✨🥔 Marketplace: Products have TaxRates

- #1137

There's a bit of low-hanging 🌸, but I don't want to block on them. In
particular:

- It would be nice if we had a well-styled `Component` or partial for
  the `collection_check_boxes` form helper, since right now the
  `input[type="checkbox"]` and the `label` for each option are stacked
  on top of each other. Nasteh!
- There's probably a way to show the tax rate amount with a humanized
  percentage when selecting options, but I didn't want to figure it out

app/furniture/marketplace/product.rb

@@ -16,7 +16,8 @@ class Product < Record
     has_many :ordered_products, inverse_of: :product, dependent: :destroy
     has_many :orders, through: :ordered_products, inverse_of: :products
 
-    has_many :tax_rates, inverse_of: :products
+    has_many :product_tax_rates, inverse_of: :product
+    has_many :tax_rates, through: :product_tax_rates, inverse_of: :products
 
     attribute :name, :string
     validates :name, presence: true

app/furniture/marketplace/product_policy.rb

@@ -4,7 +4,7 @@ class Marketplace
   class ProductPolicy < Policy
     alias_method :product, :object
     def permitted_attributes(_params = nil)
-      %i[name description price_cents price_currency price]
+      %i[name description price_cents price_currency price] + [tax_rate_ids: []]
     end
 
     def update?

app/furniture/marketplace/product_tax_rate.rb

@@ -0,0 +1,8 @@
+class Marketplace
+  class ProductTaxRate < Record
+    self.table_name = :marketplace_product_tax_rates
+
+    belongs_to :product, inverse_of: :product_tax_rates
+    belongs_to :tax_rate, inverse_of: :product_tax_rates
+  end
+end

app/furniture/marketplace/products/_form.html.erb

@@ -2,5 +2,6 @@
   <%= render "text_field", { attribute: :name, form: f} %>
   <%= render "text_area", { attribute: :description, form: f} %>
   <%= render "money_field", { attribute: :price, form: f, min: 0, step: 0.01} %>
+  <%= render "collection_check_boxes", { attribute: :tax_rate_ids, collection: marketplace.tax_rates, value_method: :id, text_method: :label, form: f} %>
   <%= f.submit %>
 <% end %>

app/furniture/marketplace/products/_product.html.erb

@@ -9,6 +9,11 @@
   <td class="hidden px-3 py-4 text-sm text-gray-500 lg:table-cell">
     <%= product.description %>
   </td>
+
+  <td class="hidden px-3 py-4 text-sm text-gray-500 sm:table-cell">
+    <%= render product.tax_rates %>
+  </td>
+
   <td class="hidden px-3 py-4 text-sm text-gray-500 sm:table-cell">
     <%= humanized_money_with_symbol(product.price) %>
   </td>

app/furniture/marketplace/products/index.html.erb

@@ -9,6 +9,11 @@
         <th scope="col" class="hidden px-3 py-3.5 text-left text-sm font-semibold text-gray-900 lg:table-cell">
           <%= Marketplace::Product.human_attribute_name(:description) %>
         </th>
+
+        <th scope="col" class="hidden px-3 py-3.5 text-left text-sm font-semibold text-gray-900 sm:table-cell">
+          <%= Marketplace::Product.human_attribute_name(:tax_rates) %>
+        </th>
+
         <th scope="col" class="hidden px-3 py-3.5 text-left text-sm font-semibold text-gray-900 sm:table-cell">
           <%= Marketplace::Product.human_attribute_name(:price) %>
         </th>

app/furniture/marketplace/tax_rate.rb

@@ -4,6 +4,7 @@ class TaxRate < Record
     self.location_parent = :marketplace
 
     belongs_to :marketplace, inverse_of: :tax_rates
-    has_many :tax_rates, inverse_of: :tax_rates
+    has_many :product_tax_rates, inverse_of: :tax_rate
+    has_many :products, through: :product_tax_rates, inverse_of: :tax_rates
   end
 end

