Add product category importer

app/controllers/suppliers/product_categories_controller.rb

@@ -9,6 +9,22 @@ module Suppliers
       respond_to do |format|
         format.html # index.html.erb
         format.json { render json: @product_categories }
+        format.yaml do
+          @product_categories.include_relation(:products)
+          h = {product_categories: []}
+          @product_categories.each do |product_category|
+            h[:product_categories] << {
+              name: product_category.name,
+              products: product_category.products.map{|product| {
+                name: product.name,
+                price: product.price,
+                code: product.code,
+                description: product.description
+              }}
+            }
+          end
+          render text: h.deep_stringify_keys.to_yaml
+        end
       end
     end
 
@@ -39,6 +55,18 @@ module Suppliers
       @product_category = ProductCategory.find(params[:id])
     end
 
+    def import
+      redirect_to({action: :index}, alert: 'no_file_given') and return unless params[:file].present?
+      result = ProductCategoriesImporter.new(current_supplier).import(params[:file].read)
+      if result.errors.any?
+        redirect_to({action: :index}, alert: result.errors.message)
+      else
+        redirect_to action: :index
+      end
+    rescue => e
+      redirect_to({action: :index}, alert: 'something went wrong')
+    end
+
     # POST /product_categories
     # POST /product_categories.json
     def create