diff --git a/MyObsidianVault/WebDev/2 CodeIgniter/25.) CORS (Cross Origin Resource Sharing).md b/MyObsidianVault/WebDev/2 CodeIgniter/25.) CORS (Cross Origin Resource Sharing).md
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+https://www.youtube.com/watch?v=8GhfHZlEaEo&list=PLT9miexWCpPW6Z_OXNv2d78cqCrZaPrVG&index=41
+
+
+In case Web Server throws CORS errors when trying to access API.
+We add a filter that adds header with CORS info to define which kind of HTTP are allowed from foreign source.
+
+
+Create CorsFilter.php
+```bash
+php spark make:filter Cors --suffix
+```
+
+Add to before method:
+```php
+public function before(RequestInterface $request, $arguments=null)
+{
+	header("Access-Control-Allow-Origin: *");
+	header("Access-Control-Allow-Headers: Authorization, Content-Type, Accept, API-KEY");
+	header("Access-Control-Allow-Methods: GET, POST, PUT, DELETE, PATCH");
+}
+```
+
+Add in app/Config/Filters.php:
+![[Pasted image 20241202084231.png]]
+![[Pasted image 20241202084303.png]]
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