Ruby 从Sinatra中的路由调用助手方法

我已经基于设置了一个简单的Sinatra应用程序。我的代码正在运行，如下所示：

# app.rb
require 'sinatra'

class MyApp < Sinatra::Application

  set :public_folder, Proc.new { File.join(root, "app/public") }
  set :views, Proc.new { File.join(root, "app/views") }

  register Sinatra::Namespace
  register Sinatra::Flash
  enable :sessions

end

require_relative 'app/helpers/init'
require_relative 'app/models/init'
require_relative 'app/routes/init'

# app/helpers/init.rb
require_relative 'image'
MyApp.helpers ImageUploader

我正在成功地调用我的

app/routes/admin.rb

文件中的

save

方法，如下所示：

# app/routes/admin.rb
class MyApp < Sinatra::Application
  ...
  imgur_url = save(params[:image])
  ...
end

---

明白了！要命名模块方法的名称空间，请将

self

放在方法名称前面。现在正在做：

# app/helpers/image.rb
require 'imgur'

module ImageUploader

  def self.save(image)
    @filename = image[:filename]
    file = image[:tempfile]
    File.open("#{ENV['PHOTO_TMP_DIR']}/#{@filename}", 'wb') do |f|
      f.write(file.read)
      upload(@filename)
    end
  end

  def self.upload(filename)
    client = Imgur.new(ENV['IMGUR_CLIENT_ID'])
    image = Imgur::LocalImage.new("#{ENV['PHOTO_TMP_DIR']}/#{@filename}")
    uploaded = client.upload(image)
    File.delete("#{ENV['PHOTO_TMP_DIR']}/#{@filename}")
    uploaded.link
  end

end

允许我调用

ImageUploader.save

，无任何错误

# app/helpers/image.rb
require 'imgur'

module ImageUploader

  def self.save(image)
    @filename = image[:filename]
    file = image[:tempfile]
    File.open("#{ENV['PHOTO_TMP_DIR']}/#{@filename}", 'wb') do |f|
      f.write(file.read)
      upload(@filename)
    end
  end

  def self.upload(filename)
    client = Imgur.new(ENV['IMGUR_CLIENT_ID'])
    image = Imgur::LocalImage.new("#{ENV['PHOTO_TMP_DIR']}/#{@filename}")
    uploaded = client.upload(image)
    File.delete("#{ENV['PHOTO_TMP_DIR']}/#{@filename}")
    uploaded.link
  end

end