yay we can create posts

.gitignore

@@ -5,3 +5,4 @@ members/c-bindings/lib/libtest.so
 members/c-bindings/lib/libtest.so.1
 members/c-bindings/lib/libtest.so.1.0.1
 members/sqlite-demo/data/cats.db
+members/diesel-demo/data/dieseldemo.db

members/diesel-demo/migrations/2024-06-26-135835_create_posts/up.sql

@@ -1,8 +0,0 @@
--- Your SQL goes here
-CREATE TABLE `posts`(
-	`id` INT4 NOT NULL PRIMARY KEY,
-	`title` VARCHAR NOT NULL,
-	`body` TEXT NOT NULL,
-	`published` BOOL NOT NULL
-);
-

members/diesel-demo/migrations/2024-06-27-090844_create_table/up.sql

@@ -0,0 +1,8 @@
+-- Your SQL goes here
+CREATE TABLE `posts`(
+	`id` INTEGER NOT NULL PRIMARY KEY,
+	`title` TEXT NOT NULL,
+	`body` TEXT NOT NULL,
+	`published` BOOL NOT NULL DEFAULT false
+);
+

members/diesel-demo/src/main.rs

@@ -1,6 +1,6 @@
 use diesel::SqliteConnection;
 use diesel_demo::models::PostDraft;
-use libpt::log::{self, debug, info, trace, warn};
+use libpt::log::{self, debug, error, info, trace, warn};
 
 use diesel_demo as lib;
 
@@ -14,10 +14,6 @@ fn main() -> anyhow::Result<()> {
     let mut conn = lib::establish_connection()?;
     debug!("db connection established");
 
-    let posts = lib::load_posts(&mut conn)?;
-
-    lib::print_posts(&posts);
-
     trace!("entering the repl");
     repl(&mut conn)?;
     trace!("leaving the repl");
@@ -32,19 +28,24 @@ fn repl(conn: &mut SqliteConnection) -> anyhow::Result<()> {
         lib::read_buf_interactive(&mut buf)?;
         buf = buf.to_uppercase();
         if buf.starts_with("HELP") {
-            println!("\
+            println!(
+                "\
                 help                -     show this menu\n\
                 exit                -     exit the application\n\
-                new                 -     create a new post")
-        }
-        else if buf.starts_with("EXIT") {
+                list                -     list all posts\n\
+                new                 -     create a new post"
+            )
+        } else if buf.starts_with("EXIT") {
             break;
-        }
-        else if buf.starts_with("NEW") {
+        } else if buf.starts_with("LIST") {
+            let posts = lib::load_posts(conn)?;
+            lib::print_posts(&posts);
+        } else if buf.starts_with("NEW") {
             let post = PostDraft::interactive_create()?;
-            post.post(conn)?;
-        }
-        else {
+            let _ = post.post(conn).inspect_err(|e| {
+                error!("Could not submit the post: {e:?}");
+            });
+        } else {
             println!("Bad input: try 'help'");
         }
     }

members/diesel-demo/src/models.rs

@@ -1,6 +1,7 @@
 use std::io::{self, Read, Write};
 
 use diesel::prelude::*;
+use libpt::log::trace;
 
 use crate::schema::posts;
 
@@ -10,10 +11,9 @@ const EOF: &str = "CTRL+D";
 #[cfg(windows)]
 const EOF: &str = "CTRL+Z";
 
-#[derive(Queryable, Selectable)]
+#[derive(Queryable, Selectable, Debug)]
 #[diesel(table_name = crate::schema::posts)]
-#[diesel(check_for_backend(diesel::sqlite::Sqlite))] // optional but improves generated compiler
-                                                     // errors
+#[diesel(check_for_backend(diesel::sqlite::Sqlite))] // optional but improves generated compiler errors
 pub struct Post {
     pub id: i32,
     pub title: String,
@@ -21,8 +21,9 @@ pub struct Post {
     pub published: bool,
 }
 
-#[derive(Insertable)]
+#[derive(Insertable, Debug)]
 #[diesel(table_name = crate::schema::posts)]
+#[diesel(check_for_backend(diesel::sqlite::Sqlite))] // optional but improves generated compiler errors
 pub struct PostDraft {
     pub title: String,
     pub body: String,
@@ -36,6 +37,7 @@ impl PostDraft {
         }
     }
     pub fn post(self, conn: &mut SqliteConnection) -> anyhow::Result<Post> {
+        trace!("PostDraft to post: {self:#?}");
         Ok(diesel::insert_into(posts::table)
             .values(&self)
             .returning(Post::as_returning())
@@ -52,7 +54,7 @@ impl PostDraft {
         stdin.read_line(&mut title)?;
         title = title.trim().to_string();
 
-        println!("(End with {} when finished) Body:\n", EOF);
+        println!("(End with {} when finished) Body:", EOF);
         stdin.read_to_string(&mut body)?;
         body = body.trim().to_string();