通过link_to在ruby上传递参数 [英] pass parameter by link_to ruby on rails

问题描述

我有这行代码:

<%= link_to "Add to cart", :controller => "car", :action => "add_to_cart", :car => car %>

当我在add_to_cart方法中...我该如何呼叫:car?

when im in the add_to_cart method...how can i call the :car please?

@car = Car.new(params[:car])

那是行不通的，因为它说我正在尝试将其字符串化.

That doesn't work because it says that I'm trying to stringify it.

我不明白这是怎么回事；因为我用它来创建新用户，而且效果很好.

I don't understand what's wrong; because I used this to create new users and it worked fine.

顺便说一句，汽车是我的汽车对象.

By the way, car is my car object.

推荐答案

尝试:

<%= link_to "Add to cart", {:controller => "car", :action => "add_to_cart", :car => car.id }%>

然后在您的控制器中

@car = Car.find(params[:car])

在数据库中的汽车"表中(与铁路复数形式一样)会找到ID ==到car.id的汽车

which, will find in your 'cars' table (as with rails pluralization) in your DB a car with id == to car.id

希望有帮助！快乐的编码

hope it helps! happy coding

一年多以后，但是如果您看到它或任何人看到，我都可以使用; D

more than a year later, but if you see it or anyone does, i could use the points ;D

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