如何使用简单的表单在Rails 4中创建enum属性选择

Question

我很难弄清楚如何让我的选择字段在Rails 4.2应用程序中使用Simple_form的enum属性工作。

这里是我的模型：

class Employee < ActiveRecord::Base 
    # returns the full name of the employee. This code is found in a concern called name.rb 
    include Name 

    rolify 
    # Include default devise modules. Others available are: 
    # :confirmable, :lockable, :timeoutable and :omniauthable 
    devise :database_authenticatable, :registerable, 
     :recoverable, :rememberable, :trackable, :validatable 


    enum status: [:active, :vacation, :unemployed] 

    enum os: [:mac, :windows] 

    validates :first_name, 
      presence: true, 
      length: {minimum: 2} 

    validates :last_name, 
      presence: true, 
      length: {minimum: 2} 

    validates :email, email: true, presence: true, uniqueness: true 
    validates :paypal_email, email: true, presence: true, uniqueness: true 
    # validates :status, presence: true 
    validates :skype_id, presence: true, uniqueness: true 
    validates :mobile, presence: true, numericality: true, length: {minimum: 10} 
    validates :address, :province_state, :country, :postal_code, :bachelor_degree, :os, presence: true #, , , ,, :os, presence: true 

end 

这里是我的形式：

<h2>New Employee Registration Form</h2> 

<%= simple_form_for(resource, as: resource_name, url: registration_path(resource_name)) do |f| %> 
    <%= f.error_notification %> 

    <div class="form-inputs"> 
    <%= f.input :first_name, required: true, autofocus: true %> 
    <%= f.input :last_name, required: true %> 
    <%= f.input :email, required: true%> 
    <%= f.input :password, required: true, hint: ("#{@minimum_password_length} characters minimum" if @minimum_password_length) %> 
    <%= f.input :password_confirmation, required: true %> 
    <%= f.input :paypal_email, required: true%> 
    <%= f.input :mobile, required: true %> 
    <%= f.input :skype_id, required: true %> 
    <%= f.input :address, required: true %> 
    <%= f.input :province_state, required: true %> 
    <%= f.input :country, required: true %> 
    <%= f.input :postal_code, required: true %> 
    <%= f.input :bachelor_degree, required: true %> 
    <%= f.input :os, as: :select, collection: Employee.os.keys, selected: 1, required: true %> 
    <%= f.input :status, as: :select, collection: Employee.status.keys, selected: 1, required: true %> 
    </div> 

    <div class="form-actions"> 
    <%= f.button :submit, "Register New Employee" %> 
    </div> 

这是我得到的错误：

故障/错误：<％= F。输入：状态，如：：select，collection：Employee.status.keys，selected：1，required：true％>

ActionView :: Template :: Error： 未定义的方法'状态'为＃

奇怪的是，一个类似的字段完全相同的代码只是'os'完美地工作。

欣赏任何帮助，找出为什么此属性会产生错误。

Answer 1

你可以那样做：

f.input : os, :collection => Employee.statuses.keys.to_a

您需要使用的状态plurialized版本。