Beginner: Cannot connect to R2 via Worker
Hi everyone, I followed the tutorial https://developers.cloudflare.com/r2/api/workers/workers-api-usage/ and created a worker. While testing it, I am getting an error:
message:
"Cannot read properties of undefined (reading 'put')",
exception:
{
stack:
" at Object.fetch (index.js:971:30)",
name:
"TypeError",
message:
"Cannot read properties of undefined (reading 'put')",
timestamp:
1733778270490,
},
If I remove the R2 related code, it works properly. I have tried both locally and after deployment. From CLI, I created the bucket as shown in the tutorial. I can see both the bucket and worker from the dashboard.Cloudflare Docs
Use R2 from Workers · Cloudflare R2 docs
C3 (create-cloudflare-cli) is a command-line tool designed to help you set up and deploy Workers & Pages applications to Cloudflare as fast as possible.
4 Replies
share your code + wrangler.toml
@Walshy Thank you for responding!
index.js
/**
* Welcome to Cloudflare Workers! This is your first worker.
*
* - Run npm run dev in your terminal to start a development server
* - Open a browser tab at http://localhost:8787/ to see your worker in action
* - Run npm run deploy to publish your worker
*
* Learn more at https://developers.cloudflare.com/workers/
*/
export default {
async fetch(request, env, ctx) {
// return new Response('Hello World!');
const url = new URL(request.url);
const key = url.pathname.slice(1);
switch (request.method) {
case "PUT":
await env.MY_BUCKET.put(key, request.body);
return new Response(Put ${key} successfully!);
default:
return new Response(${request.method} is not allowed., {
status: 405,
headers: {
Allow: "PUT",
},
});
}
},
};
wrangler.toml (only change is the name of the bucket)
# Bind an R2 Bucket. Use R2 to store arbitrarily large blobs of data, such as files.
# Docs: https://developers.cloudflare.com/workers/wrangler/configuration/#r2-buckets
# [[r2_buckets]]
# binding = "MY_BUCKET"
# bucket_name = "faltu-bucket"Your bindings look wrong. You need to remove the #. Your R2 bindings should look like:
Omg that's such a silly mistake. Sorry. And thank you for looking into it!