userlib/enums/
disabilities.rs

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use serde::Deserialize;
use serde::Serialize;
use std::str;
use strum_macros::EnumString;
#[cfg(feature = "diesel")]
use {
    diesel::backend::Backend,
    diesel::deserialize::FromSql,
    diesel::pg::Pg,
    diesel::serialize::{IsNull, Output, ToSql},
    diesel::types::Varchar,
    diesel::{deserialize, not_none, serialize},
    diesel::{AsExpression, FromSqlRow},
    std::io::Write,
};

#[derive(Debug, PartialEq, Clone, Serialize, Deserialize, EnumString)]
#[cfg_attr(feature = "diesel", derive(AsExpression, FromSqlRow))]
#[cfg_attr(feature = "diesel", sql_type = "Varchar")]
pub enum Disabilities {
    Autism,
    PhysicalDisability,
    BehaviourDisorder,
    VisionImpairment,
    HearingImpairment,
    DifficultiesInLearning,
    IntellectualDisability,
    LanguageDisorder,
    AcquiredBrainInjury,
    MentalHealthDisorder,
}

#[cfg(feature = "diesel")]
impl ToSql<Varchar, Pg> for Disabilities {
    fn to_sql<W: Write>(&self, out: &mut Output<W, Pg>) -> serialize::Result {
        match *self {
            Disabilities::Autism => out.write_all(b"Autism")?,
            Disabilities::PhysicalDisability => out.write_all(b"PhysicalDisability")?,
            Disabilities::BehaviourDisorder => out.write_all(b"BehaviourDisorder")?,
            Disabilities::VisionImpairment => out.write_all(b"VisionImpairment")?,
            Disabilities::HearingImpairment => out.write_all(b"HearingImpairment")?,
            Disabilities::DifficultiesInLearning => out.write_all(b"DifficultiesInLearning")?,
            Disabilities::IntellectualDisability => out.write_all(b"IntellectualDisability")?,
            Disabilities::LanguageDisorder => out.write_all(b"LanguageDisorder")?,
            Disabilities::AcquiredBrainInjury => out.write_all(b"AcquiredBrainInjury")?,
            Disabilities::MentalHealthDisorder => out.write_all(b"MentalHealthDisorder")?,
        }
        Ok(IsNull::No)
    }
}

#[cfg(feature = "diesel")]
impl FromSql<Varchar, Pg> for Disabilities {
    fn from_sql(bytes: Option<&<Pg as Backend>::RawValue>) -> deserialize::Result<Self> {
        match not_none!(bytes) {
            b"Autism" => Ok(Disabilities::Autism),
            b"PhysicalDisability" => Ok(Disabilities::PhysicalDisability),
            b"BehaviourDisorder" => Ok(Disabilities::BehaviourDisorder),
            b"VisionImpairment" => Ok(Disabilities::VisionImpairment),
            b"HearingImpairment" => Ok(Disabilities::HearingImpairment),
            b"DifficultiesInLearning" => Ok(Disabilities::DifficultiesInLearning),
            b"IntellectualDisability" => Ok(Disabilities::IntellectualDisability),
            b"LanguageDisorder" => Ok(Disabilities::LanguageDisorder),
            b"AcquiredBrainInjury" => Ok(Disabilities::AcquiredBrainInjury),
            b"MentalHealthDisorder" => Ok(Disabilities::MentalHealthDisorder),
            _ => Err("Unrecognized enum variant".into()),
        }
    }
}