將變量從控制器傳遞到模型

Question

我需要將我的控制器方法中設置的關鍵變量傳遞給方法關鍵字中的模型。

uploadscontroller.rb

def create 
    @upload = Upload.new(upload_params) 
    @upload.upload_file = params[:file] 
    @upload.emission_id = params[:id] 
    key = Emission.find(params[:id]).key 
end 

upload.rb

UPDATE

我需要使用從控制器self.path路線的關鍵

class Upload < ActiveRecord::Base 
    require 'action_view' 
    include ActionView::Helpers::NumberHelper 
    belongs_to :emission 
    attr_accessor :upload_file 
    before_save :upload_file 
    def key=(val) 
    @variable = val 
end 

def upload_file=(imcoming_file) 

    #en caso de que vengan mas de uno 
    imcoming_file.each do |key, value| 
     self.name = value.original_filename 
     self.tipe = value.content_type 
     @data = value.read 
     self.path = 'uploads/' + @variable + self.name 
     self.md5 = Digest::MD5.hexdigest(@data) 
     numer = @data.size 
     self.size= number_to_human_size(numer) 
     self.time_to_air = "10" 

     #Mueve el archivo al directorio 
     File.open(Rails.root.join('public', 'uploads', self.name), 'wb') do |file| 
      file.write(@data) 


     end 
    end 

末

Answer 1

從控制器：

@upload.key = key