code challenge 7 solution

Author: jschaedl

CODING-CHALLENGE-8.md

@@ -0,0 +1,14 @@
+# RESTful Webservices in Symfony
+
+## Coding Challenge 8 - Error Handling
+
+### Tasks
+
+- centralize the error handling
+
+### Solution
+
+- throw a `ValidationFailedException` on validation errors
+- introduce an `ExceptionListener` to catch the `ValidationFailedException`
+- in the `ExceptionListener` create an error representation of the caught exception
+  and fill the response content with it

composer.json

@@ -1,7 +1,7 @@
 {
     "type": "project",
     "license": "proprietary",
-    "minimum-stability": "dev",
+    "minimum-stability": "stable",
     "prefer-stable": true,
     "require": {
         "php": ">=8",
@@ -26,6 +26,8 @@
         "symfony/proxy-manager-bridge": "5.4.*",
         "symfony/runtime": "5.4.*",
         "symfony/serializer": "5.4.*",
+        "symfony/string": "5.4.*",
+        "symfony/validator": "5.4.*",
         "symfony/yaml": "5.4.*",
         "webmozart/assert": "^1.10",
         "willdurand/negotiation": "^3.0"