Class: Fileupload

Inherits:
Object
  • Object
show all
Defined in:
lib/fileupload.rb

Instance Method Summary collapse

Constructor Details

#initialize(filepath = "", min = 1, max = 4000) ⇒ Fileupload

Returns a new instance of Fileupload.



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# File 'lib/fileupload.rb', line 2

def initialize(filepath="",min=1,max=4000)
  @filepath=filepath
  @message=""
  @minsize =min*1024
  @maxsize=max*1024
end

Instance Method Details

#getname(filestream) ⇒ Object

保证名称不重复



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# File 'lib/fileupload.rb', line 39

def getname(filestream)
  img_for = filestream[filestream.length-4, 4]
  filename = Time.now.strftime("%Y%m%d%h%m%s")<<rand(99999).to_s<<img_for
  file = @filepath+filename
  while File.exist?(file) do
    filename = Time.now.strftime("%Y%m%d%h%m%s")<<rand(99999).to_s<<img_for
    file = @filepath+filename
  end
  filename
end

#img_validata(file) ⇒ Object

大小限制，类型限制，都放进模型层中。



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# File 'lib/fileupload.rb', line 20

def img_validata(file)
  img_for = /\.(f4v|mp4|mp3)+$/.match(file.original_filename)
  if img_for.nil? || img_for.blank?
    @message="错误：影音文件格式不对，只允许上传f4v,mp4,mp3格式！\\n"
    return false
  end
  if file.size<@minsize || file.size>@maxsize
    @message="错误：影音文件大小错误，只允许#{@minsize}kb~#{@maxsize}kb！\\n"
    return false
  end
  return true
end

#message ⇒ Object

错误提示



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# File 'lib/fileupload.rb', line 34

def message
  @message
end

#upload(file) ⇒ Object 



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# File 'lib/fileupload.rb', line 9

def upload(file)
  if self.img_validata(file)
    sname = self.getname(file.original_filename)
    File.open(@filepath+sname, "wb") do |f|
      f.write(file.read)
    end
    sname
  end
end