Question: session.call with parameter is a struct.

[chungquantin]

How can I pass a struct to a session.call method? For example, I want to pass this below struct:

#[derive(Clone, Copy, Debug, PartialEq, Eq)]
#[cfg_attr(feature = "std", derive(Deserialize, Serialize))]
#[ink::scale_derive(Encode, Decode, TypeInfo)]
pub struct CollectionConfig {
	/// Collection's settings.
	pub settings: CollectionSettings,
	/// Collection's max supply.
	pub max_supply: Option<u32>,
	/// Default settings each item will get during the mint.
	pub mint_settings: MintSettings,
}

Is using serde_json to convert this struct to JSON string is the right way to do?

[pmikolajczyk41]

as far as I remember, you should use SCALE encoding instead of JSON serializing