小编Atu*_*tul的帖子

忍不住尝试重新启动的RailsForum并在此处交叉发布此问题。

我有以下表单对象（在 Rails 4 中）

class StationForm
    include Virtus

    include ActiveModel::Model
    # I think this is unnecessary
    #   extend ActiveModel::Naming
    #   include ActiveModel::Conversion
    #   include ActiveModel::Validations


# Station
    attr_reader :station

    attribute :station_name, String
    attribute :station_description, String

# Address
    attr_reader :address

    attribute :address_url, String
    attribute :address_priority, Integer
    attribute :address_is_active, Boolean

    def persisted?
        false
    end

    def save
        if valid?
            persist
            true
        else
            false
        end
    end

private

    def persist
        @station = Station.create(name: station_name, description: station_description)
        @address = …

我有一个简单的应用程序上传我在博客数据库中使用carrierwave保存的图片.(有标题,正文和图像),我的证书工作正常.

我使用此网址在s3帐户中上传了一张图片:/s3.amazonaws.com/Buket_name/..path../thumb_smile.png

如何使用heroku rails控制台中的映像更新数据库.这似乎不起作用:

b = Blog.new
b.title = "a blog"
b.body = "some text"
b.image =  File.new("s3.amazonaws.com/Buket_name/..path../thumb_smile.png","a")
or
b.image =  File.open("s3.amazonaws.com/Buket_name/..path../thumb_smile.png","r")

Errno::ENOENT: No such file or directory - 
s3.amazonaws.com/Buket_name/..path../thumb_smile.png