Question

如何将数据字段添加到此options_for_select中的选项中？这适用于Rails 2.

我想添加类似

的内容

data-masterlocation-name="<%= location.masterlocation.inst_name %>" 

data-masterlocation-id="<%= location.masterlocation.id %>"

每个选项。我尝试过这种方法（Rails Formtastic: adding "data-" field to option tag），但它似乎对我的情况不起作用。在此先感谢您的帮助！

Maptry Helper：

module MaptryHelper

  def options_for_select(locations)
    locations.map do |location|
      [location.masterlocation.name, location_string(location.masterlocation)]
    end
  end

  def location_string(masterlocation)
    "#{masterlocation.street_address}, #{masterlocation.city}, #{masterlocation.state}, #{masterlocation.zip}"
  end

end

查看

<%= f.select :start, options_for_select(@itinerary.locations),{}, :id=>"startdrop", :name=>"startthere" %>

最终版本

辅助

module MaptryHelper

  def options_for_select(locations)
    locations.map do |l|
    content_tag "option", l.masterlocation.name, location_option_attributes(l)
    end.join("\n")
  end

  private

  def location_option_attributes(location)
    {
    :value => "#{location.masterlocation.street_address}, #{location.masterlocation.city}, #{location.masterlocation.state}, #{location.masterlocation.zip}",
    :id => location.masterlocation.id,  
    :"data-masterlocation-name" => location.masterlocation.name,
    :"data-masterlocation-id" => location.masterlocation.id
    }
  end
end

查看

<%= f.select :start, options_for_select(@itinerary.locations), {}, {:id=>"startdrop", :name=>"startthere"} %>

Answer 1

使用此方法无法执行此操作。但是，您可以这样写：

<%= f.select :start, location_options(@itinerary),{}, :id=>"startdrop", :name=>"startthere" %>

在你的帮手中：

def location_options(itinerary)
  itinerary.locations.map do |l|
    content_tag "option", l.name, location_option_attributes(l)
  end.join("\n")
end

private

def location_option_attributes(location)
  {
    :id => location.id,  
    :"data-masterlocation-name" => location.masterlocation.inst_name,
    :"data-masterlocation-id" => location.masterlocation.id
  }
end

如何在Rails中为options_for_select的选项添加数据字段？

1 个答案: