URL input validation rule (#223)

app/Rules/ValidUrl.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace App\Rules;
+
+use Illuminate\Contracts\Validation\Rule;
+
+class ValidUrl implements Rule
+{
+    /**
+     * Determine if the validation rule passes.
+     *
+     * @param  string  $attribute
+     * @param  mixed  $value
+     * @return bool
+     */
+    public function passes($attribute, $value)
+    {
+        // Define the regular expression to match the desired URL patterns
+        $pattern = '/^(https?:\/\/)?(www\.)?[\w.-]+\.\w+(:\d+)?(\/[^\s]*)?$/';
+
+        return preg_match($pattern, $value);
+    }
+
+    /**
+     * Get the validation error message.
+     *
+     * @return string
+     */
+    public function message()
+    {
+        return 'The :attribute format is invalid.';
+    }
+}