Refactor

src/routes/mod.rs

@@ -0,0 +1 @@
+pub mod renner;

src/routes/renner.rs

@@ -0,0 +1,36 @@
+use actix_web::{get, web, web::Query, HttpResponse, Responder};
+use sqlx::{Pool, Mssql};
+use std::sync::Mutex;
+use serde::{Deserialize};
+
+use crate::models::gerbil::Gerbil;
+
+#[derive(Deserialize)]
+struct RennerQueryParam {
+    name: Option<String>,
+}
+
+
+#[get("/renner")]
+async fn renner(data: web::Data<Mutex<Pool<Mssql>>>, params: Query<RennerQueryParam>) -> impl Responder {
+    let mut sql = String::from("SELECT name FROM renner");
+
+    let mut pairs = Vec::new();
+    match &params.name
+    {
+        Some(val) => pairs.push(format!("name='{0}'", val)),
+        None => ()
+    }
+    if pairs.len() != 0
+    {
+        let ret = pairs.iter().skip(1).fold(String::from(&pairs[0]), |sum, x| {format!("{0} AND {1}", sum, x)});
+        sql.push_str(&format!(" WHERE {}",ret));
+    }
+    println!("{}",sql);
+    let data = data.lock().unwrap();
+    let rows = sqlx::query_as::<_,Gerbil>(&sql)
+        .fetch_all(&(*data))
+        .await
+        .expect("no connection to database");
+    HttpResponse::Ok().json(rows)
+}