编辑表单时显示所选选项 (Rails 4) [英] Display selected option when editing a form (Rails 4)

问题描述

我想在用户编辑表单时显示我的下拉表单选择选项值.现在它显示第一个选项(在本例中为空白选项).

I want to display my dropdown form selected option value whenever an user edits the form. Right now it displays the first option (in this case a blank option).

表格

<%= f.select(:condition, options_for_select([["Brand New", "Brand New"], ["Pre-owned", "Pre-owned"]]), :include_blank => true, :selected => params[:condition]) %>

HTML 输出

<select id="product_condition" name="product[condition]">
    <option value=""></option>
    <option value="Brand New">Brand New</option>
    <option value="Pre-owned">Pre-owned</option>
</select>

JSON

{
    id: 2,
    condition: "Pre-owned",
}

谢谢.

推荐答案

<%= f.select(:condition, options_for_select([["Brand New", "Brand New"], ["Pre-owned", "Pre-owned"]], :selected => f.object.condition), :include_blank => true) %>

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