how can I get encoded but not signed call?

[dzmitry-lahoda]

I want to send XCM with Transact. For that I need scale encoded call like that:

// 2. SCALE encode call data to bytes (pallet u8, call u8, call params).
        let call_data = {
            let mut bytes = Vec::new();
            let pallet = self.client.metadata().pallet(C::PALLET)?;
            bytes.push(pallet.index());
            bytes.push(pallet.call_index::<C>()?);
            self.call.encode_to(&mut bytes);
            Encoded(bytes)
        };

But there is no API to get it, nor call and client are public to allow to write my own trait

[dzmitry-lahoda]

this for specific call

		let mut bytes = Vec::new();
		let pallet = relay.client.metadata().pallet(HrmpAcceptOpenChannel::PALLET).unwrap();
		bytes.push(pallet.index());
		bytes.push(pallet.call_index::<HrmpAcceptOpenChannel>().unwrap());
		let call = HrmpAcceptOpenChannel { sender : primitives::Id(command.para_id)};
		call.encode_to(&mut bytes);

so it could be useful part of API for XCM (may be for other dispatchable usage as in Democracy)

[niklasad1]

right, should be easy to expose encode on the struct SubmittableExtrinsic

to enable that