幫手colllection_select，參數的錯誤數量（給定7，預期的4..6）

Question

在collection_select中，我需要傳遞以下參數。總計7，但方法接受最大6，我如何加入？使用此語法

<%= f.select :skill_list, options_from_collection_for_select(Project.tag_counts_on(:skills).order(:name), "id", "name"), {},:multiple=> true,:validate=> true,:class=> 'form-control' %> 

Answer 1

嘗試到collection_select是錯誤的。

collection_select（對象，方法，收集，value_method， text_method，選項= {}，html_options = {}

multiple: true和validate :true應到位的options = {}和class: 'form-control'應該進入html_options = {} 。下面應該工作

<%= f.collection_select :skill_list, Project.tag_counts_on(:skills).order(:name), :id, :name, {multiple: true, validate: true}, class: 'form-control' %> 

Answer 2

錯誤的參數數目（7給出，預計4..6）

的問題是要傳遞參數的方式

<%= f.collection_select :skill_list, Project.tag_counts_on(:skills).order(:name), :id, :name, {}, {multiple: true}, validate: true, class: 'form-control' %>