如何添加下拉菜单<选项>在轨道形式？ [英] How to add a dropdown <option> in a rails form?

问题描述

我创建了一个脚手架 -

I had created a scaffold-

rails g scaffold shipment name:string description:text from:string to:string date:string pay:string

我想要 form：string 是一个下拉菜单（加尔各答/德里/孟买为选项），而不是文本字段。我怎么做到这一点？

I want the form:string to be a drop down (with Kolkata/Delhi/Mumbai as options) and not a text field. How can I do this?

我曾经在网上搜索过，但一切都过于上层。

I had searched the web but everything was too upper level. I am new to Rails and am trying to learn this.

推荐答案

您可以在 app \views\shipments\_form.html.erb file

you can use the select helper in your app\views\shipments\_form.html.erb file

<%= form_for(@shipment) do |f| %>

    <%= f.label :from %><br>
    <%= f.select :from, [ 'Kolkata','Delhi','Mumbai' ], :prompt => 'Select One' %>

    <%= f.submit %>
<% end %>

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