Rails 4:f.select返回的字符串不是整数 [英] Rails 4: f.select returns string not integer

问题描述

我有用于用户注册的表格.用户必须通过选择选项来选择他的国家.当我提交表单时，我得到预期的错误国家(#70309119520500)，得到了字符串(#8039220) 请帮助我如何将字符串转换为整数，以便我可以在数据库中插入记录.

I have form for user registration. User has to select his country via select options. When i submit form i get error Country(#70309119520500) expected, got String(#8039220) Help me please how to convert string to integer so i can insert record in database.

ruby -v: ruby 2.1.5p273 (2014-11-13 revision 48405) [x86_64-linux]
rails -v: Rails 4.1.8

这是我的html.rb表单

This is my html.rb form

<%= form_for :user, url: users_path do |f| %>
    <div class="field">
      <%= f.label :countries %>
      <% options = options_from_collection_for_select(Country.all, 'id', 'country', 1) %>
      <%=  f.select :country,  options %>
    </div>
<% end %>

这是请求

    Parameters:

{"utf8"=>"✓",
 "authenticity_token"=>"34/KncZpwhEDYRZuWe09nKmF7DG7+lEu0IBxe9YbKnE=",
 "user"=>{"firm"=>"Chillum doo",
 "name"=>"myname",
 "last_name"=>"mylastname",
 "address"=>"myAdress",
 "post_number"=>"0000",
 "city"=>"myCity",
 "country"=>"1",
 "telephone"=>"000000000",
 "mobile_phone"=>"000000000",
 "user_name"=>"myUserName",
 "email"=>"[e-mail]",
 "password"=>"[FILTERED]",
 "password_confirmation"=>"[FILTERED]"},
 "commit"=>"Create Account"}

用户控制器

class UsersController < ApplicationController


  def new
    @user = User.new
  end

  def create
    @user = User.new(user_params)
    if @user.save!
      redirect_to '/', notice: 'User registered successfully'
    else
      render 'new'
    end
  end

  private
  def user_params
    params.require(:user).permit(:firm, :name, :last_name, :address, :post_number,
                                 :city, :country, :telephone, :mobile_phone, :user_name,
                                 :email, :password, :password_confirmation)
  end

end

推荐答案

假设您的用户模型belongs_to :country，您将希望表单提交country_id，而不是country.尝试类似的东西:

Presuming that your User model belongs_to :country, you'll want your form to submit the country_id, not the country. Try something like:

<%=  f.select :country_id,  options %>

您还需要在控制器中允许country_id作为属性.

You'll need to permit country_id as an attribute in your controller too.

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