diff --git a/rust_web.org b/rust_web.org
index 2291ef7..e604887 100644
--- a/rust_web.org
+++ b/rust_web.org
@@ -523,11 +523,6 @@
 
 ** Lets create a small web app
    A chat box where everybody can post.
-
-*** Caution
-    HTML is not disabled!
-
-** Let us start
    #+BEGIN_CENTER
    #+LaTeX:\includegraphics[width = 0.7\textwidth]{img/challenge-accepted-lets-code-it.jpg}
    #+END_CENTER
diff --git a/simple_text_board/Cargo.lock b/simple_text_board/Cargo.lock
index 77d9e9e..a9cf90d 100644
--- a/simple_text_board/Cargo.lock
+++ b/simple_text_board/Cargo.lock
@@ -1,5 +1,7 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+version = 3
+
 [[package]]
 name = "addr2line"
 version = "0.14.1"
@@ -79,6 +81,12 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "anyhow"
+version = "1.0.40"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "28b2cd92db5cbd74e8e5028f7e27dd7aa3090e89e4f2a197cc7c8dfb69c7063b"
+
 [[package]]
 name = "atty"
 version = "0.2.14"
@@ -1179,6 +1187,7 @@ dependencies = [
 name = "simple_text_board"
 version = "0.1.0"
 dependencies = [
+ "anyhow",
  "chrono",
  "diesel",
  "log 0.4.13",
diff --git a/simple_text_board/Cargo.toml b/simple_text_board/Cargo.toml
index 05a9df5..28da920 100644
--- a/simple_text_board/Cargo.toml
+++ b/simple_text_board/Cargo.toml
@@ -10,6 +10,7 @@ chrono = { version = "0.4", features = ["serde"] }
 diesel = { version = "1.4", features = ["sqlite", "chrono"] }
 log = "0.4"
 serde = { version = "1.0", features = ["derive"] }
+anyhow = "1.0"
 
 [dependencies.rocket_contrib]
 version = "0.4"
diff --git a/simple_text_board/src/models.rs b/simple_text_board/src/models.rs
index dc8078b..7698ce9 100644
--- a/simple_text_board/src/models.rs
+++ b/simple_text_board/src/models.rs
@@ -15,7 +15,7 @@ pub struct NewPost<'a> {
 }
 
 impl NewPost<'_> {
-    pub fn insert(&self, conn: &diesel::SqliteConnection) -> QueryResult<usize> {
+    pub fn insert(&self, conn: &SqliteConnection) -> QueryResult<usize> {
         diesel::insert_into(table_posts).values(self).execute(conn)
     }
 }
diff --git a/simpler_text_board/.#Cargo.toml b/simpler_text_board/.#Cargo.toml
new file mode 120000
index 0000000..89a040b
--- /dev/null
+++ b/simpler_text_board/.#Cargo.toml
@@ -0,0 +1 @@
+finga@serenity.11826:1618395756
\ No newline at end of file
diff --git a/simpler_text_board/.env b/simpler_text_board/.env
new file mode 100644
index 0000000..d316ee8
--- /dev/null
+++ b/simpler_text_board/.env
@@ -0,0 +1 @@
+DATABASE_URL=simpler_text_board.sqlite
diff --git a/simpler_text_board/.gitignore b/simpler_text_board/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/simpler_text_board/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/simpler_text_board/Cargo.lock b/simpler_text_board/Cargo.lock
new file mode 100644
index 0000000..06e2733
--- /dev/null
+++ b/simpler_text_board/Cargo.lock
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diff --git a/simpler_text_board/Cargo.toml b/simpler_text_board/Cargo.toml
new file mode 100644
index 0000000..5cde37c
--- /dev/null
+++ b/simpler_text_board/Cargo.toml
@@ -0,0 +1,18 @@
+[package]
+name = "simpler_text_board"
+version = "0.1.0"
+authors = ["finga <finga@onders.org>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+rocket = "0.4"
+diesel = { version = "1.4", features = ["sqlite"] }
+serde = { version = "1.0", features = ["derive"] }
+anyhow = "1.0"
+
+[dependencies.rocket_contrib]
+version = "0.4"
+default-features = false
