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CORS preflight returns 500 on Dart function (context.res.text() / .empty() not found)
Hey everyone 👋
I’m running a Dart cloud function, Every time I respond to a preflight (OPTIONS) request, I get a 500 internal error, and the logs show:
NoSuchMethodError: Class 'RuntimeResponse' has no instance method 'text' or 'empty'
I've treid these
TypeScript
return context.res.empty(status: 204, headers: headers);
return context.res.json({}, 204, headers);````
None of them seem to exist on the runtime’s context.res.
❓ So I’m wondering:
• Which context.res methods are actually available in the Dart 3.x Appwrite runtime?
• Is there an updated way to send a plain response with custom headers (e.g. for CORS preflight)?
TL;DR
Issue: Developers facing 500 error in Dart cloud function while responding to preflight request, context.res.text() / .empty() not found.
Solution: In Dart 3.x Appwrite runtime, available methods for context.res are limited. Update method to send a plain response with custom headers:
`context.res.setHeader('Content-Type', 'text/plain');
context.res.setStatusCode(204);
context.res.send('');`