使用多個表格的導軌形式

Question

我想創建一個表格來更新表格。我想要一個下拉按鈕來從一個名爲「製造商」的表中提取信息，並且一旦表單被提交，就將數據存儲在「評論」表中。

這是我的形式：

<%= form_for(@review) do |f| %> 
    <%= render 'shared/error_messages', object: f.object %> 
    <div class="field" align= "center"> 
    <h3>Select bat</h3> 
    <%= f.collection_select :bat_id, Manufacturer, include_blank: true %> 
    <h3>What do you like about this bat?</h3> 
    <%= f.text_area :pros, placeholder: "Enter what you like..." %> 
    <h3>What do you not like about this bat?</h3> 
    <%= f.text_area :cons, placeholder: "Enter what you don't like..." %></br> 
    </div> 
    <div align="center"> 
    <%= f.submit "Add Review", class: "btn btn-large btn-info" %> 
    </div> 
<% end %> 

當你看到這LINE-<%= f.collection_select :bat_id, Manufacturer, include_blank: true %>我相信：BAT_ID告知的形式，其中從用戶發送輸入。 （在本例中爲複查表中的：bat_id參數）

如何將表單從製造商表格中選擇下拉選項？

更新： 我需要在控制器中添加任何東西嗎？

Answer 1

查看文檔http://api.rubyonrails.org/classes/ActionView/Helpers/FormBuilder.html#method-i-collection_select

collection_select(method, collection, value_method, text_method, options = {}, html_options = {}) 
# method: the field in your form's object 
# collection: the collection of active records to display as options 
# value_method: which method call in items of the collection to get the displayed value 
# text_method: which method call in items of the collection to get the id value 

所以你的情況：

<%= f.collection_select :bat_id, Manufacturer.all, :id, :name, include_blank: true %> 

鑑於Manufacturer模型具有name場，否則，你需要適應