Add stock_article_selection (deleting multiple stock articles at once)

app/controllers/stockit_controller.rb

@@ -3,6 +3,7 @@ class StockitController < ApplicationController
   def index
     @stock_articles = StockArticle.includes(:supplier, :article_category).
         order('suppliers.name, article_categories.name, articles.name')
+    @stock_article_selection = StockArticleSelection.new
   end
 
   def new

app/controllers/stockit_selections_controller.rb

@@ -0,0 +1,56 @@
+# encoding: utf-8
+class StockitSelectionsController < ApplicationController
+  
+  def index
+    @stock_article_selections = StockArticleSelection.all
+  end
+
+  def show
+    @stock_article_selection = StockArticleSelection.find(params[:id])
+  end
+
+  def create
+    @stock_article_selection = StockArticleSelection.new(params[:stock_article_selection])
+    @stock_article_selection.created_by = current_user
+
+    if @stock_article_selection.save
+      redirect_to(@stock_article_selection, :notice => 'Löschvorschlag für gewählte Artikel wurde erstellt.')
+    else
+      @stock_articles = StockArticle.includes(:supplier, :article_category).
+          order('suppliers.name, article_categories.name, articles.name')
+      render 'stockit/index'
+    end
+  end
+
+  def destroy # destroy (open or finished) selection without deleting articles
+    stock_article_selection = StockArticleSelection.find(params[:id])
+    stock_article_selection.destroy
+    
+    redirect_to stock_article_selections_path, :notice => 'Löschvorschlag wurde verworfen.'
+  end
+
+  def articles # destroy articles, finish selection
+    stock_article_selection = StockArticleSelection.find(params[:id])
+    
+    destroyed_articles_count = 0
+    failed_articles_count = 0
+    stock_article_selection.stock_articles.each do |article|
+      begin
+        article.destroy # article.delete would save some effort, but validations are important
+        destroyed_articles_count += 1
+      rescue => error # recover if article.destroy fails and continue with next article
+        failed_articles_count += 1
+      end
+    end
+    
+    if destroyed_articles_count>0 # note that 1 successful article.destroy is enough to destroy selection
+      stock_article_selection.destroy
+      flash[:notice] = "#{destroyed_articles_count} gewählte Artikel sind nun gelöscht."
+      flash[:error] = "#{failed_articles_count} Artikel konnten nicht gelöscht werden." unless 0==failed_articles_count
+    else
+      flash[:error] = "Löschvorgang fehlgeschlagen. Es wurden keine Artikel gelöscht."
+    end
+    
+    redirect_to stock_articles_path
+  end
+end