updated migrations

README.md

@@ -6,7 +6,7 @@ Laravel Role Based Access Control for Laravel 5+.
 Require via composer:
 
 ```
-composer require farhoudi/laravel-rbac
+composer require farhoudi/laravel-rbac:^1
 ```
 
 Register service provider to the `providers` array in `config/app.php`

src/migrations/2020_11_06_165959_create_rbac_tables.php

@@ -32,8 +32,10 @@ public function up() {
             $table->string('name');
             $table->string('alias')->unique()->nullable();
             $table->text('description')->nullable();
-            $table->bigInteger('group_id')->unsigned();
+            $table->bigInteger('group_id')->unsigned()->nullable();
             $table->timestamps();
+
+            $table->foreign('group_id')->references('id')->on('rbac_permission_groups');
         });
 
         Schema::create('rbac_permission_role', function (Blueprint $table) {
@@ -42,6 +44,8 @@ public function up() {
 
             $table->foreign('permission_id')->references('id')->on('rbac_permissions');
             $table->foreign('role_id')->references('id')->on('rbac_roles');
+
+            $table->primary(['permission_id', 'role_id']);
         });
 
         Schema::create('rbac_role_user', function (Blueprint $table) {
@@ -54,6 +58,8 @@ public function up() {
             } catch (Exception $ex) {
                 $table->index('user_id');
             }
+
+            $table->primary(['role_id', 'user_id']);
         });
     }