Add FinancialLinksController#incomplete

app/controllers/finance/financial_links_controller.rb

@@ -1,5 +1,5 @@
 class Finance::FinancialLinksController < Finance::BaseController
-  before_action :find_financial_link, except: [:create]
+  before_action :find_financial_link, except: [:create, :incomplete]
 
   def show
     @items = @financial_link.bank_transactions.map do |bt|
@@ -44,6 +44,10 @@ class Finance::FinancialLinksController < Finance::BaseController
     redirect_to finance_link_url(@financial_link), notice: t('.notice')
   end
 
+  def incomplete
+    @financial_links = FinancialLink.incomplete
+  end
+
   def index_bank_transaction
     @bank_transactions = BankTransaction.without_financial_link
   end

app/models/financial_link.rb

@@ -2,4 +2,29 @@ class FinancialLink < ApplicationRecord
   has_many :bank_transactions
   has_many :financial_transactions
   has_many :invoices
+
+  scope :incomplete, -> { with_full_sum.where.not('full_sums.full_sum' => 0) }
+  scope :with_full_sum, -> {
+    select(:id, :note, :full_sum).joins(<<-SQL)
+      LEFT JOIN (
+        SELECT id, COALESCE(bt_sum, 0) - COALESCE(ft_sum, 0) + COALESCE(i_sum, 0) AS full_sum
+        FROM financial_links fl
+        LEFT JOIN (
+          SELECT financial_link_id, SUM(amount) AS bt_sum
+          FROM bank_transactions
+          GROUP BY financial_link_id
+        ) bt ON bt.financial_link_id = fl.id
+        LEFT JOIN (
+          SELECT financial_link_id, SUM(amount) AS ft_sum
+          FROM financial_transactions
+          GROUP BY financial_link_id
+        ) ft ON ft.financial_link_id = fl.id
+        LEFT JOIN (
+          SELECT financial_link_id, SUM(amount) AS i_sum
+          FROM invoices
+          GROUP BY financial_link_id
+        ) i ON i.financial_link_id = fl.id
+      ) full_sums ON full_sums.id = financial_links.id
+    SQL
+  }
 end

app/views/finance/financial_links/incomplete.html.haml

@@ -0,0 +1,14 @@
+- title t('.title')
+
+%table.table.table-striped
+  %thead
+    %tr
+      %th= heading_helper FinancialLink, :id
+      %th= heading_helper FinancialLink, :note
+      %th= heading_helper FinancialTransaction, :amount
+  %tbody
+    - for fl in @financial_links
+      %tr
+        %td= link_to fl.id, finance_link_path(fl)
+        %td= fl.note
+        %td= format_currency fl.full_sum

config/routes.rb

@@ -173,6 +173,9 @@ Foodsoft::Application.routes.draw do
       end
 
       resources :links, controller: 'financial_links', only: [:create, :show] do
+        collection do
+          get :incomplete
+        end
         member do
           get :index_bank_transaction
           put 'bank_transactions/:bank_transaction', action: 'add_bank_transaction', as: 'add_bank_transaction'