Ruby on rails 如何将数据字段添加到Rails中选项的选项中?
如何将数据字段添加到此选项中的选项?这是针对Rails 2的 我想补充一下Ruby on rails 如何将数据字段添加到Rails中选项的选项中?,ruby-on-rails,rails-activerecord,form-helpers,Ruby On Rails,Rails Activerecord,Form Helpers,如何将数据字段添加到此选项中的选项?这是针对Rails 2的 我想补充一下 data-masterlocation-name="<%= location.masterlocation.inst_name %>" data-masterlocation-id="<%= location.masterlocation.id %>" 看法 看法 “startdrop”,:name=>“startthere”}%> 使用此方法无法执行此操作。但是,你可以这样写: <%
data-masterlocation-name="<%= location.masterlocation.inst_name %>"
data-masterlocation-id="<%= location.masterlocation.id %>"
看法
看法
“startdrop”,:name=>“startthere”}%>
使用此方法无法执行此操作。但是,你可以这样写:
<%= f.select :start, location_options(@itinerary),{}, :id=>"startdrop", :name=>"startthere" %>
谢谢你的评论!不幸的是,这引发了一个错误:
maptry\u helper.rb:3:形式参数不能是实例变量def location\u options(@internative)^。
另外,在您的回答中,我将要创建的值放在哪里:“#{masterlocation.street\u address},#{masterlocation.city},#{masterlocation.state},#{masterlocation.zip}”
?我能够调整代码使其为我工作(基于上面的代码!)感谢您的帮助。我有几个相关的问题,所以非常感谢你提供的任何其他建议。事实上,这是不正确的。你可以。请看这里:
<%= f.select :start, options_for_select(@itinerary.locations),{}, :id=>"startdrop", :name=>"startthere" %>
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
<%= f.select :start, options_for_select(@itinerary.locations), {}, {:id=>"startdrop", :name=>"startthere"} %>
<%= f.select :start, location_options(@itinerary),{}, :id=>"startdrop", :name=>"startthere" %>
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