JSON column updates don't work

Bug report

Describe the bug

It doesn’t appear possible to update JSON columns.

To Reproduce

const { data, error } = await this.supabase
        .from('my_table')
        .update({ json_col: { test: 10 } })
        .eq('uid', this.user.id)
      if (error) {
        console.error(error)
      } else if (data) {
        console.info(data)
      }

Expected behavior

The JSON column will be updated with the new value.

This line is returned as an error:

PATCH https://<url>/rest/v1/<table>?uid=<uid> 404

And an empty error message is returned on the next line.

I’ve not been able to find the source of the issue but it seems that something is getting lost in translation in the process of wrapping the queries and parameters in nested layers of JSON?

I’ve tried a variety of approaches but none seem to work. e.g.

// something similar to the docs page
.update(`{ json_col: { test: 10 } }`)
// else
.update({ json_col: JSON.stringify({ test: 10 }) })
// etc...

I suppose a workaround would be to just use a TEXT column and stringify the data, but thought I’d check in case there is a workable approach to use JSON columns?

System information

• OS: macOS
• Version of supabase-js: 1.29.1
• Version of Node.js: 17.3.0

[songololo]

This is how I’ve formatted the UPDATE RLS:

CREATE POLICY
    "Restricts table UPDATEs to UID."
    ON public.my_table FOR UPDATE
    USING (auth.uid() = uid);

Thanks for the hint on returning minimal.

EDIT: To confirm the issue is resolved when using { returning: 'minimal' } without needing to add SELECT RLS

[GaryAustin1]

I see that update also has the option: returning minimal If you set that then it won’t do a separate select. I missed that update had that option also.