Rails选择标签

Question

我想用选择标签显示性别模型。在这里我的模型

Customer  Gender 
ID    Id 
First   Customer_id 
Last   description 
Email 
Password 

Customer 
    has_one :gender 
Gender 
    belongs_to :customer 

这里我选择标记的ATM

<%= collection_select(:gender, :id, Gender.all, :id, :description) %> 

但它显示我下面的错误，而不是

NoMethodError in Customers#edit 

Showing /home/jean/rail/map/app/views/customers/_general.html.erb where line #23 raised: 

undefined method `id' for []:Array 
Extracted source (around line #23): 

20:  
21:  <%= #collection_select(:gender, :description, @genders, :id, :description) 
22:  %> 
23:  <%= collection_select(:gender, :id, Gender.all, :id, :description) %> 
24: 
25:  <div class="customer_edit_name"> 
26:    <%= f.label "Birthday" %> 

Answer 1

我希望你尝试添加性别的复选框中客户表单。如果是的话，应该是作为

collection_select（：客户：gender_id，Gen​​der.all，：ID， ：描述）