add de-serialization handling via serde

Signed-off-by: Ralf Zerres <ralf.zerres@networkx.de>

src/models/harms.rs

@@ -6,8 +6,7 @@
  */
 
 use chrono::NaiveDateTime;
-// in diesel, we need serde_derive to realize the needed traits to de- or serialize
-use serde_derive::*;
+use serde::{Deserialize, Serialize};
 
 use crate::schema::harms;
 

src/models/roles.rs

@@ -6,8 +6,7 @@
  */
 
 use chrono::NaiveDateTime;
-use serde_derive::*;
-//use serde;
+use serde::{Deserialize, Serialize};
 
 use crate::schema::roles;
 

src/models/user_roles.rs

@@ -6,7 +6,7 @@
  */
 
 use crate::schema::user_roles;
-use serde_derive::*;
+use serde::Deserialize;
 
 /// Structure of a user role record
 #[derive(Debug, Queryable, PartialEq)]

src/models/users.rs

@@ -6,8 +6,7 @@
  */
 
 use chrono::NaiveDateTime;
-// in diesel, we need serde_derive to realize the needed traits to de- or serialize
-use serde_derive::*;
+use serde::{Deserialize, Serialize};
 
 use crate::schema::users;