custom Serialize for custom rename snum

main.rs

use serde::{Serialize, Serializer};

#[derive(Clone, Debug, Copy)]
pub enum ComparisonOperators {
    EQ(i64),
    NEQ(Provider),
}

#[derive(Serialize, Clone, Debug, Copy)]
pub enum Provider {
    #[serde(rename = "discord")]
    ProviderDiscord,
    #[serde(rename = "google")]
    ProviderGoogle,
}


impl Serialize for ComparisonOperators {
    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
    where
        S: Serializer,
    {
        match self {
            ComparisonOperators::EQ(value) => { serializer.serialize_str(&format!("eq_{}", value)) }
            ComparisonOperators::NEQ(value) => {
                let inner = serde_json::to_string(value).unwrap();
                serializer.serialize_str(&format!("neq_{}", inner.trim_matches('"')))
            }
        }
    }
}


fn main() {
    println!("{}", serde_json::to_string(&ComparisonOperators::EQ(10)).unwrap());
    println!("{}", serde_json::to_string(&ComparisonOperators::NEQ(Provider::ProviderDiscord)).unwrap());
}