fix price bug for products

app/models/order.rb

@@ -27,7 +27,7 @@ class Order < ActiveRecord::Base
   accepts_nested_attributes_for :order_products, reject_if: proc { |op| op[:count].to_i <= 0 }
 
   def price
-    self.order_products.map{ |op| op.count * op.product.price }.sum
+    self.order_products.map{ |op| op.count * op.product.price_cents }.sum
   end
 
   def to_sentence

app/models/product.rb

@@ -4,7 +4,7 @@
 #
 #  id                  :integer          not null, primary key
 #  name                :string(255)
-#  price               :integer
+#  price_cents         :integer
 #  created_at          :datetime
 #  updated_at          :datetime
 #  avatar_file_name    :string(255)
@@ -22,17 +22,17 @@ class Product < ActiveRecord::Base
   enum category: %w(food beverages other)
 
   validates :name, presence: true
-  validates :price, numericality: { only_integer: true, greater_than_or_equal_to: 0 }
+  validates :price_cents, numericality: { only_integer: true, greater_than_or_equal_to: 0 }
   validates :stock, numericality: { only_integer: true, greater_than_or_equal_to: 0 }
   validates_attachment :avatar, presence: true, content_type: { content_type: ["image/jpeg", "image/gif", "image/png"] }
 
   def price
-    (read_attribute(:price) || 0) / 100.0
+    (price_cents || 0) / 100.0
   end
 
   def price=(value)
     if value.is_a? String then value.sub!(',', '.') end
-    write_attribute(:price, (value.to_f * 100).to_int)
+    self.price_cents = (value.to_f * 100).to_int
   end
 
 end

app/views/order_products/_order_product.html.erb

@@ -11,7 +11,7 @@
             <%= render 'btn_inc' %>
 
             <%= f.fields_for :product do |product| %>
-              <%= product.hidden_field :price, class: :price %>
+              <%= product.hidden_field :price_cents, class: :price %>
               <%= product.hidden_field :stock, class: :stock %>
             <% end %>
           </div>

db/migrate/20150204155216_change_price_to_price_cents.rb

@@ -0,0 +1,5 @@
+class ChangePriceToPriceCents < ActiveRecord::Migration
+  def change
+    rename_column :products, :price, :price_cents
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20150113155744) do
+ActiveRecord::Schema.define(version: 20150204155216) do
 
   create_table "order_products", force: true do |t|
     t.integer "order_id"
@@ -31,7 +31,7 @@ ActiveRecord::Schema.define(version: 20150113155744) do
 
   create_table "products", force: true do |t|
     t.string   "name"
-    t.integer  "price"
+    t.integer  "price_cents"
     t.datetime "created_at"
     t.datetime "updated_at"
     t.string   "avatar_file_name"

test/fixtures/products.yml

@@ -4,7 +4,7 @@
 #
 #  id                  :integer          not null, primary key
 #  name                :string(255)
-#  price               :integer
+#  price_cents         :integer
 #  created_at          :datetime
 #  updated_at          :datetime
 #  avatar_file_name    :string(255)

test/models/product_test.rb

@@ -4,7 +4,7 @@
 #
 #  id                  :integer          not null, primary key
 #  name                :string(255)
-#  price               :integer
+#  price_cents         :integer
 #  created_at          :datetime
 #  updated_at          :datetime
 #  avatar_file_name    :string(255)