RoR - collection_select from array [英] RoR - collection_select from array

问题描述

我有一个数组：

@dates= ['2013-11-01', '2013-11-02', '2013-11-03', '2013-11-04', '2013-11-05']

我如何把这些数组在视图中的collection_select？我尝试了：

how can i put these array in an collection_select in the view? I tried:

...    
<%= f.collection_select :day, Day.order(:date), :id, @dates, include_blank: false %>
...

推荐答案

对选择的值（从表单返回）和文本（在下拉列表中显示）使用日期字符串，然后

Assuming that you mean to use the date strings for both the value (returned from form) and text (displayed in drop-down) of the select then

= f.collection_select :day, @dates, :to_s, :to_s, include_blank: false

将传递：to_s到@dates集合的每个元素，并使用选择的文本（param 3）和值（param 4）的结果。

This will pass :to_s to each element of the the @dates collection and use the results for the text (param 3) and value (param 4) of the select.

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