rails图片上传的一个怪异现象

在做ror开发的时候,简直感觉就是在堆砌插件,于是决定放弃各种图片上传插件,自来来写写图片上传,感觉也不是太麻烦.

(一)把上传放在一个单独类中

 

class Upload    
  def uploadFile(file)   
    if !file.original_filename.empty?   
      @filename=getFileName(file.original_filename)
      #images = MiniMagick::Image.new(@filename)
      File.new("#{RAILS_ROOT}/public/picture/#{@filename}", "wb") do |f|   
        f.write(file.read)   
      end     
    end   
  end   
  
  def getFileName(filename)   
    if !filename.nil?   
      Time.now.strftime("%Y%m%d%H%M%S") + '_' + filename   
    end   
  end        
end 
代码
def create
    @image = Image.new(params[:image])

    respond_to do |format|
      if @image.save
        Upload.new.uploadFile(params[:image][:src])
        flash[:notice] = '图片上传成功'
        format.html { redirect_to(new_admin_image_url) }
      else
        format.html { render :action => "new" }
      end
    end
  end
 

 

图片是传到服务器,可内容全部丢失了,生成了一个空白的图片.

(二)放在model中

 

def src=(src)
      if src.size>0 then
          @contents_size = src.size
          @files_type = src.content_type
          @files_data = src.read
          @name = getFileName(src.original_filename)
      end
  end

  def add_pic
      if true then
        File.open("#{RAILS_ROOT}/public/picture/#{@name}", "wb") do |f|   
          f.write(@files_data)   
        end
        #images = MiniMagick::Image.new("#{RAILS_ROOT}/public/picture/"+@name)   
        #images.resize "30x30"
        #images.write("#{RAILS_ROOT}/public/picture/output.jpg")
        #self.update_attributes(:src => self.src)
      end
  end

 

 

def create
    @image = Image.new(params[:image])

    respond_to do |format|
      if @image.save
        if params[:image][:srcc].size>0
            @image.add_pic
        end
        flash[:notice] = '图片上传成功'
        format.html { redirect_to(new_admin_image_url) }
      else
        format.html { render :action => "new" }
      end
    end
  end

 

这样生存的图片没有任何问题