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use serde::Deserialize;
use anyhow::Error;
use anyhow::Result;
use diesel::ExpressionMethods;
use diesel::RunQueryDsl;
use diesel::query_dsl::methods::FilterDsl;
use diesel::Connection;
use crate::db::DbPool;
use crate::schema::countries;
#[derive(Debug, Deserialize, diesel::Queryable, getset::Getters)]
pub struct Country {
id: i32,
#[getset(get = "pub")]
name: String,
}
#[derive(Insertable)]
#[table_name = "countries"]
struct NewCountry<'a> {
name: &'a str
}
impl Country {
pub fn create_or_fetch(db: &DbPool, name: &str) -> Result<Self> {
use crate::schema;
let conn = db.get()?;
conn.transaction::<_, Error, _>(|| {
let new_country = NewCountry { name };
diesel::insert_into(schema::countries::table)
.values(&new_country)
.on_conflict_do_nothing()
.execute(&conn)?;
schema::countries::table
.filter(schema::countries::name.eq(name))
.first::<Country>(&conn)
.map_err(Error::from)
})
}
}
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