app/views/application/_collection_check_boxes.html.erb

@@ -0,0 +1,4 @@
+<div>
+  <%= form.label attribute %>
+  <%= form.collection_check_boxes attribute, collection, value_method, text_method  %>
+</div>

db/migrate/20230307031329_create_marketplace_product_tax_rates.rb

@@ -0,0 +1,11 @@
+class CreateMarketplaceProductTaxRates < ActiveRecord::Migration[7.0]
+  def change
+    remove_reference :marketplace_products, :tax_rate
+
+    create_table :marketplace_product_tax_rates, id: :uuid do |t|
+      t.references :tax_rate, type: :uuid, foreign_key: {to_table: :marketplace_tax_rates}
+      t.references :product, type: :uuid, foreign_key: {to_table: :marketplace_products}
+      t.timestamps
+    end
+  end
+end

db/schema.rb

@@ -22,12 +22,12 @@
     "expired",
     "ignored",
     "revoked",
-    "sent"
+    "sent",
   ], force: :cascade
 
   create_enum :membership_status, [
     "active",
-    "revoked"
+    "revoked",
   ], force: :cascade
 
   create_table "active_storage_attachments", id: :uuid, default: -> { "gen_random_uuid()" }, force: :cascade do |t|
@@ -140,6 +140,15 @@
     t.index ["shopper_id"], name: "index_marketplace_orders_on_shopper_id"
   end
 
+  create_table "marketplace_product_tax_rates", id: :uuid, default: -> { "gen_random_uuid()" }, force: :cascade do |t|
+    t.uuid "tax_rate_id"
+    t.uuid "product_id"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.index ["product_id"], name: "index_marketplace_product_tax_rates_on_product_id"
+    t.index ["tax_rate_id"], name: "index_marketplace_product_tax_rates_on_tax_rate_id"
+  end
+
   create_table "marketplace_products", id: :uuid, default: -> { "gen_random_uuid()" }, force: :cascade do |t|
     t.uuid "marketplace_id"
     t.string "name"
@@ -148,9 +157,7 @@
     t.string "price_currency", default: "USD", null: false
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
-    t.uuid "tax_rate_id"
     t.index ["marketplace_id"], name: "index_marketplace_products_on_marketplace_id"
-    t.index ["tax_rate_id"], name: "index_marketplace_products_on_tax_rate_id"
   end
 
   create_table "marketplace_shoppers", id: :uuid, default: -> { "gen_random_uuid()" }, force: :cascade do |t|
@@ -231,8 +238,9 @@
   add_foreign_key "marketplace_cart_products", "marketplace_orders", column: "cart_id"
   add_foreign_key "marketplace_cart_products", "marketplace_products", column: "product_id"
   add_foreign_key "marketplace_orders", "marketplace_shoppers", column: "shopper_id"
+  add_foreign_key "marketplace_product_tax_rates", "marketplace_products", column: "product_id"
+  add_foreign_key "marketplace_product_tax_rates", "marketplace_tax_rates", column: "tax_rate_id"
   add_foreign_key "marketplace_products", "furniture_placements", column: "marketplace_id"
-  add_foreign_key "marketplace_products", "marketplace_tax_rates", column: "tax_rate_id"
   add_foreign_key "marketplace_shoppers", "people"
   add_foreign_key "marketplace_tax_rates", "furniture_placements", column: "marketplace_id"
   add_foreign_key "memberships", "invitations"

spec/furniture/marketplace/products_controller_request_spec.rb

@@ -8,7 +8,8 @@
 
   describe "#create" do
     it "Creates a Product in the Marketplace" do
-      attributes = attributes_for(:marketplace_product)
+      tax_rate = create(:marketplace_tax_rate, marketplace: marketplace)
+      attributes = attributes_for(:marketplace_product, tax_rate_ids: [tax_rate.id])
 
       sign_in(space, member)
 
@@ -22,6 +23,7 @@
       expect(created_product.description).to eql(attributes[:description])
       expect(created_product.price_cents).to eql(attributes[:price_cents])
       expect(created_product.price_currency).to eql(Money.default_currency.to_s)
+      expect(created_product.tax_rates).to include(tax_rate)
     end
   end