start

app/Rules/CommaSeparatedIntegers.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace App\Rules;
+
+use Closure;
+use Illuminate\Contracts\Validation\ValidationRule;
+
+class CommaSeparatedIntegers implements ValidationRule
+{
+    /**
+     * Run the validation rule.
+     *
+     * @param  \Closure(string): \Illuminate\Translation\PotentiallyTranslatedString  $fail
+     */
+    public function validate(string $attribute, mixed $value, Closure $fail): void
+    {
+        // Remove any leading/trailing whitespace
+        $input = trim($value);
+
+        // Check if the input matches the format "int,int,int..." or "int"
+        if (! preg_match('/^(\d+,)*\d+$/', $input)) {
+            $fail(__('Integers should be comma seperated'));
+        }
+    }
+}