US-14 Merchant Invoices Index

app/controllers/merchant_invoices_controller.rb

@@ -0,0 +1,10 @@
+class MerchantInvoicesController < ApplicationController
+  def index
+    @merchant = Merchant.find(params[:merchant_id])
+    @invoices = Invoice.invoices_for_merchant(@merchant.id)
+  end
+
+  def show
+
+  end
+end

app/models/invoice.rb

@@ -7,4 +7,8 @@ class Invoice < ApplicationRecord
   enum status: ["completed", "cancelled", "in progress"]
 
   validates :status, presence: true
+
+  def self.invoices_for_merchant(merchant_id)
+    select("invoices.*").joins(invoice_items: :item).where("merchant_id = ?", merchant_id)
+  end
 end

app/views/merchant_invoices/index.html.erb

@@ -0,0 +1,6 @@
+<%= @merchant.name %>
+<p>My Invoices</p>
+
+<% @invoices.each do |invoice| %>
+  <%= link_to "Invoice ##{invoice.id}", merchant_invoice_path(@merchant, invoice) %>
+<% end %>

config/routes.rb

@@ -8,9 +8,9 @@
     get "/", to: "dashboards#welcome"
   end
 
-  resources :merchants, param: :merchant_id do
-    resources :items, only: [:index]
-    resources :invoices, only: [:index]
+  resources :merchants, param: :id do
+    resources :items, controller: "merchant_items", only: [:index]
+    resources :invoices, controller: "merchant_invoices", only: [:index, :show]
     get "dashboard", on: :member, action: :show
   end
 end

spec/factories/customers.rb

@@ -1,4 +1,4 @@
-require 'faker'
+require "faker"
 
 FactoryBot.define do
   factory :customer do

spec/factories/invoice_items.rb

@@ -1,6 +1,10 @@
 FactoryBot.define do
   factory :invoice_item do
     quantity { rand(1..10) }
-    status { rand(0..2)}
+    unit_price {item.unit_price }
+    status { rand(0..2) }
+
+    association :item, factory: :item
+    association :invoice, factory: :invoice
   end
 end

spec/factories/invoices.rb

@@ -1,5 +1,7 @@
 FactoryBot.define do
   factory :invoice do
     status { rand(0..2) }
+
+    association :customer, factory: :customer
   end
 end

spec/factories/items.rb

@@ -1,10 +1,12 @@
-require 'faker'
+require "faker"
 
 FactoryBot.define do
   factory :item do
     name { Faker::Commerce.product_name }
     description { Faker::Commerce.material }
     unit_price { Faker::Commerce.price }
-    status { rand(0..1)}
+    status { rand(0..1) }
+
+    association :merchant, factory: :merchant
   end
 end

spec/factories/merchants.rb

@@ -1,4 +1,4 @@
-require 'faker'
+require "faker"
 
 FactoryBot.define do
   factory :merchant do

spec/factories/transactions.rb

@@ -1,9 +1,11 @@
-require 'faker'
+require "faker"
 
 FactoryBot.define do
   factory :transaction do
-    credit_card_number { Faker::Business.credit_card_number.delete('-') }
-    credit_card_expiration_date { "0#{rand(1..9)}/#{25..28}" }
-    result { rand(0..1)}
+    credit_card_number { Faker::Business.credit_card_number.delete("-") }
+    credit_card_expiration_date { "0#{rand(1..9)}/#{rand(25..28)}" }
+    result { rand(0..1) }
+
+    association :invoice, factory: :invoice
   end
 end

spec/features/merchants/invoices/index_spec.rb

@@ -0,0 +1,51 @@
+require "rails_helper"
+
+RSpec.describe "Merchant Invoices Index", type: :feature do
+  describe "When a user visits merchant's invoices index, there is information" do
+    before(:each) do
+      @merchant_1 = create(:merchant)
+      @item_1 = create(:item, merchant: @merchant_1)
+
+      @invoices_with_item = []
+      @invoices_without_item = []
+
+      3.times do
+        customer = create(:customer)
+
+        invoice_with = create(:invoice, customer: customer)
+        create(:invoice_item, item: @item_1, invoice: invoice_with)
+        @invoices_with_item << invoice_with
+
+        invoice_without = create(:invoice, customer: customer)
+        create(:invoice_item, invoice: invoice_with)
+        @invoices_without_item << invoice_without
+      end
+    end
+
+    it "They see all invoices with at least one of merchant's items" do
+      visit merchant_invoices_path(@merchant_1)
+
+      expect(page).to have_content(@merchant_1.name)
+      expect(page).to have_content("My Invoices", count: 1)
+
+      @invoices_with_item.each do |invoice|
+        expect(page).to have_content("Invoice ##{invoice.id}")
+      end
+
+      @invoices_without_item.each do |invoice|
+        expect(page).to_not have_content("Invoice ##{invoice.id}")
+      end
+    end
+
+    it "They see each invoice links to the merchant invoice show page" do
+      visit merchant_invoices_path(@merchant_1)
+
+      @invoices_with_item.each do |invoice|
+        click_link("Invoice ##{invoice.id}")
+        expect(current_path).to eq(merchant_invoice_path(@merchant_1, invoice))
+        visit merchant_invoices_path(@merchant_1)
+      end
+    end
+  end
+
+end

spec/models/invoice_spec.rb

@@ -18,4 +18,26 @@
       )
     }
   end
+
+  describe 'class methods' do
+    before(:each) do
+      @merchant_1 = create(:merchant)
+      @item_1 = create(:item, merchant: @merchant_1)
+      @customer_1 = create(:customer)
+
+      @invoice_1 = create(:invoice, customer: @customer_1)
+      create(:invoice_item, item: @item_1, invoice: @invoice_1)
+      @invoice_2 = create(:invoice, customer: @customer_1)
+      create(:invoice_item, item: @item_1, invoice: @invoice_2)
+      @invoice_3 = create(:invoice, customer: @customer_1)
+      create(:invoice_item, invoice: @invoice_3)
+    end
+
+    describe '.invoices_for_merchant' do
+      it 'returns list of invoices for a specific merchant id' do
+        expect(Invoice.invoices_for_merchant(@merchant_1.id)).to eq([@invoice_1, @invoice_2])
+      end
+    end
+  end
+
 end