Smoothly wrote post find function

src/db/posts.rs

@@ -4,7 +4,7 @@ use serde::{Deserialize, Serialize};
 use uuid::Uuid;
 
 use crate::{
-    errors::{RbError, RbResult},
+    errors::{RbError, RbResult, RbOption},
     schema::{posts, posts::dsl::*},
 };
 
@@ -48,6 +48,15 @@ pub fn get(conn: &PgConnection, offset_: u32, limit_: u32) -> RbResult<Vec<Post>
         .map_err(|_| RbError::DbError("Couldn't query posts."))?)
 }
 
+pub fn find(conn: &PgConnection, id_: &Uuid) -> RbOption<Post>
+{
+    match posts.find(id_).first(conn) {
+        Ok(val) => Ok(Some(val)),
+        Err(diesel::NotFound) => Ok(None),
+        _ => Err(RbError::DbError("Couldn't find post.")),
+    }
+}
+
 pub fn create(conn: &PgConnection, new_post: &NewPost) -> RbResult<Post>
 {
     Ok(insert_into(posts)

src/db/sections.rs

@@ -12,6 +12,7 @@ pub struct Section
 {
     pub id: Uuid,
     pub title: String,
+    pub shortname: String,
     pub description: Option<String>,
     pub is_default: bool,
     pub has_titles: bool,
@@ -23,6 +24,7 @@ pub struct Section
 pub struct NewSection
 {
     title: String,
+    pub shortname: String,
     description: Option<String>,
     is_default: Option<bool>,
     has_titles: Option<bool>,
@@ -34,6 +36,7 @@ pub struct NewSection
 pub struct PatchSection
 {
     title: Option<String>,
+    shortname: Option<String>,
     description: Option<String>,
     is_default: Option<bool>,
     has_titles: Option<bool>,

src/errors.rs

@@ -87,4 +87,8 @@ impl<'r> Responder<'r, 'static> for RbError
     }
 }
 
+/// Type alias for results that can return an RbError
 pub type RbResult<T> = std::result::Result<T, RbError>;
+
+/// Type alias for optional results that can fail & return an RbError
+pub type RbOption<T> = RbResult<Option<T>>;

src/posts.rs

@@ -1,6 +1,6 @@
 use rocket::serde::json::Json;
 
-use crate::{db, errors::RbResult, guards::Admin, RbDbConn};
+use crate::{db, errors::RbResult, errors::RbOption, guards::Admin, RbDbConn};
 
 #[get("/?<offset>&<limit>")]
 pub async fn get(conn: RbDbConn, offset: u32, limit: u32) -> RbResult<Json<Vec<db::Post>>>
@@ -23,6 +23,12 @@ pub async fn create(
     ))
 }
 
+#[get("/<id>")]
+pub async fn find(conn: RbDbConn, id: uuid::Uuid) -> RbOption<Json<db::Post>>
+{
+    Ok(conn.run(move |c| db::posts::find(c, &id)).await?.and_then(|p| Some(Json(p))))
+}
+
 #[patch("/<id>", data = "<patch_post>")]
 pub async fn patch(
     _admin: Admin,

src/schema.rs

@@ -21,6 +21,7 @@ table! {
     sections (id) {
         id -> Uuid,
         title -> Varchar,
+        shortname -> Varchar,
         description -> Nullable<Text>,
         is_default -> Bool,
         has_titles -> Bool,
@@ -40,4 +41,9 @@ table! {
 joinable!(posts -> sections (section_id));
 joinable!(refresh_tokens -> users (user_id));
 
-allow_tables_to_appear_in_same_query!(posts, refresh_tokens, sections, users,);
+allow_tables_to_appear_in_same_query!(
+    posts,
+    refresh_tokens,
+    sections,
+    users,
+);