Question

初学者问题我试图在行选择中添加{:include_blank => "Please select"}。

%label Please choose the language you speak
.user-profile-select
  %select{id: "user_language_language_id"}
    - Language.active.each do |lang|
      %option{value: lang.id}= lang.to_label
%input{type: "button", value: "ADD", id: "add_user_language"}

%span.note You can choose few

:coffeescript
  $("#add_user_language").click ->
    $.post #{my_user_languages_path.to_json},
      format: 'js'
      user_language:
        language_id: $("#user_language_language_id").val()

    false

我遇到haml错误或没有更改。谁能解释我做错了什么？

Answer 1

%label Please choose the language you speak
.user-profile-select
  %select{id: "user_language_language_id"}
    %option{class: "prompt"} Please Select
    - Language.active.each do |lang|
      %option{value: lang.id}= lang.to_label
  %input{type: "button", value: "ADD", id: "add_user_language"}

%span.note You can choose few

您可以提供默认＆＃34;选项＆＃34;在每个循环之前标记。您可以使用表单帮助程序方法（select），您可以在其中传递数组和提示值。

select("lang", "lang_id", Language.active.collect {|p| [ p.name, p.id ] }, {:prompt =&gt; 'Please Select'})

无法添加＆＃34;：include_blank =＆gt; ＆＃34;请选择＆＃34;＆＃34;到Rails 3.2选项选择语言（初学者）

1 个答案: