W
Wasp•4w ago
ComputO

Set cookies in response headers

I want to set a third party cookie in response headers for a action or query. How can I achieve this
2 Replies
kapa.ai
kapa.ai•4w ago
Hi @ComputO. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- To set a third-party cookie in response headers for an action or query in Wasp, you can modify the response headers directly in your API implementation. Here's how you can achieve this: 1. First, define your custom API endpoint in the main.wasp file: 
api myCustomApi {
  fn: import { myCustomApiHandler } from "@src/apis.js",
  httpRoute: (GET, "/api/custom")
}
api myCustomApi {
  fn: import { myCustomApiHandler } from "@src/apis.js",
  httpRoute: (GET, "/api/custom")
}
2. Then, implement your API handler in the src/apis.js (or src/apis.ts for TypeScript) file: 
export const myCustomApiHandler = (req, res, context) => {
  // Set your third-party cookie
  res.set('Set-Cookie', 'my-third-party-cookie=value; Domain=.example.com; SameSite=None; Secure');
  
  // Send your response
  res.json({ message: "Cookie set successfully" });
};
export const myCustomApiHandler = (req, res, context) => {
  // Set your third-party cookie
  res.set('Set-Cookie', 'my-third-party-cookie=value; Domain=.example.com; SameSite=None; Secure');
  
  // Send your response
  res.json({ message: "Cookie set successfully" });
};
In this example, we're using the res.set() method to set the Set-Cookie header. You can adjust the cookie attributes as needed for your specific use case. Note that setting third-party cookies requires special consideration: 1. The SameSite attribute should be set to None for third-party cookies. 2. When SameSite=None, the Secure flag must also be set, which means the cookie will only be sent over HTTPS. 3. The Domain attribute should be set to your third-party domain. For actions and queries, you can use a similar approach by modifying the response in your action or query implementation. Remember that modern browsers have restrictions on third-party cookies, especially in cross-site contexts, so make sure to test thoroughly in your target environments. For more information on customizing API responses and middleware in Wasp, you can refer to the Wasp documentation on Configuring Middleware and Custom HTTP API Endpoints. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @ComputO, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist: Perhaps try again in 15mins?
Filip
Filip•4w ago
Hey @ComputO, unfortunately Wasp doesn't support custom middleware for operations, only for custom APIs. We have an issue here and I've added this thread to bump it: https://github.com/wasp-lang/wasp/issues/2396 You may be able set a global middleware that covers all routes, and then do some logic based on the route. You can do this with api namespace middleware. Let me know if I can help you with this
GitHub
Allow specifying middleware for individual and groups of Operations...
If you want to execute some logic that is common for a group of Operations (and maybe also APIs), there is no simple way to do it -> we do have customMiddleware for APIs and api namespaces, but ...

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