添加新子项时将新子项与其父项链接
我有一个 customer 模型，它有很多 events 当我转到客户展示页面时，我有指向以下人员拥有的所有 events 的链接客户。我想添加“此客户的新活动”链接。现在，我正在使用 <%= link_to "New Event for this Customer", new_event_path %> 执行此操作，但是当我点击该链接时，我必须手动输入客户的 ID 号。如何自动执行此操作，以便当我单击“为此客户添加新事件”时，rails 知道我正在为该特定客户添加新事件，而不必自己输入 customer_id？
I have a customer model that has_many events When I go to the customer show page, I have links to all of the events that are owned by customer. I want to add a "New event for this customer" link. Right now, I'm doing that with <%= link_to "New Event for this Customer", new_event_path %> but when I follow that link, I have to manually enter in the customer's id number. How can I automate this so that when I click "Add new event for this customer" rails knows that I'm adding a new event for that particular customer instead of having to put in the customer_id myself?
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您正在寻找的内容称为
嵌套资源，这是一个很好的介绍。对于这种特定情况，您应该像这样声明您的路由：
上述声明将允许您定义如下路由：
在您的特定情况下：
What you are looking for is called
nested resources, here's a good introduction.For this specific case you should declare your routes like these:
The above declaration would allow you to define routes like:
And in your specific case:
将客户 ID 作为参数添加到链接
<%= link_to "New Event for this Customer", new_event_path, {:cust_id => customer.id} %>并在表单中将其设置为事件对象的隐藏参数。您的模型将自动填充客户 ID。Add the customer id to the link as parameter
<%= link_to "New Event for this Customer", new_event_path, {:cust_id => customer.id} %>and in the form, set this as a hidden param for event object. Your model will automatically be populated with the customer id.