now update the "updated_at" field when modify a post

src/controllers.rs

@@ -1,3 +1,4 @@
+use chrono::prelude::Utc;
 use diesel::pg::PgConnection;
 use diesel::result::Error;
 use diesel::Connection;
@@ -67,11 +68,14 @@ pub mod posts {
         use crate::schema::posts::dsl::*;
         let connection = establish_connection();
 
+        let date = Utc::now().naive_utc();
+
         diesel::update(posts.filter(id.eq(updated_id)))
             .set((
                 title.eq(&new_post.title),
                 content.eq(&new_post.content),
                 published.eq(&new_post.published),
+                updated_at.eq(&date),
             ))
             .get_result(&connection)
     }