Fixed option/nullable fields

migrations/2020-03-01-120634_create_users/up.sql

@@ -1,8 +1,8 @@
 -- Your SQL goes here
 CREATE TABLE users (
     id SERIAL PRIMARY KEY,
-    username VARCHAR(32),
-    is_active BOOLEAN DEFAULT TRUE,
+    username VARCHAR(32) UNIQUE NOT NULL,
+    is_active BOOLEAN DEFAULT TRUE NOT NULL,
     created_at TIMESTAMPTZ DEFAULT now(),
     updated_at TIMESTAMPTZ DEFAULT NULL
 );

src/models.rs

@@ -3,13 +3,12 @@ use chrono::{
 };
 use diesel::prelude::*;
 use diesel::PgConnection;
-use serde_derive::Serialize;
 
 #[derive(Queryable, Debug)]
 pub struct User {
     pub id: i32,
-    pub username: Option<String>,
-    pub is_active: Option<bool>,
+    pub username: String,
+    pub is_active: bool,
     pub created_at: Option<NaiveDateTime>,
     pub updated_at: Option<NaiveDateTime>,
 }

src/schema.rs

@@ -11,8 +11,8 @@ table! {
 table! {
     users (id) {
         id -> Int4,
-        username -> Nullable<Varchar>,
-        is_active -> Nullable<Bool>,
+        username -> Varchar,
+        is_active -> Bool,
         created_at -> Nullable<Timestamptz>,
         updated_at -> Nullable<Timestamptz>,
     }