Add: image database table, image test site, image upload support

app/controllers/test/images_controller.rb

@@ -0,0 +1,25 @@
+class Test::ImagesController < ApplicationController
+  def index
+    @images = Image.all
+    @image = Image.new
+  end
+
+  def create
+    @image = Image.new(image_params)
+
+    if @image.save
+      respond_to do |format|
+        format.turbo_stream
+        format.html { redirect_to test_images_path }
+      end
+    else
+      render :index, status: :unprocessable_entity
+    end
+  end
+
+  private
+
+  def image_params
+    params.require(:image).permit(:title, :file)
+  end
+end

app/helpers/test/images_helper.rb

@@ -0,0 +1,2 @@
+module Test::ImagesHelper
+end

app/models/image.rb

@@ -0,0 +1,5 @@
+class Image < ApplicationRecord
+  has_one_attached :file
+
+  validates :title, :file, presence: true
+end

app/views/test/images/_image.html.erb

@@ -0,0 +1,6 @@
+<div class="image-entry">
+  <h3><%= image.title %></h3>
+  <% if image.file.attached? %>
+    <%= image_tag image.file, width: 300 %>
+  <% end %>
+</div>

app/views/test/images/create.turbo_stream.erb

@@ -0,0 +1 @@
+<%= turbo_stream.prepend "images", partial: "test/images/image", locals: { image: @image } %>

app/views/test/images/index.html.erb

@@ -0,0 +1,20 @@
+<h1>Image Upload (Test)</h1>
+
+<%= form_with model: @image, url: test_images_path, data: { turbo_stream: true } do |form| %>
+  <%= form.label :title %>
+  <%= form.text_field :title %><br>
+
+  <%= form.label :file %>
+  <%= form.file_field :file %><br>
+
+  <%= form.submit "Upload" %>
+<% end %>
+
+<hr>
+
+<h2>Uploaded Images</h2>
+<div id="images">
+  <%= turbo_frame_tag "images" do %>
+    <%= render @images %>
+  <% end %>
+</div>

config/routes.rb

@@ -1,4 +1,11 @@
 Rails.application.routes.draw do
+  namespace :test do
+    resources :images
+    get "images/index"
+    get "images/new"
+    get "images/create"
+    get "images/show"
+  end
   resources :notes
   # Define your application routes per the DSL in https://guides.rubyonrails.org/routing.html
 

db/migrate/20250507082715_create_active_storage_tables.active_storage.rb

@@ -0,0 +1,57 @@
+# This migration comes from active_storage (originally 20170806125915)
+class CreateActiveStorageTables < ActiveRecord::Migration[7.0]
+  def change
+    # Use Active Record's configured type for primary and foreign keys
+    primary_key_type, foreign_key_type = primary_and_foreign_key_types
+
+    create_table :active_storage_blobs, id: primary_key_type do |t|
+      t.string   :key,          null: false
+      t.string   :filename,     null: false
+      t.string   :content_type
+      t.text     :metadata
+      t.string   :service_name, null: false
+      t.bigint   :byte_size,    null: false
+      t.string   :checksum
+
+      if connection.supports_datetime_with_precision?
+        t.datetime :created_at, precision: 6, null: false
+      else
+        t.datetime :created_at, null: false
+      end
+
+      t.index [ :key ], unique: true
+    end
+
+    create_table :active_storage_attachments, id: primary_key_type do |t|
+      t.string     :name,     null: false
+      t.references :record,   null: false, polymorphic: true, index: false, type: foreign_key_type
+      t.references :blob,     null: false, type: foreign_key_type
+
+      if connection.supports_datetime_with_precision?
+        t.datetime :created_at, precision: 6, null: false
+      else
+        t.datetime :created_at, null: false
+      end
+
+      t.index [ :record_type, :record_id, :name, :blob_id ], name: :index_active_storage_attachments_uniqueness, unique: true
+      t.foreign_key :active_storage_blobs, column: :blob_id
+    end
+
+    create_table :active_storage_variant_records, id: primary_key_type do |t|
+      t.belongs_to :blob, null: false, index: false, type: foreign_key_type
+      t.string :variation_digest, null: false
+
+      t.index [ :blob_id, :variation_digest ], name: :index_active_storage_variant_records_uniqueness, unique: true
+      t.foreign_key :active_storage_blobs, column: :blob_id
+    end
+  end
+
+  private
+    def primary_and_foreign_key_types
+      config = Rails.configuration.generators
+      setting = config.options[config.orm][:primary_key_type]
+      primary_key_type = setting || :primary_key
+      foreign_key_type = setting || :bigint
+      [ primary_key_type, foreign_key_type ]
+    end
+end

db/migrate/20250507082751_create_images.rb

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

db/schema.rb

@@ -10,11 +10,48 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[8.0].define(version: 2025_05_06_085403) do
+ActiveRecord::Schema[8.0].define(version: 2025_05_07_082751) do
+  create_table "active_storage_attachments", force: :cascade do |t|
+    t.string "name", null: false
+    t.string "record_type", null: false
+    t.bigint "record_id", null: false
+    t.bigint "blob_id", null: false
+    t.datetime "created_at", null: false
+    t.index ["blob_id"], name: "index_active_storage_attachments_on_blob_id"
+    t.index ["record_type", "record_id", "name", "blob_id"], name: "index_active_storage_attachments_uniqueness", unique: true
+  end
+
+  create_table "active_storage_blobs", force: :cascade do |t|
+    t.string "key", null: false
+    t.string "filename", null: false
+    t.string "content_type"
+    t.text "metadata"
+    t.string "service_name", null: false
+    t.bigint "byte_size", null: false
+    t.string "checksum"
+    t.datetime "created_at", null: false
+    t.index ["key"], name: "index_active_storage_blobs_on_key", unique: true
+  end
+
+  create_table "active_storage_variant_records", force: :cascade do |t|
+    t.bigint "blob_id", null: false
+    t.string "variation_digest", null: false
+    t.index ["blob_id", "variation_digest"], name: "index_active_storage_variant_records_uniqueness", unique: true
+  end
+
+  create_table "images", force: :cascade do |t|
+    t.string "title"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+  end
+
   create_table "notes", force: :cascade do |t|
     t.string "title"
     t.text "body"
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
   end
+
+  add_foreign_key "active_storage_attachments", "active_storage_blobs", column: "blob_id"
+  add_foreign_key "active_storage_variant_records", "active_storage_blobs", column: "blob_id"
 end

test/controllers/test/images_controller_test.rb

@@ -0,0 +1,23 @@
+require "test_helper"
+
+class Test::ImagesControllerTest < ActionDispatch::IntegrationTest
+  test "should get index" do
+    get test_images_index_url
+    assert_response :success
+  end
+
+  test "should get new" do
+    get test_images_new_url
+    assert_response :success
+  end
+
+  test "should get create" do
+    get test_images_create_url
+    assert_response :success
+  end
+
+  test "should get show" do
+    get test_images_show_url
+    assert_response :success
+  end
+end

test/fixtures/images.yml

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

test/models/image_test.rb

@@ -0,0 +1,7 @@
+require "test_helper"
+
+class ImageTest < ActiveSupport::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+end