ref(backend) major refactor

- remove struct Post, use database schema and Map instead
- add sub_title
- replace NaiveDateTime with DateTime<Utc>

backend/src/model/mod.rs

@@ -1,18 +1,22 @@
-use chrono::NaiveDateTime;
-use serde::{Deserialize, Serialize};
-use sqlx::FromRow;
-use uuid::Uuid;
-
 pub mod post;
 
-#[derive(Debug, Serialize, Deserialize, FromRow)]
-pub struct Post {
-    pub post_id: Uuid,
-    pub title: String,
-    pub summary: String,
-    pub content: String,
-    pub last_update: NaiveDateTime,
-    pub first_update: NaiveDateTime,
-}
-
+pub const POST_DB_MODEL: &str = r##"
+CREATE TABLE IF NOT EXISTS Post
+(
+    post_id      UUID PRIMARY KEY,
+    title        VARCHAR(255) NOT NULL,
+    summary      TEXT,
+    sub_title    TEXT,
+    content      TEXT         NOT NULL,
+    last_update  TIMESTAMPTZ  NOT NULL,
+    first_update TIMESTAMPTZ  NOT NULL
+);
+"##;
 
+pub const TAG_DB_MODEL: &str = r##"
+CREATE TABLE IF NOT EXISTS Tag
+(
+    post_id UUID         NOT NULL,
+    tag     VARCHAR(255) NOT NULL
+);
+"##;