tutorlib/enums/
search_status.rs

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use serde::Deserialize;
use serde::Serialize;
use std::fmt;
use std::io::Write;
use std::str;

#[cfg(feature = "diesel")]
use {
    diesel::backend::Backend,
    diesel::deserialize::FromSql,
    diesel::pg::Pg,
    diesel::serialize::{IsNull, Output, ToSql},
    diesel::sql_types::Varchar,
    diesel::{deserialize, not_none, serialize},
};

#[derive(Debug, PartialEq, Clone, Serialize, Deserialize)]
#[cfg_attr(feature = "diesel", derive(AsExpression, FromSqlRow))]
#[cfg_attr(feature = "diesel", sql_type = "Varchar")]
pub enum SearchStatus {
    Active,
    Inactive,
}

#[cfg(feature = "diesel")]
impl ToSql<Varchar, Pg> for SearchStatus {
    fn to_sql<W: Write>(&self, out: &mut Output<W, Pg>) -> serialize::Result {
        match *self {
            SearchStatus::Active => out.write_all(b"Active")?,
            SearchStatus::Inactive => out.write_all(b"Inactive")?,
        }
        Ok(IsNull::No)
    }
}

#[cfg(feature = "diesel")]
impl FromSql<Varchar, Pg> for SearchStatus {
    fn from_sql(bytes: Option<&<Pg as Backend>::RawValue>) -> deserialize::Result<Self> {
        match not_none!(bytes) {
            b"Active" => Ok(SearchStatus::Active),
            b"Inactive" => Ok(SearchStatus::Inactive),
            _ => Err(format!(
                "Unrecognized enum variant \"{}\"",
                str::from_utf8(bytes.unwrap()).unwrap()
            )
            .into()),
        }
    }
}

impl Default for SearchStatus {
    fn default() -> Self {
        SearchStatus::Inactive
    }
}

impl fmt::Display for SearchStatus {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        write!(f, "{:?}", self)
    }
}