Class: ShoppingCartSession::Cart

Inherits:
Object
  • Object
show all
Defined in:
lib/shopping_cart_session.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(session) ⇒ Cart

Returns a new instance of Cart.



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# File 'lib/shopping_cart_session.rb', line 8

def initialize(session)
  @session = session
  @items = session.key?(:cart_items) ? deserialize_json_objects(session[:cart_items]) : []
  @items = @items.map { |item|
    item["amount"] = item["amount"].to_i
    item["price"] = item["price"].to_f
    item
  }
  @total_price = @items.reduce(0) { |sum, item| sum + item["price"].to_f * item["amount"] }
end

Instance Attribute Details

#items ⇒ Object (readonly)

Returns the value of attribute items.



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# File 'lib/shopping_cart_session.rb', line 58

def items
  @items
end

#total_price ⇒ Object (readonly)

Returns the value of attribute total_price.



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# File 'lib/shopping_cart_session.rb', line 58

def total_price
  @total_price
end

Instance Method Details

#add(product, amount = 1) ⇒ Object 



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# File 'lib/shopping_cart_session.rb', line 19

def add(product, amount = 1)
  @total_price += product["price"].to_f

  products = @items.select { |p| p["id"].to_s == product.id.to_s }

  if products.length > 0 then
    products.first["amount"] += 1
  else
    @items.push({
      :id => product.id,
      :name => product.name,
      :price => product.price,
      :amount => amount
    })
  end

  update_session
end

#empty ⇒ Object 



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# File 'lib/shopping_cart_session.rb', line 38

def empty
  @session[:cart_items] = ""
  @items = []
  @total_price = 0
end

#remove(product) ⇒ Object 



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# File 'lib/shopping_cart_session.rb', line 44

def remove(product)
  @total_price -= product["price"].to_f

  item = find_item(product)

  if item and item["amount"].to_i > 1 then
    item["amount"] -= 1
  else
    @items = @items.reject { |item| item["id"].to_s == product["id"].to_s }
  end

  update_session
end