add functionality to show log

src/model/log.rs

@@ -51,4 +51,16 @@ LIMIT 1000
         ret.push_str("</rss>");
         ret.replace('\n', "")
     }
+
+    pub async fn show(db: &SqlitePool) -> String {
+        let mut ret = String::new();
+
+        for log in Self::last(db).await {
+            let utc_time: DateTime<Utc> = Utc::from_utc_datetime(&Utc, &log.created_at);
+            let local_time = utc_time.with_timezone(&Local);
+            ret.push_str(&format!("- {} - {}\n", local_time, log.msg));
+        }
+
+        ret
+    }
 }