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我正在使用Sinatra写Shop。我实现了添加到购物篮,但我无法从购物篮删除工作。Ruby,Sinatra DELETE方法
我的类应用:
get "/basket" do #working
products_in_basket = FetchBasket.new.call
erb :"basket/show", locals: { basket: products_in_basket }
end
post "/basket" do #working
AddToBasket.new(params).call
redirect "/"
end
delete "basket/:id" do # doesn't work
DeleteBasket.new(params).call
redirect "/"
end
我DeleteBasket:
module Shop
class DeleteBasket
attr_reader :product_id, :id
def initialize(params)
@id = params.fetch("id").to_i
@product_id = params.fetch("product_id").to_i
end
def call
basket = FetchBaskets(id) # finds Basket instance with given id
return unless basket
reduce_basket_quantity(basket)
def reduce_basket_quantity(basket)
if basket.quantity >= 1
basket.quantity -= 1
#warehouse = FetchWarehouseProduct.new.call(product_id)
#warehouse.quantity += quantity
else
BASKET.delete(basket)
end
end
end
end
end
删除观点:
<td> <form action="/basket/<%=b.id%>" method="post">
<input type="hidden" name="_method" value="delete">
<input type="hidden" name="product_id" value=<%= b.product_id %>>
<input type="hidden" name="id" value=<%= b.id %>>
<button type="submit">Delete</button>
</form>
,因为它应该它不重定向到主页,它不会改变篮子数量1.它根本不做任何事情。
? –
类应该是名词,方法应该是动词处理所说的名词。有一个名为'DeleteBasket'的类没有意义。另外,什么是不工作?你的'DeleteBasket'类在语法上甚至是不正确的。 –
什么是语法错误? – Jes