+ scripts/createdb.js + database part

Author: palkan

src/components/ShellConfigurator.tsx

@@ -25,7 +25,7 @@ export const ShellConfigurator: React.FC = () => {
 
   const conf = tutorialStore.lesson?.data?.custom?.shell as ShellConfig
   if (conf) {
-    const workdir = conf.workdir;
+    const { workdir } = conf;
 
     if (workdir) {
       terminal.input(`cd /home/tutorial${workdir} && clear\n`);

src/content/tutorial/3-hello-rails/2-autoloading/content.md

@@ -0,0 +1,26 @@
+---
+type: lesson
+title: Autoloading in Development
+editor: false
+terminal: false
+---
+
+Autoloading in Development
+----------------
+
+Developer happiness is a cornerstone philosophy of Rails and one way of
+achieving this is with automatic code reloading in development.
+
+Once you start the Rails server, new files or changes to existing files are
+detected and automatically loaded or reloaded as necessary. This allows you to
+focus on building without having to restart your Rails server after every
+change.
+
+You may also notice that Rails applications rarely use `require` statements like
+you may have seen in other programming languages. Rails uses naming conventions
+to require files automatically so you can focus on writing your application
+code.
+
+See
+[Autoloading and Reloading Constants](https://guides.rubyonrails.org/autoloading_and_reloading_constants.html)
+for more details.

src/content/tutorial/4-database/1-generate-model/_files/.tk-config.json

@@ -0,0 +1,3 @@
+{
+  "extends": "../../../../../templates/rails-new"
+}

src/content/tutorial/4-database/1-generate-model/_files/workspace/.keep

@@ -0,0 +1,49 @@
+---
+type: lesson
+title: Model generator
+custom:
+  shell:
+    workdir: "/workspace/store"
+---
+
+Generate a model
+----------------
+
+Active Record is a feature of Rails that maps relational databases to Ruby code.
+It helps generate the structured query language (SQL) for interacting with the
+database like creating, updating, and deleting tables and records. Our
+application is using SQLite which is the default for Rails.
+
+Let's start by adding a database table to our Rails application to add products
+to our simple e-commerce store. Run the following command in the terminal:
+
+```bash
+$ bin/rails generate model Product name:string
+```
+
+This command tells Rails to generate a model named `Product` which has a `name`
+column and type of `string` in the database. Later on, you'll learn how to add
+other column types.
+
+You should see the following in your terminal:
+
+```bash
+      invoke  active_record
+      create    db/migrate/20250526151900_create_products.rb
+      create    app/models/product.rb
+      invoke    test_unit
+      create      test/models/product_test.rb
+      create      test/fixtures/products.yml
+```
+
+This command does several things. It creates...
+
+1. A migration in the `db/migrate` folder.
+2. An Active Record model in `app/models/product.rb`.
+3. Tests and test fixtures for this model.
+
+:::info
+Model names are *singular*, because an instantiated model represents a
+single record in the database (i.e., You are creating a _product_ to add to the
+database.).
+:::

src/content/tutorial/4-database/1-generate-model/content.md

@@ -0,0 +1,3 @@
+{
+  "extends": "../../../../../templates/rails-new"
+}

src/content/tutorial/4-database/2-database-migrations/_files/.tk-config.json

@@ -0,0 +1,9 @@
+class CreateProducts < ActiveRecord::Migration[8.0]
+  def change
+    create_table :products do |t|
+      t.string :name
+
+      t.timestamps
+    end
+  end
+end

src/content/tutorial/4-database/2-database-migrations/_files/workspace/.keep

@@ -0,0 +1,7 @@
+# Read about fixtures at https://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
+
+one:
+  name: MyString
+
+two:
+  name: MyString