On Cloudflare Pages KV, how do you seed values for KV keys

Question

I have a Cloudflare Pages project with functions which used KV. I wish to test my functions with KV values that are seeded before the function is called. How do I do this?

Answer 1

The solution: On the root directory of your project … i.e. where the functions directory is, create a file in a directory:

.wrangler/state/kv/<bind-name>/<key>

<bind-name> is your KV namespace.
<key> is a file with the name of your key.

for me bind-name is TEST, key is BUG_TEST. So my file is:

.wrangler/state/kv/TEST/BUG_TEST

Inside the file place the value for the key.

Then when you start your wrangler use --persist. For me, using pages, the command is:

npx wrangler pages dev --kv=TEST --persist -- npm start

Also, if you are using git don’t forget to add .wrangler to .gitignore