                  ->on('permissions')
+                  ->onDelete('cascade')
+                  ->onUpdate('cascade');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     * @return void
+     */
+    public function down()
+    {
+        Schema::drop('user_has_permissions');
+        Schema::drop('permissions');
+    }
+}