Questions on returning vecs and including luarocks modules in mlua 0.10

[cheesycod]

Just a quick question, how would I deserialize a Lua array in mlua since serde complains about invalid type: map, expected a sequence. Also, is it possible to include modules from luarocks or similar in mlua (luau) somehow?

[khvzak]

Just a quick question, how would I deserialize a Lua array in mlua since serde complains about invalid type: map, expected a sequence.

Do you have a code example?

Also, is it possible to include modules from luarocks or similar in mlua (luau) somehow?

You can build modules for luau in mlua and use them. I don't think luarocks support luau, as it's a completely independent ecosystem

[cheesycod]

Do you have a code example?

#[derive(Serialize, Deserialize, Debug, Default, Clone)]
pub struct MessageEmbed {
    /// The title set by the template
    pub title: Option<String>,
    /// The description set by the template
    pub description: Option<String>,
    /// The fields that were set by the template
    pub fields: Vec<MessageEmbedField>,
}

In Lua:

local embed = { title = "", description = "", fields = {} }

Leads to the above error. Or do I have to set the array metaclass on fields for this to work?

Also, is it possible to include modules from luarocks or similar in mlua (luau) somehow?

You can build modules for luau in mlua and use them. I don't think luarocks support luau, as it's a completely independent ecosystem

Ah alr

[khvzak]

do I have to set the array metaclass on fields for this to work?

Yes. fields = setmetatable({}, array_mt) where array_mt is https://docs.rs/mlua/0.10.0-beta.1/mlua/struct.Lua.html#method.array_metatable

[khvzak]

See https://github.com/openresty/lua-cjson?tab=readme-ov-file#array_mt where the idea came from