From ef1e153e26b4e3f96c98267b6c8b559e9ee8e316 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Silvan=20Kr=C3=A4henb=C3=BChl?= <silvan@kbuhl.ch>
Date: Wed, 3 May 2023 15:05:47 +0200
Subject: [PATCH] Add missing constructor parameters to error message

---
 src/Exceptions/CannotCreateData.php | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/Exceptions/CannotCreateData.php b/src/Exceptions/CannotCreateData.php
index df89007e..eea03f57 100644
--- a/src/Exceptions/CannotCreateData.php
+++ b/src/Exceptions/CannotCreateData.php
@@ -5,6 +5,7 @@
 use Exception;
 use Illuminate\Support\Collection;
 use Spatie\LaravelData\Support\DataClass;
+use Spatie\LaravelData\Support\DataProperty;
 use Throwable;
 
 class CannotCreateData extends Exception
@@ -28,7 +29,12 @@ public static function constructorMissingParameters(
         $message = "Could not create `{$dataClass->name}`: the constructor requires {$dataClass->constructorMethod->parameters->count()} parameters, {$parameters->count()} given.";
 
         if ($parameters->isNotEmpty()) {
-            $message .= " Parameters given: {$parameters->keys()->join(', ')}.";
+            $message .= " Parameters given: {$parameters->keys()->join(', ')}. Parameters missing: {$dataClass
+                ->constructorMethod
+                ->parameters
+                ->reject(fn (DataProperty $parameter) => $parameters->has($parameter->name))
+                ->map(fn (DataProperty $parameter) => $parameter->name)
+                ->join(', ')}";
         }
 
         return new self($message, previous: $previous);