Introduce features to choose between SQlite or Postgres

plume-models/src/notifications.rs

@@ -1,7 +1,7 @@
-use chrono::NaiveDateTime;
-use diesel::{self, PgConnection, RunQueryDsl, QueryDsl, ExpressionMethods};
+use diesel::{self, RunQueryDsl, QueryDsl, ExpressionMethods};
 use serde_json;
 
+use {Connection, SqlDateTime};
 use comments::Comment;
 use follows::Follow;
 use likes::Like;
@@ -23,7 +23,7 @@ pub mod notification_kind {
 pub struct Notification {
     pub id: i32,
     pub user_id: i32,
-    pub creation_date: NaiveDateTime,
+    pub creation_date: SqlDateTime,
     pub kind: String,
     pub object_id: i32
 }
@@ -40,14 +40,14 @@ impl Notification {
     insert!(notifications, NewNotification);
     get!(notifications);
 
-    pub fn find_for_user(conn: &PgConnection, user: &User) -> Vec<Notification> {
+    pub fn find_for_user(conn: &Connection, user: &User) -> Vec<Notification> {
         notifications::table.filter(notifications::user_id.eq(user.id))
             .order_by(notifications::creation_date.desc())
             .load::<Notification>(conn)
             .expect("Couldn't load user notifications")
     }
 
-    pub fn page_for_user(conn: &PgConnection, user: &User, (min, max): (i32, i32)) -> Vec<Notification> {
+    pub fn page_for_user(conn: &Connection, user: &User, (min, max): (i32, i32)) -> Vec<Notification> {
         notifications::table.filter(notifications::user_id.eq(user.id))
             .order_by(notifications::creation_date.desc())
             .offset(min.into())
@@ -56,14 +56,14 @@ impl Notification {
             .expect("Couldn't load user notifications page")
     }
 
-    pub fn find<S: Into<String>>(conn: &PgConnection, kind: S, obj: i32) -> Option<Notification> {
+    pub fn find<S: Into<String>>(conn: &Connection, kind: S, obj: i32) -> Option<Notification> {
         notifications::table.filter(notifications::kind.eq(kind.into()))
             .filter(notifications::object_id.eq(obj))
             .get_result::<Notification>(conn)
             .ok()
     }
 
-    pub fn to_json(&self, conn: &PgConnection) -> serde_json::Value {
+    pub fn to_json(&self, conn: &Connection) -> serde_json::Value {
         let mut json = json!(self);
         json["object"] = json!(match self.kind.as_ref() {
             notification_kind::COMMENT => Comment::get(conn, self.object_id).map(|comment|