+features = ["diesel_sqlite_pool", "tera_templates"]
diff --git a/simpler_text_board/Rocket.toml b/simpler_text_board/Rocket.toml
new file mode 100644
index 0000000..823aeb6
--- /dev/null
+++ b/simpler_text_board/Rocket.toml
@@ -0,0 +1,8 @@
+[development]
+address = "0.0.0.0"
+port = 8000
+workers = 2
+keep_alive = 5
+
+[global.databases]
+sqlite = { url = "simpler_text_board.sqlite" }
diff --git a/simpler_text_board/diesel.toml b/simpler_text_board/diesel.toml
new file mode 100644
index 0000000..92267c8
--- /dev/null
+++ b/simpler_text_board/diesel.toml
@@ -0,0 +1,5 @@
+# For documentation on how to configure this file,
+# see diesel.rs/guides/configuring-diesel-cli
+
+[print_schema]
+file = "src/schema.rs"
diff --git a/simpler_text_board/migrations/.gitkeep b/simpler_text_board/migrations/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/simpler_text_board/migrations/2021-04-14-185257_posts/down.sql b/simpler_text_board/migrations/2021-04-14-185257_posts/down.sql
new file mode 100644
index 0000000..1651d89
--- /dev/null
+++ b/simpler_text_board/migrations/2021-04-14-185257_posts/down.sql
@@ -0,0 +1 @@
+DROP TABLE posts;
diff --git a/simpler_text_board/migrations/2021-04-14-185257_posts/up.sql b/simpler_text_board/migrations/2021-04-14-185257_posts/up.sql
new file mode 100644
index 0000000..2815dea
--- /dev/null
+++ b/simpler_text_board/migrations/2021-04-14-185257_posts/up.sql
@@ -0,0 +1,7 @@
+CREATE TABLE posts (
+id INTEGER NOT NULL PRIMARY KEY,
+author VARCHAR NOT NULL,
+email VARCHAR NOT NULL,
+title VARCHAR NOT NULL,
+content VARCHAR NOT NULL
+);
diff --git a/simpler_text_board/simpler_text_board.sqlite b/simpler_text_board/simpler_text_board.sqlite
new file mode 100644
index 0000000..a180f85
Binary files /dev/null and b/simpler_text_board/simpler_text_board.sqlite differ
diff --git a/simpler_text_board/src/main.rs b/simpler_text_board/src/main.rs
new file mode 100644
index 0000000..985b6d3
--- /dev/null
+++ b/simpler_text_board/src/main.rs
@@ -0,0 +1,70 @@
+#![feature(decl_macro)]
+
+#[macro_use]
+extern crate diesel;
+
+use std::{collections::HashMap, net::SocketAddr};
+
+use anyhow;
+use diesel::SqliteConnection;
+use rocket::{
+    get, post,
+    request::{FlashMessage, Form},
+    response::{Flash, Redirect},
+    routes, uri,
+};
+use rocket_contrib::{database, templates::Template};
+use serde::Serialize;
+
+mod models;
+mod schema;
+
+use models::{NewPost, Post};
+
+#[database("sqlite")]
+struct DbCon(SqliteConnection);
+
+#[derive(Serialize)]
+struct Posts {
+    posts: Vec<Post>,
+}
+
+#[get("/")]
+fn index(conn: DbCon) -> anyhow::Result<Template> {
+    Ok(Template::render(
+        "index",
+        Posts {
+            posts: Post::get_all(&conn)?,
+        },
+    ))
+}
+
+#[get("/create")]
+fn create_form(flash: Option<FlashMessage>) -> Template {
+    let mut context = HashMap::new();
+
+    if let Some(ref msg) = flash {
+        context.insert("flash", msg.msg());
+    }
+
+    Template::render("create", &context)
+}
+
+#[post("/create", data = "<post>")]
+fn create_post(conn: DbCon, post: Form<NewPost>) -> Result<Redirect, Flash<Redirect>> {
+    match post.insert(&conn) {
+        Ok(_) => Ok(Redirect::to(uri!(index))),
+        Err(e) => Err(Flash::error(
+            Redirect::to(uri!(create_form)),
+            "Could not create post.".to_string(),
+        )),
+    }
+}
+
+fn main() {
+    rocket::ignite()
