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我是一个Rails初学者,我正在开发一个预先存在的Rails 2项目。在我的应用程序,我尝试了选择下拉字段转换为form_handler f.select,但我得到这个错误:如何将此下拉菜单转换为Rails中的f.select?
undefined method `location.masterlocation.name
这里是我的尝试:
<% form_for @newsavedmap, :html=>{:id=>'createaMap'} do |f| %>
<%= f.select(:start, options_from_collection_for_select(@itinerary.locations, "location.masterlocation.street_address, location.masterlocation.city, location.masterlocation.state, location.masterlocation.zip", "location.masterlocation.name"), :id => "startdrop")%>
原来这里是下拉字段:
<select id="startdrop">
<option value="">
<% for location in @itinerary.locations %>
<option value="<%= location.masterlocation.street_address %> <%= location.masterlocation.city %>, <%= location.masterlocation.state %>, <%= location.masterlocation.zip %>"><%= location.masterlocation.name %></option>
<% end %>
</select>
在此先感谢您的帮助!
<%= f.select :start, options_for_select(@itinerary.locations.map{ |c| [c.masterlocation.name, c.masterlocation.street_address]}),{}, :id=>"startdrop", :name=>"startthere" %>
的问题是,我想包括在价值的城市,州和邮编,所有分离:
编辑1
我已经使用这个代码变得更接近由逗号。有关如何做到这一点的任何想法?
<%= f.select :start, options_for_select(@itinerary.locations.map{ |c| [c.masterlocation.inst_name, c.masterlocation.street_address AND , AND c.masterlocation.city AND , AND c.masterlocation.state AND, AND c.masterlocation.zip]}),{}, :id=>"startdrop", :name=>"startthere" %>
此作品!
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" %>
我得到这个错误'ActionView :: TemplateError(未定义的方法名称为#)'。作为背景,newsavedmap belongs_to:行程,以及行程has_many:地点。表单本身位于matry.html.erb视图中。 maptry has_many:newsavedmaps。不知道它是否重要,但我在Rails 2 –
KDP
虽然我使用了不同的解决方案,但它是基于jvnill的输入。谢谢您的帮助! – KDP