ruby-on-rails - 编辑表单时显示所选选项 (Rails 4)

Question

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)。

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。

Answer 1

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