ruby select/select_tag

select_tag:

 

<%= select_tag("article[type_id]", options_for_select([["请选择",nil]]+ArticleType.all.map{|t| [t.name, t.id]}, :selected=>record.type_id))%>

 

select 中的 :selected 值 要与 values里类型一致

<%= select_tag("article[type_id]", [["请选择",nil]]+ArticleType.all.map{|t| [t.name, t.id]}, :selected=>record.type_id)%>

 

或是写到help层 (更有效)

view

<%=ongoing_material_select 'material[][material_id]',f.material.id %>

 

help

 

def ongoing_provider_select name,selected,js_function=nil
    select_tag name,
               options_from_collection_for_select(Provider.ongoing_provider, "id", "name", selected),
               {:include_blank=>'None', "onchange"=>"javascript:#{js_function}"}
 end

 

select :

 

 select("post", "person_id", Person.all.collect {|p| [ p.name, p.id ] }, { :include_blank => true })

 <select name="post[person_id]">
    <option value=""></option>
    <option value="1" selected="selected">David</option>
    <option value="2">Sam</option>
    <option value="3">Tobias</option>
  </select>

 

 

 

prototype.js

 

 

 

<%= text_field_tag  'product[no]',{}, :onchange => remote_function(:update => "no_result",  
					       :method => "get",  
					       :with => "'no=' + value",  
					       :url => { :controller => :product, :action => :is_show})   
					       %>
						  <span id="no_result"></span>

 

 

<%= select :obj, :att,  @items, {}, :onchange => remote_function(:update => "sub_items",  
       :method => "get",  
       :with => "'item=' + value",  
       :url => { :controller => :home, :action => :get_sub_items})   
       %> 

 

 

<%=select_tag ( 'product[style_id]',options_for_select([["未选择",0]]+Style.find(:all).map{|t| [t.name, t.id]}), 
																:onchange => remote_function(:update => "sub_items",  
														       :method => "get",  
														       :with => "'style_id=' + value",  
														       :url => { :controller => :product, :action => :get_pic_look})   )%>

 

 

<%=link_to_remote '删除',:update=>'mpart_table',
								  :url=>{:controler=>:product,:action=>:del_row_mpart,:id=>mpart.id},
                                  :confirm=>"删除部件分同时删除部件详情？"%>