+        .mount("/", routes![index, create_form, create_post])
+        .attach(DbCon::fairing())
+        .attach(Template::fairing())
+        .launch();
+}
diff --git a/simpler_text_board/src/models.rs b/simpler_text_board/src/models.rs
new file mode 100644
index 0000000..1202c46
--- /dev/null
+++ b/simpler_text_board/src/models.rs
@@ -0,0 +1,34 @@
+use crate::schema::posts::{self, dsl::posts as table_posts};
+use diesel::{QueryResult, RunQueryDsl, SqliteConnection};
+use rocket::FromForm;
+use serde::Serialize;
+
+#[derive(Queryable, Serialize)]
+pub struct Post {
+    pub id: i32,
+    pub author: String,
+    pub email: String,
+    pub title: String,
+    pub content: String,
+}
+
+impl Post {
+    pub fn get_all(conn: &SqliteConnection) -> QueryResult<Vec<Post>> {
+        posts::table.load::<Post>(conn)
+    }
+}
+
+#[derive(Insertable, FromForm)]
+#[table_name = "posts"]
+pub struct NewPost {
+    pub author: String,
+    pub email: String,
+    pub title: String,
+    pub content: String,
+}
+
+impl NewPost {
+    pub fn insert(&self, conn: &SqliteConnection) -> QueryResult<usize> {
+        diesel::insert_into(table_posts).values(self).execute(conn)
+    }
+}
diff --git a/simpler_text_board/src/schema.rs b/simpler_text_board/src/schema.rs
new file mode 100644
index 0000000..8e136dc
--- /dev/null
+++ b/simpler_text_board/src/schema.rs
@@ -0,0 +1,9 @@
+table! {
+    posts (id) {
+        id -> Integer,
+        author -> Text,
+        email -> Text,
+        title -> Text,
+        content -> Text,
+    }
+}
diff --git a/simpler_text_board/templates/base.html.tera b/simpler_text_board/templates/base.html.tera
new file mode 100644
index 0000000..1726769
--- /dev/null
+++ b/simpler_text_board/templates/base.html.tera
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width" />
+    <title>simpler text board</title>
+  </head>
+  <body>
+    <ul>
+      <li><a href="/">home</a></li>
+      <li><a href="/create">create post</a></li>
+    </ul>
+    {% block content %} {% endblock %}
+  </body>
+</html>
diff --git a/simpler_text_board/templates/create.html.tera b/simpler_text_board/templates/create.html.tera
new file mode 100644
index 0000000..a3cdd1d
--- /dev/null
+++ b/simpler_text_board/templates/create.html.tera
@@ -0,0 +1,23 @@
+{% extends "base" %}
+
+{% block content %}
+<h1> simpler text board</h1>
+<h2>create a post</h2>
+{% if flash %}<p>{{ flash }}</p>{% endif %}
+<form action="/create" method="post" accept-charset="utf-8">
+  <label for="author">author name</label>
+  <input type="text" placeholder="author" name="author" required>
+
+  <label for="email">email</label>
+  <input type="text" placeholder="email" name="email">
+
+  <label for="title">title</label>
+  <input type="text" placeholder="title" name="title" required>
+
+  <label for="content">content</label>
+  <textarea type="text" placeholder="content" name="content" rows="8" cols="50" required>
+  </textarea>
+
+  <button type="submit">create</button>
+</form>
+{% endblock content %}
diff --git a/simpler_text_board/templates/index.html.tera b/simpler_text_board/templates/index.html.tera
new file mode 100644
index 0000000..4202fb2
--- /dev/null
+++ b/simpler_text_board/templates/index.html.tera
@@ -0,0 +1,10 @@
+{% extends "base" %}
+
+{% block content %}
+<h1> simpler text board</h1>
+<ul>
+  {% for post in posts %}
+  <li>{{ loop.index }} - {{ post.title }} - {{ post.author }}</li>
+  {% endfor %}
+</ul>
+{% endblock content %}