Ruby on Rails collection_select显示属性

I'm new to Rails and am working with the collection_select method.

我是Rails的新手，正在使用collection_select方法。

I have two fields I'd like to display in my select box:

我有两个要在选择框中显示的字段：

first_name and last_name

first_name和last_name

So far, I can only display one or the other, not both.

到目前为止，我只能显示一个或另一个，而不是两者。

Here's the code I'm working with:

这是我正在使用的代码：

collection_select(:hour,:shopper_id,@shoppers,:id,"last_name")

Thank you.

谢谢。

1 个解决方案

#1

Add full_name method to shopper model:

将full_name方法添加到购物者模型：

class Shopper < ActiveRecord::Base
  #.....
  # add this
  def full_name
    "#{first_name} #{last_name}"
  end
end

And modify the collection_select statement:

并修改collection_select语句：

collection_select(:hour,:shopper_id,@shoppers,:id,:full_name)

This is because most of Rails helpers takes methods names as params, so does collection_select, which takes a text_method param, which is the name of the method to be called to generate the text of the option itself, thus we define full_name method and we pass it's name to collection_select.

这是因为大多数Rails助手都将方法名称作为参数，collection_select也是如此，它采用text_method参数，这是要调用的方法的名称，用于生成选项本身的文本，因此我们定义了full_name方法，我们通过了它是collection_select的名字。

#1