Cost units can be edited

database/migrations/2026_01_30_140010_create_cost_units.php

@@ -15,28 +15,32 @@ return new class extends Migration {
             $table->timestamps();
         });
 
-
-
         Schema::create('cost_units', function (Blueprint $table) {
             $table->id();
             $table->string('tenant');
             $table->string('name');
             $table->string('type');
-            $table->dateTime('billing_deadline');
+            $table->dateTime('billing_deadline')->nullable();
             $table->float('distance_allowance');
             $table->boolean('mail_on_new')->default(true);
             $table->boolean('allow_new')->default(true);
             $table->boolean('archived')->default(false);
-            $table->string('treasurers');
-
             $table->foreign('tenant')->references('slug')->on('tenants')->cascadeOnDelete()->cascadeOnUpdate();
             $table->foreign('type')->references('slug')->on('cost_unit_types')->cascadeOnDelete()->cascadeOnUpdate();
             $table->timestamps();
         });
+
+        Schema::create('cost_unit_treasurers', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('cost_unit_id')->constrained('cost_units', 'id')->cascadeOnDelete()->cascadeOnUpdate();
+            $table->foreignId('user_id')->constrained('users', 'id')->cascadeOnDelete()->cascadeOnUpdate();
+            $table->timestamps();
+        });
     }
 
     public function down(): void
     {
+        Schema::dropIfExists('cost_unit_treasurers');
         Schema::dropIfExists('cost_units');
         Schema::dropIfExists('cost_unit_types');
     }