Set custom field value inside channel form parameter

Question

Is there a plugin that can do this?

{exp:channel:form custom_field="value" channel="my_channel"}{/exp:channel:form}

The reason I'm doing this is so that nobody can view what are the values I'm sending when creating an entry using channel form.

Answer 1

I'd suggest writing a simple extension using the channel_form_submit_entry_start extension hook, then adding your custom field data to $_POST there.