Add download for articles

app/controllers/articles_controller.rb

@@ -21,6 +21,12 @@ class ArticlesController < ApplicationController
     end
 
     @articles = Article.undeleted.where(supplier_id: @supplier, :type => nil).includes(:article_category).order(sort)
+
+    if request.format.csv?
+      send_data ArticlesCsv.new(@articles, encoding: 'utf-8').to_csv, filename: 'articles.csv', type: 'text/csv'
+      return
+    end
+
     @articles = @articles.where('articles.name LIKE ?', "%#{params[:query]}%") unless params[:query].nil?
 
     @articles = @articles.page(params[:page]).per(@per_page)

app/views/articles/index.html.haml

@@ -26,6 +26,7 @@
       = link_to t('.new'), new_supplier_article_path(@supplier), remote: true, class: "btn #{'btn-primary' unless @supplier.shared_supplier}"
       = link_to t('.edit_all'), edit_all_supplier_articles_path(@supplier), class: 'btn'
       = link_to t('.upload'), upload_supplier_articles_path(@supplier), class: 'btn'
+      = link_to t('.download'), supplier_articles_path(@supplier, format: :csv), class: 'btn'
       - if current_user.role_orders?
         = link_to t('.new_order'), new_order_path(supplier_id: @supplier), class: 'btn'
 

config/locales/de.yml

@@ -455,6 +455,7 @@ de:
       not_found: Keine Artikel gefunden
     index:
       change_supplier: Lieferant wechseln ...
+      download: Artikel herunterladen
       edit_all: Alle bearbeiten
       ext_db:
         import: Suchen/Importieren

config/locales/en.yml

@@ -474,6 +474,7 @@ en:
       not_found: No articles found
     index:
       change_supplier: Change supplier ...
+      download: Download articles
       edit_all: Edit all
       ext_db:
         import: Import article

lib/articles_csv.rb

@@ -0,0 +1,43 @@
+class ArticlesCsv < RenderCSV
+  include ApplicationHelper
+
+  def header
+    [
+      '',
+      Article.human_attribute_name(:order_number),
+      Article.human_attribute_name(:name),
+      Article.human_attribute_name(:note),
+      Article.human_attribute_name(:manufacturer),
+      Article.human_attribute_name(:origin),
+      Article.human_attribute_name(:unit),
+      Article.human_attribute_name(:price),
+      Article.human_attribute_name(:tax),
+      Article.human_attribute_name(:deposit),
+      Article.human_attribute_name(:unit_quantity),
+      '',
+      '',
+      Article.human_attribute_name(:article_category),
+    ]
+  end
+
+  def data
+    @object.each do |o|
+      yield [
+        '',
+        o.order_number,
+        o.name,
+        o.note,
+        o.manufacturer,
+        o.origin,
+        o.unit,
+        o.price,
+        o.tax,
+        o.deposit,
+        o.unit_quantity,
+        '',
+        '',
+        o.article_category.try(:name),
+      ]
+    end
+  end
+end