ref validate performance

src/model/reference.rs

@@ -1,3 +1,4 @@
+use mongodb::options::FindOneOptions;
 use serde::{de::DeserializeOwned, Deserialize, Serialize};
 
 use crate::{col, get_mongo, id_of};
@@ -30,6 +31,23 @@ impl Reference {
         self.0.starts_with(col)
     }
 
+    /// Check for existence of reference
+    pub async fn exists(&self) -> Option<bool> {
+        let (col, id) = self.0.split_once("::")?;
+        let db = get_mongo!();
+        let col = col!(db, col);
+        let res = col
+            .find_one(
+                id_of!(id),
+                FindOneOptions::builder()
+                    .projection(mongodb::bson::doc! { "_id": 1})
+                    .build(),
+            )
+            .await
+            .ok()?;
+        Some(res.is_some())
+    }
+
     /// Get the raw `Document` behind the `Reference` from the database.
     pub async fn get_document(&self) -> Option<mongodb::bson::Document> {
         let (col, id) = self.0.split_once("::")?;
@@ -50,7 +68,7 @@ impl Validate for Reference {
         //self.0.split_once("::").is_some()
 
         // right
-        self.get_document().await.is_some()
+        self.exists().await.unwrap_or(false)
     }
 }