[英]error in ruby on rails controller class
I am getting this sort of error, earlier it wored properly but some how it is the error. 我遇到了这种错误,早先它可以正常解决,但是有些错误是怎么回事。
undefined method `save' for 2:Fixnum
And this my code in line_item_controller.rb/create 这是我在line_item_controller.rb / create中的代码
def create
@cart = current_cart
product = Product.find(params[:product_id])
@line_item = @cart.add_product(product.id)
respond_to do |format|
if @line_item.save
format.html { redirect_to store_url}
format.js { @current_item = @line_item }
format.json { render :json => @line_item, :status => :created, :location => @line_item }
else
format.html { render :action => "new" }
format.json { render :json => @line_item.errors, :status => :unprocessable_entity }
end
end
end
please help! 请帮忙!
@cart.add_product
seems return a number ( Fixnum
) instead of a model object, as you expect. @cart.add_product
似乎返回数字( Fixnum
)而不是您期望的模型对象。 If you don't know how to fix that, show us implementation of add_product
. 如果您不知道如何解决该问题,请向我们展示
add_product
实现。
It looks like your add_product
method is returning an integer instead of the product you're expecting. 看来您的
add_product
方法正在返回一个整数,而不是您期望的乘积。
This means the @line_item.save
is evaluating to <some number>.save
, which is why you're getting the error. 这意味着
@line_item.save
评估为<some number>.save
,这就是为什么会出现错误的原因。
Check add_product
and make sure it returns the object instead of the id. 检查
add_product
并确保它返回对象而不是id。
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