如何將數據字段添加到Rails中options_for_select的選項中？

Question

如何將數據字段添加到此options_for_select中的選項？這是Rails的2

我想喜歡

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

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

添加了一些每個選項。我嘗試遵循這種方法（Rails Formtastic: adding "data-" field to option tag），但它似乎不適合我的情況。在此先感謝您的幫助！

Maptry助手：

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" %>  

最終版本的Works

助手

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

你不能用這種方法做到這一點。但是，可以這樣寫：

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

並在您的幫助：

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